JP5171783B2 - Power equipment - Google Patents

Description

  The present invention relates to a power unit including two or more different power sources such as a heat engine and a rotating machine.

  Conventionally, what was disclosed by patent document 1, for example as this kind of power unit is known. This power unit is for driving a drive wheel of a vehicle, and includes an internal combustion engine, a first rotating machine, and a second rotating machine as a power source. This second rotating machine is a general one-rotor type.

  Moreover, said 1st rotary machine is a 2 rotor type thing, and has a stator, a 1st rotor, and a 2nd rotor. The first rotor, the second rotor, and the stator are arranged in this order from the inside in the radial direction. The first rotor has a first permanent magnet row and a second permanent magnet row that extend in the circumferential direction and are aligned in the axial direction. The stator is configured to be capable of generating a first rotating magnetic field and a second rotating magnetic field, and these first and second rotating magnetic fields rotate in the circumferential direction between the first and second magnetic pole rows, respectively. To do. Further, the second rotor has a first soft magnetic body row and a second soft magnetic body row extending in the circumferential direction and aligned in the axial direction, and the first and second soft magnetic body rows are: Opposing to the first and second magnetic pole rows, respectively. In addition, the first and second soft magnetic body rows are each composed of a plurality of first and second cores made of a soft magnetic body and arranged in the circumferential direction, and the circumferential direction of the first and second cores. Are shifted from each other by an electrical angle of π / 2.

  In the first rotating machine configured as described above, when electric power is supplied to the stator and the first and second rotating magnetic fields are generated, the magnetic poles of the first and second rotating magnetic fields and the magnetic poles of the first and second permanent magnets are used. When the first and second cores are magnetized, lines of magnetic force are generated between these elements. The electric power supplied to the stator is converted into power by the action of the magnetic force of the magnetic lines of force, and this power is output from the first and second rotors. Alternatively, power input to the first rotor and the second rotor is converted into electric power and output from the stator. The first rotor and the second rotating machine are connected to drive wheels, and the second rotor is connected to the crankshaft of the internal combustion engine.

  In the power unit configured as described above, the operations of the internal combustion engine and the first and second rotating machines are controlled, and as a result, power is transmitted to the drive wheels, thereby driving the drive wheels.

International Publication No. 08/018539 Pamphlet

  However, in the conventional power unit described above, in the first rotating machine, in order to appropriately apply the magnetic force due to the above-described magnetic field lines in order to convert the electric power supplied to the stator into motive power and output it from the first and second rotors. In addition to the first soft magnetic material row composed of a plurality of first cores, the second soft magnetic material row composed of a plurality of second cores is indispensable. As a result, it is inevitable that the first rotating machine is increased in size and manufacturing cost is increased, and as a result, the power unit is increased in size and manufacturing cost is increased. Further, the first rotating machine has, in its configuration, a difference between the rotation speeds of the first and second rotating magnetic fields and the rotation speed of the second rotor, and a difference between the rotation speed of the second rotor and the rotation speed of the first rotor. Therefore, the degree of freedom in design is low, and thus the degree of freedom in design of the power plant is low.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a power unit that can achieve downsizing and reduction in manufacturing cost and can increase design flexibility. To do.

  In order to achieve the above object, the invention according to claim 1 is a power unit 1, 1A for driving a driven part (drive wheels DW, DW in the embodiments (hereinafter, the same in this section)). In addition, the heat engine (engine 3) having an output unit (crankshaft 3a) for outputting power, the first rotating machine 11, and the supplied electric power are converted into power and output from the rotor 23, and the rotor 23, a second rotating machine 21 capable of converting the power input to electric power into electric power, and a control device (ECU 2, first PDU 41, second PDU 42, control of the operation of the heat engine, the first and second rotating machines 11, 21) The first rotating machine 11 is composed of a predetermined plurality of magnetic poles (permanent magnets 14a) arranged in the circumferential direction, and is arranged so that each two adjacent magnetic poles have different polarities. Magnetic pole array A first rotor 14 that is rotatable in the circumferential direction, and is arranged so as to face the magnetic pole array, and by generating a predetermined plurality of armature magnetic poles, a rotating magnetic field that rotates in the circumferential direction is converted into a magnetic pole array. And a stationary stator (first stator 13) having armature rows (iron cores 13a, U to W phase coils 13c to 13e) to be generated between them, and a predetermined array arranged in the circumferential direction with a space therebetween A second rotor 15 that is composed of a plurality of soft magnetic bodies (core 15a) and that has a soft magnetic body row disposed between the magnetic pole row and the armature row, and that is rotatable in the circumferential direction. The ratio between the number of child magnetic poles, the number of magnetic poles, and the number of soft magnetic bodies is set to 1: m: (1 + m) / 2 (m ≠ 1.0), and the first and second rotors 14 and 15 are set. One of the first and second rotors 14 and 15 is mechanically coupled to the output portion. The other is mechanically connected to the driven part, and the rotor 23 is mechanically connected to the driven part, and the control device transmits the driving force to the output part when starting the heat engine. The operation of at least one of the first and second rotating machines 11 and 21 is controlled so as to suppress the change in the speed of the driven part due to (step 3 in FIG. 18, step 13 in FIG. 20, step in FIG. 22) 15, step 22 in FIG. 25).

  According to the first rotating machine of this power plant, the magnetic pole row of the first rotor that is rotatable in the circumferential direction and the armature row of the stationary stator are opposed to each other, and between these magnetic pole row and the armature row. In addition, a soft magnetic body row of a second rotor that is rotatable in the circumferential direction is arranged. In addition, a plurality of magnetic poles and soft magnetic bodies that respectively constitute the magnetic pole row and the soft magnetic body row are arranged in the circumferential direction. Furthermore, the armature array of the stator can generate a rotating magnetic field rotating in the circumferential direction between the magnetic pole array by generating a plurality of predetermined armature magnetic poles. Moreover, each two adjacent magnetic poles have different polarities, and there is a space between each two adjacent soft magnetic bodies. As described above, since the rotating magnetic field is generated by the plurality of armature magnetic poles and the soft magnetic body row is arranged between the magnetic pole row and the armature row, each soft magnetic body has an armature magnetic pole and a magnetic pole. Is magnetized by. Due to this and the gap between each two adjacent soft magnetic bodies as described above, magnetic lines of force connecting the magnetic pole, the soft magnetic body, and the armature magnetic pole are generated. For this reason, when a rotating magnetic field is generated by supplying electric power to the stator, the electric power supplied to the stator is converted into power by the action of the magnetic force generated by the magnetic lines of force, and the power is output from the first rotor and the second rotor. Is done.

  Here, the torque equivalent to the electric angular velocity ωmf of the electric power and the rotating magnetic field supplied to the stator is referred to as “driving equivalent torque Te”. Hereinafter, the relationship between this driving equivalent torque Te and the torque transmitted to the first and second rotors (hereinafter referred to as “first rotor transmission torque T1” and “second rotor transmission torque T2”, respectively), the rotating magnetic field, The relationship between the electrical angular velocities of the first and second rotors will be described.

When the first rotating machine of the present invention is configured under the following conditions (A) and (B), an equivalent circuit corresponding to the first rotating machine is shown as in FIG.
(A) The stator has a three-phase coil composed of a U phase, a V phase, and a W phase. (B) Two armature magnetic poles and four magnetic poles, that is, one set of N and S poles of the armature magnetic poles. The number of pole pairs is 1, the number of pole pairs in which the N poles and S poles of the magnetic poles are one set, and the soft magnetic bodies are three soft magnetic bodies including the first core, the second core, and the third core. It is to be noted that, as described above, the “pole pair” used in this specification refers to one set of an N pole and an S pole.

ここで、ψｆは磁極の磁束の最大値、θ１およびθ２はそれぞれ、Ｕ相コイルに対する磁極の回転角度位置および第１コアの回転角度位置である。また、この場合、電機子磁極の極対数に対する磁極の極対数の比が値２．０であるため、磁極の磁束が回転磁界に対して２倍の周期で回転（変化）するので、上記の式（１）では、そのことを表すために、（θ２−θ１）に値２．０が乗算されている。 In this case, the magnetic flux Ψk1 of the magnetic pole passing through the first core of the soft magnetic material is expressed by the following equation (1).

Here, ψf is the maximum value of the magnetic flux of the magnetic pole, and θ1 and θ2 are the rotation angle position of the magnetic pole and the rotation angle position of the first core, respectively, with respect to the U-phase coil. In this case, since the ratio of the number of pole pairs of the magnetic poles to the number of pole pairs of the armature magnetic poles is 2.0, the magnetic flux of the magnetic poles rotates (changes) with a period twice that of the rotating magnetic field. In equation (1), to express this, (θ2−θ1) is multiplied by the value 2.0.

Therefore, the magnetic flux Ψu1 of the magnetic pole passing through the U-phase coil via the first core is expressed by the following equation (2) obtained by multiplying equation (1) by cos θ2.

ステータに対する第２コアの回転角度位置が、第１コアに対して２π／３だけ進んでいるため、上記の式（３）では、そのことを表すために、θ２に２π／３が加算されている。 Similarly, the magnetic flux Ψk2 of the magnetic pole passing through the second core of the soft magnetic material is expressed by the following formula (3).

Since the rotation angle position of the second core with respect to the stator is advanced by 2π / 3 with respect to the first core, in the above equation (3), 2π / 3 is added to θ2 in order to express this fact. Yes.

Therefore, the magnetic flux Ψu2 of the magnetic pole passing through the U-phase coil via the second core is expressed by the following equation (4) obtained by multiplying equation (3) by cos (θ2 + 2π / 3).

Similarly, the magnetic flux Ψu3 of the magnetic pole that passes through the U-phase coil via the third core of the soft magnetic material is expressed by the following equation (5).

In the first rotating machine as shown in FIG. 44, the magnetic flux Ψu of the magnetic pole passing through the U-phase coil via the soft magnetic material is the magnetic flux Ψu1 expressed by the above equations (2), (4), and (5). Since ~ Ψu3 is added, it is expressed by the following equation (6).

ここで、ａ、ｂおよびｃはそれぞれ、磁極の極対数、軟磁性体の数および電機子磁極の極対数である。また、この式（７）を、三角関数の和と積の公式に基づいて変形すると、次式（８）が得られる。

Further, by generalizing this equation (6), the magnetic flux Ψu of the magnetic pole passing through the U-phase coil via the soft magnetic material is expressed by the following equation (7).

Here, a, b, and c are the number of pole pairs of the magnetic poles, the number of soft magnetic bodies, and the number of pole pairs of the armature magnetic poles, respectively. Further, when this equation (7) is transformed based on the formula of the sum and product of trigonometric functions, the following equation (8) is obtained.

この式（９）を三角関数の加法定理に基づいて整理すると、次式（１０）が得られる。

In this equation (8), when b = a + c and rearranging based on cos (θ + 2π) = cos θ, the following equation (9) is obtained.

When this equation (9) is arranged based on the addition theorem of trigonometric functions, the following equation (10) is obtained.

The second term on the right side of the equation (10) becomes 0 as apparent from the following equation (11) when arranged based on the sum of series and Euler's formula on condition that a−c ≠ 0.

In addition, the third term on the right side of the above equation (10) is also set to the value 0 as is clear from the following equation (12) when arranged based on the sum of the series and Euler's formula on the condition that a−c ≠ 0. become.

また、この式（１３）において、ａ／ｃ＝αとすると、次式（１４）が得られる。

As described above, when a−c ≠ 0, the magnetic flux Ψu of the magnetic pole passing through the U-phase coil via the soft magnetic material is expressed by the following equation (13).

Further, in this equation (13), when a / c = α, the following equation (14) is obtained.

ここで、θｅ２は、Ｕ相コイルに対する第１コアの回転角度位置θ２に電機子磁極の極対数ｃを乗算していることから明らかなように、Ｕ相コイルに対する第１コアの電気角度位置を表す。また、θｅ１は、Ｕ相コイルに対する磁極の回転角度位置θ１に電機子磁極の極対数ｃを乗算していることから明らかなように、Ｕ相コイルに対する磁極の電気角度位置を表す。 Further, in this equation (14), when c · θ2 = θe2 and c · θ1 = θe1, the following equation (15) is obtained.

Here, θe2 represents the electrical angle position of the first core relative to the U-phase coil, as is apparent from multiplying the rotation angle position θ2 of the first core relative to the U-phase coil by the pole pair number c of the armature magnetic pole. Represent. Further, θe1 represents the electrical angle position of the magnetic pole with respect to the U-phase coil, as is apparent from the fact that the rotation angle position θ1 of the magnetic pole with respect to the U-phase coil is multiplied by the pole pair number c of the armature magnetic pole.

Similarly, the magnetic flux Ψv of the magnetic pole passing through the V-phase coil via the soft magnetic material is delayed by an electrical angle 2π / 3 with respect to the U-phase coil because the electrical angle position of the V-phase coil is 16). Further, the magnetic flux Ψw of the magnetic pole passing through the W-phase coil via the soft magnetic material is such that the electrical angle position of the W-phase coil is advanced by an electrical angle of 2π / 3 with respect to the U-phase coil. ).

ここで、ωｅ１は、θｅ１の時間微分値、すなわち、ステータに対する第１ロータの角速度を電気角速度に換算した値（以下「第１ロータ電気角速度」という）であり、ωｅ２は、θｅ２の時間微分値、すなわち、ステータに対する第２ロータの角速度を電気角速度に換算した値（以下「第２ロータ電気角速度」という）である。 Further, when the magnetic fluxes Ψu to Ψw represented by the above expressions (15) to (17) are differentiated with respect to time, the following expressions (18) to (20) are obtained, respectively.

Here, ωe1 is a time differential value of θe1, that is, a value obtained by converting the angular velocity of the first rotor relative to the stator into an electrical angular velocity (hereinafter referred to as “first rotor electrical angular velocity”), and ωe2 is a time differential value of θe2. That is, a value obtained by converting the angular velocity of the second rotor with respect to the stator into an electrical angular velocity (hereinafter referred to as “second rotor electrical angular velocity”).

  Furthermore, the magnetic flux of the magnetic pole passing directly through the U-phase to W-phase coils without using a soft magnetic material is extremely small, and its influence can be ignored. Therefore, the time differential values dΨu / dt to dΨw / dt (formulas (18) to (20)) of the magnetic fluxes Ψu to Ψw of the magnetic poles passing through the U-phase to W-phase coils via the soft magnetic material are transferred to the stator. On the other hand, the counter electromotive voltage (inductive electromotive voltage) generated in the U-phase to W-phase coils as the magnetic pole and the soft magnetic body rotate is shown.

ここで、Ｉは、Ｕ相〜Ｗ相コイルに流す電流の振幅（最大値）である。 From this, the currents Iu, Iv, and Iw that flow through the U-phase, V-phase, and W-phase coils are expressed by the following equations (21), (22), and (23).

Here, I is the amplitude (maximum value) of the current passed through the U-phase to W-phase coils.

Further, from these equations (21) to (23), the electric angle position θmf of the rotating magnetic field vector with respect to the U-phase coil is expressed by the following equation (24), and the electric angular velocity of the rotating magnetic field with respect to the U-phase coil ( Ωmf (hereinafter referred to as “magnetic field electrical angular velocity”) is expressed by the following equation (25).

この式（２６）に上記の式（１８）〜（２３）を代入し、整理すると、次式（２７）が得られる。

Furthermore, the mechanical output (power) W output to the first and second rotors when the currents Iu to Iw flow through the U-phase to W-phase coils, respectively, is expressed by the following equation (26) excluding the reluctance. Is done.

Substituting the above formulas (18) to (23) into this formula (26) and rearranging, the following formula (27) is obtained.

これらの式（２７）および（２８）から明らかなように、第１および第２ロータ伝達トルクＴ１，Ｔ２は、次式（２９）および（３０）でそれぞれ表される。

Further, the relationship among the mechanical output W, the first and second rotor transmission torques T1 and T2 described above, and the first and second rotor electrical angular velocities ωe1 and ωe2 is expressed by the following equation (28).

As is clear from these equations (27) and (28), the first and second rotor transmission torques T1 and T2 are expressed by the following equations (29) and (30), respectively.

さらに、これらの式（２９）〜（３１）より、次式（３２）が得られる。

この式（３２）で表されるトルクの関係、および式（２５）で表される電気角速度の関係は、遊星歯車装置のサンギヤとリングギヤとキャリアにおけるトルクおよび回転速度の関係とまったく同じである。 Further, from the fact that the electric power supplied to the stator and the mechanical output W are equal to each other (however, the loss is ignored), and from the above formulas (25) and (27), the above-mentioned driving equivalent torque Te is given by the following formula (31 ).

Furthermore, from these formulas (29) to (31), the following formula (32) is obtained.

The relationship between the torque represented by the equation (32) and the relationship between the electrical angular velocities represented by the equation (25) are exactly the same as the relationship between the torque and rotational speed of the sun gear, ring gear, and carrier of the planetary gear device.

  Further, as described above, the relationship between the electrical angular velocities in Expression (25) and the torque in Expression (32) are established on condition that b = a + c and a−c ≠ 0. This condition b = a + c is expressed as b = (p + q) / 2, that is, b / q = (1 + p / q) / 2, where p is the number of magnetic poles and q is the number of armature magnetic poles. Here, assuming that p / q = m, b / q = (1 + m) / 2 is obtained. As is apparent from the fact that the condition of b = a + c is satisfied, the number of armature magnetic poles The ratio between the number of magnetic poles and the number of soft magnetic materials is 1: m: (1 + m) / 2. In addition, the fact that the condition of a−c ≠ 0 is satisfied indicates that m ≠ 1.0. According to the first rotating machine of the present invention, the ratio of the number of armature magnetic poles, the number of magnetic poles, and the number of soft magnetic bodies is set to 1: m: (1 + m) / 2 (m ≠ 1.0). Therefore, it can be seen that the relationship between the electrical angular velocity shown in the equation (25) and the torque relationship shown in the equation (32) are established, and the first rotating machine operates properly.

  As described above, in the first rotating machine, when a rotating magnetic field is generated by supplying electric power to the stator, a magnetic field line connecting the magnetic pole, the soft magnetic material, and the armature magnetic pole described above is generated. By the action, the electric power supplied to the stator is converted into motive power, and the motive power is output from the first rotor and the second rotor, and the relationship between the electrical angular velocity and torque as described above is established. For this reason, when power is input to at least one of the first and second rotors and the at least one rotor is rotated with respect to the stator in a state where electric power is not supplied to the stator, power generation occurs in the stator. In this case, a magnetic field line connecting the magnetic pole, the soft magnetic body, and the armature magnetic pole is generated, and the above-described equation (25) is generated by the action of the magnetic force by the magnetic field line. The relationship between the electrical angular velocity and the torque shown in Expression (32) is established.

  That is, when the generated power and the torque equivalent to the magnetic field electrical angular velocity ωmf are “equivalent torque for power generation”, the equation (32) is also generated between this power generation equivalent torque and the first and second rotor transmission torques T1 and T2. ) Is established. As is apparent from the above, the first rotating machine of the present invention has the same function as an apparatus combining a planetary gear device and a general one-rotor type rotating machine.

  In addition, unlike the above-described conventional case, the first rotating machine can be operated with only a single soft magnetic body row, so that the first rotating machine can be reduced in size and manufacturing cost can be reduced. Therefore, it is possible to reduce the size of the power unit and reduce the manufacturing cost. Further, as apparent from the equations (25) and (32), α = a / c, that is, by setting the ratio of the number of pole pairs of the magnetic poles to the number of pole pairs of the armature magnetic poles, the magnetic field electrical angular velocity ωmf, And the relationship between the second rotor electrical angular velocity ωe1 and ωe2 and the relationship between the driving equivalent torque Te (equivalent torque for power generation) and the first and second rotor transmission torques T1 and T2, and therefore, The degree of freedom in designing the first rotating machine can be increased, and as a result, the degree of freedom in designing the power unit can be increased. This effect is also obtained when the number of phases of the stator coils is other than the value 3 described above.

  According to the above-described configuration, one of the first and second rotors of the first rotating machine is connected to the output part of the heat engine and the other is connected to the driven part. The rotor is coupled to the driven part. Further, the operations of the heat engine and the first and second rotating machines are controlled by the control device. As described above, the driven part can be driven by the heat engine, the first rotating machine, and the second rotating machine, or the output part can be driven by the first rotating machine.

  Further, as described above, in the first rotating machine, the first and second rotors are in a state of being magnetically coupled to each other. For this reason, when driving force is transmitted to the output unit in order to drive the output unit in order to start the heat engine, the driving force is driven by the connection relationship between the various components described above. The speed of the driven part may fluctuate as a result.

  According to the configuration described above, at the time of starting the heat engine, at least one operation of the first and second rotating machines is performed so as to suppress a change in the speed of the driven part due to the transmission of the driving force to the output part. Be controlled. In this case, as is apparent from the fact that the other of the first and second rotors of the first rotating machine is connected to the driven part and the function of the first rotating machine described above, when starting the heat engine, By controlling the operation of the single-rotor as described above, it is possible to suppress fluctuations in the speed of the driven part, and it is therefore possible to improve the merchantability. Further, as is apparent from the above-described configuration, the second rotating machine can output power or braking force from the rotor. Since the rotor of the second rotating machine is connected to the driven part, the speed fluctuation of the driven part is controlled by controlling the operation of the second rotating machine as described above when starting the heat engine. Can be suppressed, and merchantability can be improved. Furthermore, the same effect can be obtained by controlling the operations of both the first and second rotating machines as described above.

  In addition, in the “mechanical connection” in the present specification and the claims, in addition to connecting various elements via a shaft, a gear, a pulley, a chain, etc., a speed change mechanism such as a gear is not used. In addition, it is also included that each element is directly connected (directly connected) by a shaft or the like.

  The invention according to claim 2 further includes a starter 31 for driving the output unit to start the heat engine in the power unit 1, 1 </ b> A according to claim 1, and when the control device starts the heat engine, The starter 31 is actuated (step 12 in FIG. 20, step 12 in FIG. 22), and the first and second speeds are controlled so as to suppress the speed change of the driven part due to the transmission of the driving force from the starter 31 to the output part. The operation of at least one of the two-rotor machines 11 and 21 is controlled (step 13 in FIG. 20 and step 15 in FIG. 22).

  According to this configuration, when starting the heat engine, the output unit is driven by operating the starter. Therefore, the output unit can be appropriately driven to start the heat engine, and thus the heat engine is started appropriately. be able to. In this case, the operation of at least one of the first and second rotating machines is controlled so as to suppress the speed change of the driven part due to the transmission of the driving force from the starter to the output part. As described in the description of claim 1, when starting the heat engine, by controlling the operation of at least one of the first and second rotating machines as described above, the speed fluctuation of the driven part is suppressed. Can do.

  According to a third aspect of the present invention, in the power plant 1, 1A according to the first aspect, the control device controls the operation of the first rotating machine 11 to drive the output unit when starting the heat engine ( Along with Step 2 in FIG. 18 and Step 21 in FIG. 25, the operation of the second rotating machine 21 is controlled so as to suppress the speed change of the driven part due to the transmission of the driving force to the output part (FIG. 18). Step 3 in FIG. 25 and step 22 in FIG. 25).

  According to this configuration, when starting the heat engine, the operation of the first rotating machine is controlled to drive the output unit. As described above, as is apparent from the fact that one of the first and second rotors of the first rotating machine is connected to the output unit and the function of the first rotating machine, the first rotation is performed when starting the heat engine. By controlling the operation of the machine as described above, it is possible to appropriately drive the output unit, and thus to appropriately start the heat engine. Further, in this case, since the operation of the second rotating machine is controlled so that the speed change of the driven part due to the transmission of the driving force to the output part does not occur, as described in the description of claim 1 The speed fluctuation of the driven part can be suppressed.

  According to a fourth aspect of the present invention, in the power plant 1, 1A according to any one of the first to third aspects, an auxiliary machine (compressor 51) is mechanically connected to the output portion to start the heat engine. Power transmission limiting means (clutch CL, ECU 2, step 1 in FIG. 18, step 11 in FIG. 20, step 11 in FIG. 22) for limiting transmission of driving force for driving the output unit to the auxiliary machine. It is further provided with the feature.

  According to this configuration, since the auxiliary machine is connected to the output unit, when the driving force is transmitted to the output unit in order to start the heat engine, the driving force is also transmitted to the auxiliary machine accordingly. As a result, since the driving force actually transmitted to the output unit is reduced, a larger driving force is required for starting the heat engine. According to the above-described configuration, when starting the heat engine, the transmission of the driving force for driving the output unit to the auxiliary machine is limited by the power transmission limiting unit. Therefore, when starting the heat engine, it is possible to suppress the driving force actually transmitted to the output unit from being reduced as described above, so that the output unit can be driven appropriately, and thus the heat engine is appropriately operated. Can be started.

  In order to achieve the above object, the invention according to claim 5 is a power unit 1B for driving a driven part (drive wheels DW and DW in the embodiments (hereinafter the same in this section)), Of the heat engine (engine 3) having an output section (crankshaft 3a) for outputting the power, the first rotating machine 11, the second rotating machine 71, the heat engine, the first and second rotating machines 11, 71. And a control device (ECU 2, first PDU 41, second PDU 42, VCU 43) for controlling the operation, and the first rotating machine 11 includes a plurality of predetermined first magnetic poles (permanent magnets 14a) arranged in the first circumferential direction. A first rotor 14 that is rotatable in the first circumferential direction and includes a first magnetic pole row that is arranged so that each of two adjacent first magnetic poles have different polarities, and a first magnetic pole row Arranged to face each other, By generating a plurality of constant first armature magnetic poles, a first armature row (iron cores 13a, U for generating a first rotating magnetic field rotating in the first circumferential direction between the first magnetic pole row and the first magnetic pole row) To the stationary first stator 13 having the W-phase coils 13c to 13e) and a plurality of predetermined first soft magnetic bodies (cores 15a) arranged in the first circumferential direction at intervals from each other, and A second rotor 15 rotatable in the first circumferential direction and having a first soft magnetic body row disposed between the one magnetic pole row and the first armature row, and the number of first armature magnetic poles, The ratio between the number of first magnetic poles and the number of first soft magnetic bodies is set to 1: m: (1 + m) / 2 (m ≠ 1.0). It is composed of a plurality of predetermined second magnetic poles (permanent magnets 74a) arranged in the direction, and two adjacent second magnetic poles have different polarities from each other. A third rotor 74 having a second magnetic pole array arranged in the second direction and rotatable in the second circumferential direction, and arranged to face the second magnetic pole array, and generates a plurality of predetermined second armature magnetic poles And having a second armature row (iron core 73a, U-phase to W-phase coil 73b) for generating a second rotating magnetic field that rotates in the second circumferential direction between the second magnetic pole row and the stationary armature. Of the second stator 73 and a plurality of second soft magnetic bodies (cores 75a) arranged in the second circumferential direction at a distance from each other, and between the second magnetic pole row and the second armature row. A fourth rotor 75 having a second row of soft magnetic bodies arranged and rotatable in the second circumferential direction, the number of second armature magnetic poles, the number of second magnetic poles, and the second soft magnetic body The ratio to the number is set to 1: n: (1 + n) / 2 (n ≠ 1.0), and the second and third rotors 15, 74 is mechanically connected to the output part, and the first and fourth rotors 14 and 75 are mechanically connected to the driven parts. When the control device starts the heat engine, the output part The operation of at least one of the first and second rotating machines 11 and 71 is controlled so as to suppress the speed change of the driven part due to the transmission of the driving force to (step 31 in FIG. 34, step in FIG. 36) 41).

  According to this configuration, since both the first and second rotating machines are configured in the same manner as the first rotating machine of claim 1, they have the same function as the first rotating machine of claim 1. . Therefore, similarly to the power unit of claim 1, it is possible to reduce the size and manufacturing cost of the first and second rotating machines, and to reduce the size and manufacturing cost of the power unit. Furthermore, the freedom degree of design of a 1st and 2nd rotary machine can be raised, and, therefore, the freedom degree of design of a power plant can be raised.

  Further, according to the above-described configuration, the second rotor of the first rotating machine and the third rotor of the second rotating machine are connected to the output unit of the heat engine, and the first rotor and the second rotor of the first rotating machine. A fourth rotor of the rotating machine is connected to the driven part. As described above, the driven unit can be driven by the heat engine, the first rotating machine, and the second rotating machine, and the output unit can be driven by the first rotating machine and the second rotating machine.

  As in the first rotating machine of claim 1, in the first rotating machine, the first and second rotors are in a state of being magnetically coupled to each other, and in the second rotating machine, the third and fourth rotors are They are in a state of being magnetically coupled to each other. For this reason, when the driving force is transmitted to the output unit in order to start the heat engine, the driving force also acts on the driven portion due to the connection relationship between the various components described above. As a result, the speed of the driven part may vary.

  According to the configuration described above, at the time of starting the heat engine, at least one operation of the first and second rotating machines is performed so as to suppress a change in the speed of the driven part due to the transmission of the driving force to the output part. Be controlled. In this case, as is apparent from the fact that the first rotor of the first rotating machine is connected to the driven part and the function of the first rotating machine, the operation of the first rotating machine is performed as described above when starting the heat engine. By controlling like this, it can suppress that the speed of a to-be-driven part fluctuates, Therefore, merchantability can be improved. Further, as is clear from the fact that the fourth rotor of the second rotating machine is connected to the driven part and the function of the second rotating machine, the operation of the second rotating machine is performed as described above when starting the heat engine. By controlling in this way, it can suppress that the speed of a to-be-driven part fluctuates, Therefore, merchantability can be improved. In this case, as is apparent from the function of the second rotating machine described above, the second rotating magnetic field, the third and fourth rotors rotate while maintaining a collinear relationship regarding the rotational speed, and a collinear line representing this collinear relationship. In the figure, since the straight lines representing the second rotating magnetic field and the rotation speed of the fourth rotor are adjacent to each other, the operation of the second rotating machine can be controlled appropriately and easily. Furthermore, by controlling the operations of both the first and second rotating machines as described above, the above-described effects can be obtained similarly.

  The power plant 1B according to claim 6 further includes a starter 31 that drives the output unit to start the heat engine, and the control device starts the starter 31 when starting the heat engine. (Step 12 in FIG. 36) and at least one of the first and second rotating machines 11 and 71 so as to suppress a change in the speed of the driven part due to the transmission of the driving force from the starter 31 to the output part. One operation is controlled (step 41 in FIG. 36).

  According to this configuration, when starting the heat engine, the output unit is driven by operating the starter. Therefore, the output unit can be appropriately driven to start the heat engine, and thus the heat engine is started appropriately. be able to. In this case, the operation of at least one of the first and second rotating machines is controlled so as to suppress the speed change of the driven part due to the transmission of the driving force from the starter to the output part. As described in the description of claim 5, when starting the heat engine, the speed fluctuation of the driven part is suppressed by controlling the operation of at least one of the first and second rotating machines as described above. Can do.

  According to a seventh aspect of the present invention, in the power plant 1B according to the fifth aspect, when the control device starts the heat engine, the control device suppresses a change in speed of the driven portion due to transmission of the driving force to the output portion. In this manner, the operation of one of the first and second rotating machines 11, 71 is controlled (step 31 in FIG. 34), and the other operation of the first and second rotating machines 11, 71 is driven so as to drive the output unit. Control is performed (step 2 in FIG. 34).

  According to this configuration, when the heat engine is started, the other operation of the first and second rotating machines is controlled so as to drive the output unit. As described above, as is apparent from the fact that the second rotor of the first rotating machine is connected to the output unit and the function of the first rotating machine, the operation of the first rotating machine is performed when the heat engine is started. By controlling as described above, the output unit can be appropriately driven, and accordingly, the heat engine can be appropriately started. Further, as described above, as is apparent from the fact that the third rotor of the second rotating machine is connected to the output unit and the function of the second rotating machine, the operation of the second rotating machine is performed when starting the heat engine. As described above, the output unit can be appropriately driven, and accordingly, the heat engine can be appropriately started. Furthermore, in this case, one operation of the first and second rotating machines is controlled so as to suppress the speed change of the driven part due to the transmission of the driving force to the output part. As described above, the speed fluctuation of the driven part can be suppressed.

  According to an eighth aspect of the present invention, in the power plant 1B according to any of the fifth to seventh aspects, an auxiliary machine (compressor 51) is mechanically connected to the output portion, and the heat engine is started. The power transmission limiting means (clutch CL, ECU 2, step 1 in FIG. 34, step 11 in FIG. 36) for limiting the transmission of the driving force for driving the output unit to the auxiliary machine is further provided.

  According to this configuration, since the auxiliary machine is connected to the output unit as in the power unit of claim 4, when the driving force is transmitted to the output unit to start the heat engine, the auxiliary machine is accordingly The driving force is also transmitted. As a result, since the driving force actually transmitted to the output unit is reduced, a larger driving force is required for starting the heat engine. According to the above-described configuration, when starting the heat engine, the transmission of the driving force for driving the output unit to the auxiliary machine is limited by the power transmission limiting unit. Therefore, when starting the heat engine, it is possible to suppress the driving force actually transmitted to the output unit from being reduced as described above, so that the output unit can be driven appropriately, and thus the heat engine is appropriately operated. Can be started.

  In order to achieve the object, an invention according to claim 9 is a power unit 1C for driving a driven part (drive wheels DW and DW in the embodiments (hereinafter, the same in this section)), A heat engine (engine 3) having an output section (crankshaft 3a) for outputting the power, the first rotating machine 11, and the supplied electric power is converted into motive power, output from the rotor 23, and input to the rotor 23 The second rotating machine 21 that can convert the generated power into electric power and the second rotating machine 21 can transmit power to each other, and while transmitting the power, while rotating while maintaining a collinear relationship with respect to the rotational speed, the rotational speed In the collinear diagram showing the relationship, a power transmission mechanism (planetary gear device PG) having a first element, a second element, and a third element configured such that straight lines representing the respective rotational speeds are arranged in order, and a heat engine , First and second rotation And a control device (ECU 2, first PDU 41, second PDU 42, VCU 43) for controlling the operation of 11 and 21, and the first rotating machine 11 includes a plurality of predetermined magnetic poles (permanent magnets 14a) arranged in the circumferential direction. And a first rotor 14 that is rotatable in the circumferential direction and has a magnetic pole row arranged so that each of two adjacent magnetic poles have different polarities, and is arranged to face the magnetic pole row By generating a predetermined plurality of armature magnetic poles, an armature array (iron core 13a, U to W phase coils 13c to 13e) for generating a rotating magnetic field rotating in the circumferential direction between the magnetic pole arrays is provided. The stationary stator (first stator 13) and a plurality of predetermined soft magnetic bodies (cores 15a) arranged in the circumferential direction at intervals from each other, and disposed between the magnetic pole array and the armature array. Soft A circumferentially rotatable second rotor 15 having a solid body row, and the ratio of the number of armature magnetic poles to the number of magnetic poles and the number of soft magnetic bodies is 1: m: (1 + m) / 2 (m ≠ 1.0), and one of the first rotor 14 and the second element and the second rotor 15 and the first element is mechanically connected to the output unit, and the first rotor 14 and the second element The second element and the other of the second rotor 15 and the first element are mechanically connected to the driven part, and the third element is mechanically connected to the rotor 23, and the control device starts the heat engine. In doing so, the operation of at least one of the first and second rotating machines 11 and 21 is controlled so as to suppress the speed change of the driven part due to the transmission of the driving force to the output part (step 51 in FIG. 40). 42, step 61) of FIG.

  According to this configuration, since the first rotating machine is configured in the same manner as the first rotating machine of claim 1, it has the same function as the first rotating machine of claim 1. Therefore, similarly to the power unit of the first aspect, the first rotating machine can be reduced in size and the manufacturing cost can be reduced, and as a result, the power unit can be reduced in size and the manufacturing cost can be reduced. Furthermore, the freedom degree of design of a 1st rotary machine can be raised, and the freedom degree of design of a power plant can be raised by extension.

  Further, according to the configuration described above, in the power transmission mechanism, the first to third elements rotate while maintaining a collinear relationship with respect to the number of rotations between each other during the transmission of power between each other. In the collinear chart showing the relationship between the numbers, straight lines representing the respective rotational speeds are arranged in order. Furthermore, one of the first rotor and the second element of the first rotating machine and the second rotor and the first element of the first rotating machine are connected to the output portion of the heat engine, and the first rotor, the second element, and the second element are connected. The other of the rotor and the first element is connected to the driven part, and the third element is connected to the rotor of the second rotating machine. The operations of the heat engine and the first and second rotating machines are controlled by the control device. As described above, the driven unit can be driven by the heat engine, the first rotating machine, and the second rotating machine, and the output unit can be driven by the first rotating machine and the second rotating machine.

  Further, like the first rotating machine of claim 1, in the first rotating machine, the first and second rotors are in a state of being magnetically coupled to each other, and the first to third elements can transmit power to each other. It is configured. For this reason, when the driving force is transmitted to the output unit in order to start the heat engine, the driving force also acts on the driven portion due to the connection relationship between the various components described above. As a result, the speed of the driven part may vary.

  According to the configuration described above, at the time of starting the heat engine, at least one operation of the first and second rotating machines is performed so as to suppress a change in the speed of the driven part due to the transmission of the driving force to the output part. Be controlled. As is apparent from the fact that one of the first and second rotors of the first rotating machine is connected to the driven part and the function of the first rotating machine, the operation of the first rotating machine is performed when starting the heat engine. By controlling the above as described above, it is possible to suppress fluctuations in the speed of the driven part, and therefore it is possible to improve the merchantability. In this case, as is clear from the function of the first rotating machine described above, the rotating magnetic field, the first and second rotors rotate while maintaining the collinear relationship regarding the rotational speed, and in the collinear diagram representing this collinear relationship. The straight lines representing the rotating magnetic field and the rotation speed of the second rotor are adjacent to each other. For this reason, when the second rotor is connected to the driven part, the operation of the first rotating machine can be controlled appropriately and easily.

  Further, as is apparent from the above-described configuration, the second rotating machine can output power or braking force from the rotor. A third element of the first to third elements that can transmit power to each other is coupled to the rotor of the second rotating machine, and one of the first and second elements is coupled to the driven portion. Therefore, when starting the heat engine, the speed of the driven part is controlled by controlling the operation of the second rotating machine so as to suppress the speed change of the driven part due to the transmission of the driving force to the output part. Fluctuation can be suppressed, and therefore merchantability can be improved. In this case, as described above, since the straight lines representing the rotation speeds of the second and third elements are adjacent to each other in the collinear diagram representing the relationship between the rotation speeds, the second element is connected to the driven part. When this is done, the operation of the second rotating machine can be controlled appropriately and easily. Further, when the heat engine is started, the above-described operation is performed by controlling the operations of both the first and second rotating machines so as to suppress the speed change of the driven part due to the transmission of the driving force to the output part. The effect obtained can be obtained similarly.

  The power unit 1C according to claim 10 further includes a starter 31 that drives an output unit to start the heat engine, and the control device starts the starter 31 when starting the heat engine. (Step 12 in FIG. 42), and at least the first and second rotating machines 11 and 21 are controlled so as to suppress the speed change of the driven parts due to the transmission of the driving force from the starter 31 to the output part. One operation is controlled (step 61 in FIG. 42).

  According to this configuration, when starting the heat engine, the output unit is driven by operating the starter. Therefore, the output unit can be appropriately driven to start the heat engine, and thus the heat engine is started appropriately. be able to. In this case, the operation of at least one of the first and second rotating machines is controlled so as to suppress the speed change of the driven part due to the transmission of the driving force from the starter to the output part. As described in the description of claim 9, when starting the heat engine, the speed fluctuation of the driven part is suppressed by controlling the operation of at least one of the first and second rotating machines as described above. Can do.

  According to an eleventh aspect of the present invention, in the power plant 1C according to the ninth aspect, when the control device starts the heat engine, the control device suppresses a speed change of the driven portion due to transmission of the driving force to the output portion. Thus, the operation of one of the first and second rotating machines 11 and 21 is controlled (step 51 in FIG. 40), and the other operation of the first and second rotating machines 11 and 21 is driven so as to drive the output unit. It is characterized by controlling (step 2 in FIG. 40).

  According to this configuration, when the heat engine is started, one operation of the first and second rotating machines is controlled so as to suppress a change in the speed of the driven part due to the transmission of the driving force to the output part. At the same time, the other operation of the first and second rotating machines is controlled to drive the output unit. In this case, as apparent from the fact that one of the first and second rotors of the first rotating machine is connected to the output unit and the function of the first rotating machine described above, the operation of the first rotating machine is performed as described above. By controlling in this way, an output part can be driven appropriately and by extension, a heat engine can be started appropriately.

  In addition, one of the first and second elements among the first to third elements capable of transmitting power between each other is coupled to the output unit, and the third element is coupled to the rotor of the second rotating machine. Therefore, by controlling the operation of the second rotating machine as described above, the output unit can be appropriately driven, and thus the heat engine can be appropriately started. Furthermore, as described in the description of claim 9, when starting the heat engine, the operation of one of the first and second rotating machines is controlled as described above to suppress the speed fluctuation of the driven part. be able to.

  According to a twelfth aspect of the present invention, in the power plant 1C according to any one of the ninth to eleventh aspects, an auxiliary machine (compressor 51) is mechanically connected to the output portion, and the heat engine is started. The power transmission limiting means (clutch CL, ECU 2, step 1 in FIG. 40, step 11 in FIG. 42) is further provided to limit transmission of the driving force transmitted to the output unit to the auxiliary machine.

  According to this configuration, since the auxiliary machine is connected to the output unit, similarly to the power unit of claim 4, when the driving force is transmitted to the output unit to start the heat engine, the auxiliary machine is also driven. Power is transmitted. As a result, since the driving force actually transmitted to the output unit is reduced, a larger driving force is required for starting the heat engine. According to the above-described configuration, when starting the heat engine, the transmission of the driving force for driving the output unit to the auxiliary machine is limited by the power transmission limiting unit. Therefore, when starting the heat engine, it is possible to suppress the driving force transmitted to the output unit from being reduced as described above, and thereby the output unit can be driven appropriately, and thus the heat engine can be appropriately operated. Can be started.

It is a figure which shows roughly the power plant by 1st Embodiment of this invention with the drive wheel to which this is applied. It is a block diagram which shows ECU etc. with which the power plant shown in FIG. 1 is provided. It is a block diagram which shows the connection relation of the 1st stator with which the power plant shown in FIG. 1 is equipped, a stator, a main battery, etc. It is an expanded sectional view of the 1st rotary machine shown in FIG. FIG. 2 is a diagram schematically illustrating a first stator, a first rotor, and a second rotor of the first rotating machine shown in FIG. FIG. 3 is a velocity collinear diagram illustrating an example of a relationship between a first magnetic field electrical angular velocity and first and second rotor electrical angular velocities in the first rotating machine illustrated in FIG. 1. It is a figure for demonstrating the operation | movement at the time of supplying electric power to a 1st stator in the state which hold | maintained the 1st rotor of the 1st rotary machine shown in FIG. 1 so that rotation was impossible. FIG. 8 is a diagram for explaining an operation subsequent to FIG. 7. FIG. 9 is a diagram for explaining an operation subsequent to FIG. 8. It is a figure for demonstrating the positional relationship of a 1st armature magnetic pole and a core when a 1st armature magnetic pole rotates only the electrical angle 2pi from the state shown in FIG. It is a figure for demonstrating the operation | movement at the time of supplying electric power to a 1st stator in the state which hold | maintained the 2nd rotor of the 1st rotary machine shown in FIG. 1 so that rotation was impossible. FIG. 12 is a diagram for explaining an operation subsequent to FIG. 11. FIG. 13 is a diagram for explaining an operation subsequent to FIG. 12. As an example of the transition of the U-phase to W-phase back electromotive force voltage of the first rotating machine shown in FIG. 1, the numbers of the first armature magnetic pole, the core, and the first magnetic pole are set to 16, 18 and 20, respectively. It is a figure shown about the case where 1 rotor is hold | maintained so that rotation is impossible. An example of the transition of the first driving equivalent torque of the first rotating machine shown in FIG. 1, the first and second rotor transmission torques, the number of first armature magnetic poles, cores and first magnet magnetic poles being 16, 18 and It is a figure shown about the case where it sets to 20 and hold | maintains a 1st rotor so that rotation is impossible. As an example of the transition of the U-phase to W-phase back electromotive force voltage of the first rotating machine shown in FIG. 1, the number of first armature magnetic poles, cores, and first magnet magnetic poles is set to 16, 18 and 20, respectively. It is a figure shown about the case where the 2nd rotor is hold | maintained so that rotation is impossible. An example of the transition of the first driving equivalent torque of the first rotating machine shown in FIG. 1, the first and second rotor transmission torques, the number of first armature magnetic poles, cores and first magnet magnetic poles being 16, 18 and It is a figure shown about the case where it sets to 20 and hold | maintains a 2nd rotor so that rotation is impossible. It is a flowchart which shows the process performed in the power plant shown in FIG. FIG. 19 is a velocity alignment chart showing an example of a relationship between rotational speeds and torques between various types of rotary elements in the power plant shown in FIG. 1 during execution of the processing shown in FIG. 18. It is a flowchart which shows the process different from FIG. 18 performed in the power plant shown in FIG. FIG. 21 is a collinear chart illustrating an example of a rotational speed relationship and a torque relationship between various types of rotary elements in the power plant shown in FIG. 1 during execution of the processing shown in FIG. 20. FIG. 21 is a flowchart showing processing different from those in FIGS. 18 and 20 executed in the power plant shown in FIG. 1. FIG. 23 is a collinear chart illustrating an example of a rotational speed relationship and a torque relationship between various types of rotary elements in the power plant shown in FIG. 1 during execution of the processing shown in FIG. 22. It is a figure which shows roughly the power plant by 2nd Embodiment of this invention with the drive wheel to which this is applied. It is a flowchart which shows the process performed in the power plant shown in FIG. FIG. 26 is a collinear chart illustrating an example of a rotational speed relationship and a torque relationship between various types of rotary elements in the power plant illustrated in FIG. 24 during execution of the processing illustrated in FIG. 25. FIG. 26 is a collinear chart illustrating an example of a rotational speed relationship and torque relationship between various types of rotary elements in the power plant shown in FIG. 24 during execution of processing different from that in FIG. 25. FIG. 28 is a collinear chart showing an example of the relationship between the number of rotations and the relationship between torques of various types of rotary elements in the power plant shown in FIG. 24 during execution of processing different from those in FIGS. 25 and 27. It is a figure which shows roughly the power plant by 3rd Embodiment of this invention with the drive wheel to which this is applied. FIG. 30 is a block diagram showing an ECU and the like included in the power plant shown in FIG. 29. FIG. 30 is a block diagram showing a connection relationship between a first stator, a second stator, a main battery, and the like included in the power plant shown in FIG. 29. It is an expanded sectional view of the 1st rotary machine shown in FIG. It is an expanded sectional view of the 2nd rotary machine shown in FIG. It is a flowchart which shows the process performed in the power plant shown in FIG. FIG. 35 is a collinear chart illustrating an example of a rotational speed relationship and a torque relationship between various types of rotary elements of the power plant shown in FIG. 29, during execution of the processing shown in FIG. 34. It is a flowchart which shows the process different from FIG. 34 performed in the power plant shown in FIG. FIG. 37 is a collinear chart illustrating an example of a rotational speed relationship and a torque relationship between various types of rotary elements of the power plant shown in FIG. 29, during execution of the processing shown in FIG. 36. It is a figure which shows roughly the power plant by 4th Embodiment of this invention with the drive wheel to which this is applied. It is a block diagram which shows ECU etc. with which the power plant shown in FIG. 38 is provided. It is a flowchart which shows the process performed in the power plant shown in FIG. FIG. 41 is a collinear chart illustrating an example of a rotational speed relationship and a torque relationship between various types of rotary elements of the power plant shown in FIG. 38, during execution of the processing shown in FIG. 40. It is a flowchart which shows the process different from FIG. 40 performed in the power plant shown in FIG. FIG. 43 A velocity collinear chart showing an example of a rotational speed relationship and a torque relationship between various types of rotary elements of the power plant shown in FIG. 38, during execution of the processing shown in FIG. 42. It is a figure which shows the equivalent circuit of the 1st rotary machine of this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. A power plant 1 according to the first embodiment of the present invention shown in FIGS. 1 and 2 is for driving drive wheels DW and DW of a vehicle (not shown), and is an internal combustion engine 3 as a power source. The first rotating machine 11 and the second rotating machine 21, a differential device DG for transmitting power, and an ECU 2 for controlling the operations of the internal combustion engine 3, the first and second rotating machines 11, 21 are provided. ing. In FIG. 1 and other drawings to be described later, hatching of a portion showing a cross section is appropriately omitted. Moreover, in the following description, connecting each element directly with a shaft or the like without using a speed change mechanism such as a gear is appropriately referred to as “direct connection”.

  An internal combustion engine (hereinafter referred to as “engine”) 3 is a gasoline engine, and includes a crankshaft 3a for outputting power, a fuel injection valve 3b, and a spark plug 3c. The valve opening time and timing of the fuel injection valve 3b and the ignition operation of the spark plug 3c are controlled by the ECU 2.

  A starter 31 for starting the engine 3 is mechanically connected to the crankshaft 3a via a one-way clutch (not shown). This one-way clutch connects between the crankshaft 3a and the starter 31 when power is transmitted from the starter 31 to the crankshaft 3a, and is disconnected when power is transmitted from the crankshaft 3a to the starter 31. To do. As shown in FIG. 3, an auxiliary battery 33 is electrically connected to the starter 31 via a relay 32. The relay 32 is electrically connected to the ECU 2, and the operation of the starter 31 is controlled by controlling the supply of electric power from the auxiliary battery 33 to the starter 31 by the control of the relay 32 by the ECU 2. Further, a first rotating shaft 4 is directly and coaxially connected to the crankshaft 3a via a flywheel (not shown), and the first rotating shaft 4 is freely rotatable by a bearing (not shown). It is supported by.

  As shown in FIGS. 1 and 4, the first rotating machine 11 is of a two-rotor type, and a first stator 13 that is stationary and a first rotor that is provided so as to face the first stator 13. 14 and a second rotor 15 provided between both of them. The first rotor 14, the second rotor 15, and the first stator 13 are arranged coaxially with the first rotation shaft 4, and are arranged in this order from the inside in the radial direction of the first rotation shaft 4. .

  The first stator 13 generates a first rotating magnetic field. As shown in FIGS. 4 and 5, the iron core 13a and the U-phase, V-phase, and W-phase coils 13c provided on the iron core 13a. , 13d, 13e. In FIG. 4, only the U-phase coil 13c is shown for convenience. The iron core 13a has a cylindrical shape in which a plurality of steel plates are laminated, extends in the axial direction of the first rotating shaft 4 (hereinafter simply referred to as “axial direction”), and is fixed to a non-movable case CA. Yes. In addition, twelve slots 13b are formed on the inner peripheral surface of the iron core 13a, and these slots 13b extend in the axial direction and are arranged in the circumferential direction of the first rotating shaft 4 (hereinafter simply referred to as “circumferential direction”). ”) At equal intervals. The U-phase to W-phase coils 13c to 13e are wound around the slot 13b by distributed winding (wave winding).

  3, the first stator 13 including the U-phase to W-phase coils 13c to 13e includes a first power drive unit (hereinafter referred to as “first PDU”) 41 and a voltage control unit (hereinafter referred to as “VCU”). A main battery 44 that can be charged and discharged is electrically connected via the terminal 43. The first PDU 41 is configured by an electric circuit such as an inverter, and outputs to the first stator 13 in a state in which the DC power supplied from the main battery 44 is converted into three-phase AC power. In addition, the VCU 43 is configured by an electric circuit such as a DC / DC converter, and outputs power to the first PDU 41 in a state where the power from the main battery 44 is boosted, and in a state where the power from the first PDU 41 is stepped down. And output to the main battery 44. Further, each of the first PDU 41 and the VCU 43 is electrically connected to the ECU 2 (see FIG. 2).

  In the first stator 13 having the above-described configuration, when power is supplied from the main battery 44 via the VCU 43 and the first PDU 41, or when power is generated as described later, the iron core 13a on the first rotor 14 side. At the end, four magnetic poles are generated at equal intervals in the circumferential direction (see FIG. 7), and the first rotating magnetic field generated by these magnetic poles rotates in the circumferential direction. Hereinafter, the magnetic pole generated in the iron core 13a is referred to as “first armature magnetic pole”. The polarities of the two first armature magnetic poles adjacent in the circumferential direction are different from each other. In FIG. 7 and other drawings to be described later, the first armature magnetic pole is represented by (N) and (S) on the iron core 13a and the U-phase to W-phase coils 13c to 13e.

  As shown in FIG. 5, the first rotor 14 has a first magnetic pole row composed of eight permanent magnets 14a. These permanent magnets 14 a are arranged at equal intervals in the circumferential direction, and the first magnetic pole row faces the iron core 13 a of the first stator 13. Each permanent magnet 14 a extends in the axial direction, and the length in the axial direction is set to be the same as that of the iron core 13 a of the first stator 13.

  Moreover, the permanent magnet 14a is attached to the outer peripheral surface of the ring-shaped attachment part 14b. The attachment portion 14b is made of a soft magnetic material such as iron or a laminate of a plurality of steel plates, and the inner peripheral surface thereof is attached to the outer peripheral surface of the disc-shaped flange 14c. The flange 14c is provided integrally with a second rotating shaft 5 that is rotatably supported by a bearing (not shown), whereby the first rotor 14 including the permanent magnet 14a is connected to the second rotating shaft 5. Is directly connected to the same axis. The second rotating shaft 5 is disposed coaxially with the crankshaft 3 a and the first rotating shaft 4. Furthermore, since the permanent magnets 14a are attached to the outer peripheral surface of the attachment portion 14b made of a soft magnetic material as described above, each permanent magnet 14a has (N) at the end on the first stator 13 side. Or one magnetic pole of (S) appears. In FIG. 5 and other drawings to be described later, the magnetic poles of the permanent magnet 14a are represented by (N) and (S). The polarities of the two permanent magnets 14a adjacent in the circumferential direction are different from each other.

  The second rotor 15 has a single first soft magnetic body row composed of six cores 15a. These cores 15a are arranged at equal intervals in the circumferential direction, and the first soft magnetic material rows are arranged at predetermined intervals between the iron core 13a of the first stator 13 and the magnetic pole rows of the first rotor 14, respectively. Are arranged apart from each other. Each core 15a is a soft magnetic material, for example, a laminate of a plurality of steel plates, and extends in the axial direction. Further, the length of the core 15a in the axial direction is set to be the same as that of the iron core 13a of the first stator 13 like the permanent magnet 14a. Furthermore, the core 15a is attached to the outer end portion of the disc-shaped flange 15b via a cylindrical connecting portion 15c that extends slightly in the axial direction. The flange 15b is attached to the first rotating shaft 4 described above. It is provided integrally. As described above, the second rotor 15 including the core 15a is directly connected coaxially to the crankshaft 3a via the first rotating shaft 4 and the flywheel. Further, a first pulley PU <b> 1 is integrally provided on the first rotating shaft 4 between the bearing and the second rotor 15. In FIG. 5 and FIG. 7, the connecting portion 15c and the flange 15b are omitted for convenience.

Next, the operation of the first rotating machine 11 having the above configuration will be described. As described above, the first rotating machine 11 has four first armature magnetic poles, eight magnetic poles of the permanent magnet 14a (hereinafter referred to as “first magnet magnetic pole”), and six cores 15a. That is, the ratio of the number of first armature magnetic poles, the number of first magnet magnetic poles, and the number of cores 15a is set to 1: 2.0: (1 + 2.0) / 2. The ratio of the number of pole pairs of the first magnetic pole to the number of pole pairs (hereinafter referred to as “first pole pair number ratio α”) is set to a value of 2.0. As is clear from this and the equations (18) to (20) described above, the U-phase to W-phase coil 13c as the first rotor 14 and the second rotor 15 rotate with respect to the first stator 13. To 13e (hereinafter referred to as “U-phase counter-electromotive voltage Vcu”, “V-phase counter-electromotive voltage Vcv”, and “W-phase counter-electromotive voltage Vcw”) are expressed by the following equations (33) and (34), respectively. And (35).

  Here, ψF is the maximum value of the magnetic flux of the first magnet magnetic pole. ΘER1 is the first rotor electrical angle, and the rotation angle position of the specific permanent magnet 14a of the first rotor 14 with respect to the specific U-phase coil 13c (hereinafter referred to as “reference coil”) is converted into an electrical angle position. Value. That is, the first rotor electrical angle θER1 is a value obtained by multiplying the rotation angle position of the specific permanent magnet 14a by the number of pole pairs of the first armature magnetic pole, that is, the value 2. Furthermore, θER2 is the second rotor electrical angle, and is a value obtained by converting the rotation angle position of the specific core 15a of the second rotor 15 with respect to the reference coil into the electrical angle position. That is, the second rotor electrical angle θER2 is a value obtained by multiplying the rotation angle position of the specific core 15a by the number of pole pairs (value 2) of the first armature magnetic pole.

  ΩER1 in the above equations (33) to (35) is the first rotor electrical angular velocity, and the time differential value of the first rotor electrical angle θER1, that is, the angular velocity of the first rotor 14 with respect to the first stator 13 is electrically It is a value converted into angular velocity. Further, ωER2 is the second rotor electrical angular velocity, and is a value obtained by converting the time differential value of the second rotor electrical angle θER2, that is, the angular velocity of the second rotor 15 with respect to the first stator 13 into the electrical angular velocity.

Further, as is apparent from the first pole pair number ratio α and the equations (21) to (23), the currents flowing through the U-phase, V-phase, and W-phase coils 13c, 13d, and 13e (hereinafter referred to as “U”, respectively). (Phase current Iu ”,“ V-phase current Iv ”, and“ W-phase current Iw ”) are expressed by the following equations (36), (37), and (38).

Here, I is the amplitude (maximum value) of the U-phase to W-phase currents Iu to Iw. Further, as is apparent from the first pole pair number ratio α (= 2.0) and the equations (24) and (25), the electrical angle position θMFR of the vector of the first rotating magnetic field of the first stator 13 with respect to the reference coil is The electrical angular velocity of the first rotating magnetic field with respect to the first stator 13 (hereinafter referred to as “first magnetic field electrical angular velocity ωMFR”) is represented by the following equation (40).

  For this reason, the relationship among the first magnetic field electrical angular velocity ωMFR, the first rotor electrical angular velocity ωER1 and the second rotor electrical angular velocity ωER2 is represented by a so-called speed collinear diagram, for example, as shown in FIG. In FIG. 6 and other velocity collinear charts described later, the vertical line intersecting the horizontal line indicating the value 0 is for representing the number of rotations of each rotating element, and the distance from this horizontal line to the white circle on the vertical line is This corresponds to the angular velocity (number of rotations) of the rotating element indicated on the upper and lower ends of the vertical line.

Further, assuming that the electric power supplied to the first stator 13 and the torque equivalent to the first magnetic field electrical angular velocity ωMFR are the first driving equivalent torque TSE1, the first driving equivalent torque TSE1 and the first driving equivalent torque TSE1 are transmitted to the first rotor 14. Between the torque (hereinafter, referred to as “first rotor transmission torque TR1”) and the torque transmitted to the second rotor 15 (hereinafter referred to as “second rotor transmission torque TR2”). 2.0) and the above equation (32), it is expressed by the following equation (41).

  The relationship between the electrical angular velocity and torque represented by the above equations (40) and (41) is that the rotational speed and torque of the sun gear, ring gear, and carrier of the planetary gear device in which the gear ratio of the sun gear and the ring gear is 1: 2. It is exactly the same as the relationship.

  Next, how the electric power supplied to the first stator 13 is specifically converted into power and output from the first rotor 14 and the second rotor 15 will be described. First, the case where electric power is supplied to the 1st stator 13 in the state which hold | maintained the 1st rotor 14 non-rotatably is demonstrated, referring FIGS. 7-9. In FIGS. 7 to 9, reference numerals of a plurality of components are omitted for convenience. The same applies to other drawings described later. In order to facilitate understanding, the same first armature magnetic pole and core 15a shown in FIGS. 7 to 9 are hatched.

  First, as shown in FIG. 7A, the center of one core 15a and the center of one permanent magnet 14a coincide with each other in the circumferential direction, and the third core 15a from the core 15a has a third core 15a. The first rotating magnetic field is generated so as to rotate to the left in the figure from the state where the center and the center of the fourth permanent magnet 14a from the permanent magnet 14a coincide with each other in the circumferential direction. At the start of the occurrence, every other first armature magnetic pole having the same polarity is made to coincide with the center of each permanent magnet 14a whose center coincides with the core 15a in the circumferential direction. The polarity of the first armature magnetic pole is made different from the polarity of the first magnet magnetic pole of the permanent magnet 14a.

  As described above, the first rotating magnetic field generated by the first stator 13 is generated between the first rotor 14 and the second rotor 15 having the core 15 a is disposed between the first stator 13 and the first rotor 14. Therefore, each core 15a is magnetized by the first armature magnetic pole and the first magnet magnetic pole. Because of this and the gap between adjacent cores 15a, magnetic field lines ML are generated that connect the first armature magnetic pole, the core 15a, and the first magnet magnetic pole. 7 to 9, the magnetic field lines ML in the iron core 13a and the attachment portion 14b are omitted for convenience. The same applies to other drawings described later.

  In the state shown in FIG. 7A, the magnetic lines of force ML connect the first armature magnetic pole, the core 15a, and the first magnet magnetic pole whose circumferential positions coincide with each other, and these first armature magnetic poles, It is generated so as to connect the first armature magnetic pole, the core 15a and the first magnet magnetic pole adjacent to each other in the circumferential direction of each of the core 15a and the first magnet magnetic pole. In this state, since the magnetic lines of force ML are linear, no magnetic force that rotates in the circumferential direction acts on the core 15a.

  When the first armature magnetic pole rotates from the position shown in FIG. 7 (a) to the position shown in FIG. 7 (b) along with the rotation of the first rotating magnetic field, the magnetic field lines ML are bent, and accordingly, Magnetic force acts on the core 15a so that the magnetic lines of force ML are linear. In this case, the magnetic force line ML is a rotation direction of the first rotating magnetic field (hereinafter referred to as “magnetic field rotation direction”) in the core 15a with respect to a straight line connecting the first armature magnetic pole and the first magnet magnetic pole connected to each other by the magnetic force line ML. ), The magnetic force acts to drive the core 15a in the magnetic field rotation direction. The core 15a is driven in the magnetic field rotation direction by the action of the magnetic force by the magnetic field lines ML, and rotates to the position shown in FIG. 7C. The second rotor 15 provided with the core 15a is also moved in the magnetic field rotation direction. Rotate. The broken lines in FIGS. 7B and 7C indicate that the magnetic flux amount of the magnetic field lines ML is extremely small and the magnetic connection between the first armature magnetic pole, the core 15a, and the first magnet magnetic pole is weak. Yes. The same applies to other drawings described later.

  Further, as the first rotating magnetic field further rotates, the above-described series of operations, that is, “the magnetic force line ML bends in the direction opposite to the magnetic field rotating direction in the core 15a → the core so that the magnetic force line ML becomes linear. As shown in FIGS. 8 (a) to 8 (d), FIGS. 9 (a) and 9 (b), the magnetic force acts on 15a → the core 15a and the second rotor 15 rotate in the direction of magnetic field rotation. Repeatedly. As described above, when electric power is supplied to the first stator 13 while the first rotor 14 is held in a non-rotatable state, the electric power is supplied to the first stator 13 by the action of the magnetic force due to the magnetic force lines ML as described above. The generated electric power is converted into power, and the power is output from the second rotor 15.

  FIG. 10 shows a state in which the first armature magnetic pole has been rotated by an electrical angle of 2π from the state of FIG. 7A. As is clear from the comparison between FIG. 10 and FIG. Is rotated in the same direction by a rotation angle of 1/3 with respect to the first armature magnetic pole. This result coincides with the fact that ωER2 = ωMFR / 3 is obtained by setting ωER1 = 0 in the equation (40).

  Next, an operation when electric power is supplied to the first stator 13 while the second rotor 15 is held unrotatable will be described with reference to FIGS. 11 to 13, as in FIGS. 7 to 9, the same first armature magnetic pole and permanent magnet 14 a are hatched for easy understanding. First, as shown in FIG. 11A, as in the case of FIG. 7A described above, the center of one core 15a and the center of one permanent magnet 14a coincide with each other in the circumferential direction. From the state in which the center of the third core 15a from the core 15a and the center of the fourth permanent magnet 14a from the permanent magnet 14a coincide with each other in the circumferential direction, the first rotating magnetic field is Generate to rotate toward. At the start of the occurrence, every other first armature magnetic pole having the same polarity is made to coincide with the center of each permanent magnet 14a whose center coincides with the core 15a in the circumferential direction. The polarity of the first armature magnetic pole is made different from the polarity of the first magnet magnetic pole of the permanent magnet 14a.

  In the state shown in FIG. 11 (a), as in FIG. 7 (a), the magnetic lines of force ML connect the first armature magnetic pole, the core 15a, and the first magnet magnetic pole whose circumferential positions coincide with each other. And it generate | occur | produces so that the 1st armature magnetic pole, the core 15a, and the 1st magnet magnetic pole which adjoin each each circumferential both sides of these 1st armature magnetic poles, the core 15a, and the 1st magnet magnetic pole may be tied. In this state, since the magnetic lines of force ML are linear, no magnetic force that rotates in the circumferential direction acts on the permanent magnet 14a.

  When the first armature magnetic pole rotates from the position shown in FIG. 11 (a) to the position shown in FIG. 11 (b) along with the rotation of the first rotating magnetic field, the magnetic field lines ML are bent, and accordingly, A magnetic force acts on the permanent magnet 14a so that the magnetic lines of force ML are linear. In this case, since the permanent magnet 14a is in a position advanced in the magnetic field rotation direction from the extension line of the first armature magnetic pole and the core 15a connected to each other by the magnetic force line ML, the magnetic force is permanent on the extension line. It acts to position the magnet 14a, that is, to drive the permanent magnet 14a in the direction opposite to the magnetic field rotation direction. The permanent magnet 14a is driven in the direction opposite to the magnetic field rotation direction by the action of the magnetic force due to the magnetic lines of force ML, and rotates to the position shown in FIG. 11C, and the first rotor 14 provided with the permanent magnet 14a is also used. Rotate in the direction opposite to the magnetic field rotation direction.

  Further, as the first rotating magnetic field further rotates, the above-described series of operations, that is, “the magnetic field line ML is bent and is more permanent than the extension line of the first armature magnetic pole and the core 15a connected to each other by the magnetic field line ML. The magnet 14a is located at a position advanced in the magnetic field rotation direction. The magnetic force acts on the permanent magnet 14a so that the magnetic field lines ML are linear. The permanent magnet 14a and the first rotor 14 rotate in the direction opposite to the magnetic field rotation direction. The operation of “doing” is repeatedly performed as shown in FIGS. 12A to 12D and FIGS. 13A and 13B. As described above, when electric power is supplied to the first stator 13 while the second rotor 15 is held in a non-rotatable state, the electric power is supplied to the first stator 13 by the action of the magnetic force due to the magnetic force lines ML as described above. The generated electric power is converted into power, and the power is output from the first rotor 14.

  FIG. 13B shows a state in which the first armature magnetic pole has been rotated by an electrical angle of 2π from the state of FIG. 11A, and is clear from a comparison between FIG. 13B and FIG. Thus, it can be seen that the permanent magnet 14a rotates in the opposite direction by a half rotation angle with respect to the first armature magnetic pole. This result agrees with the fact that −ωER1 = ωMFR / 2 is obtained by setting ωER2 = 0 in the equation (40).

  14 and 15 set the numbers of the first armature magnetic poles, the cores 15a and the permanent magnets 14a to the value 16, the value 18 and the value 20, respectively, and hold the first rotor 14 so as not to rotate. A simulation result in the case where power is output from the second rotor 15 by supplying electric power to the first stator 13 is shown. FIG. 14 shows an example of the transition of the U-phase to W-phase back electromotive voltages Vcu to Vcw while the second rotor electrical angle θER2 changes from 0 to 2π.

  In this case, the first rotor 14 is held non-rotatable, the number of pole pairs of the first armature magnetic pole and the first magnet magnetic pole is 8 and 10 respectively, and from the above equation (25), The relationship between the first magnetic field electrical angular velocity ωMFR and the first and second rotor electrical angular velocities ωER1 and ωER2 is expressed by ωMFR = 2.25 · ωER2. As shown in FIG. 14, while the second rotor electrical angle θER2 changes from 0 to 2π, the U-phase to W-phase counter electromotive voltages Vcu to Vcw are generated for approximately 2.25 cycles. FIG. 14 shows a change state of the U-phase to W-phase back electromotive voltages Vcu to Vcw as viewed from the second rotor 15, and as shown in FIG. With the angle θER2 as a horizontal axis, the W-phase counter electromotive voltage Vcw, the V-phase counter electromotive voltage Vcv, and the U-phase counter electromotive voltage Vcu are arranged in this order, which means that the second rotor 15 rotates in the magnetic field rotation direction. Represents that. The above simulation results shown in FIG. 14 agree with the relationship of ωMFR = 2.25 · ωER2 based on the above-described equation (25).

  Further, FIG. 15 shows an example of transitions of the first driving equivalent torque TSE1, the first and second rotor transmission torques TR1 and TR2. In this case, the number of pole pairs of the first armature magnetic pole and the first magnet magnetic pole is 8 and 10, respectively, and from the above equation (32), the first driving equivalent torque TSE1, the first and second rotor transmissions The relationship between the torques TR1 and TR2 is expressed by TSE1 = TR1 / 1.25 = −TR2 / 2.25. As shown in FIG. 15, the first driving equivalent torque TSE1 is approximately −TREF, the first rotor transmission torque TR1 is approximately 1.25 · (−TREF), and the second rotor transmission torque TR2 is approximately 2 .25 · TREF. This TREF is a predetermined torque value (for example, 200 Nm). Such a simulation result shown in FIG. 15 agrees with the relationship of TSE1 = TR1 / 1.25 = −TR2 / 2.25 based on the above-described equation (32).

  16 and 17 set the number of first armature magnetic poles, cores 15a and permanent magnets 14a in the same manner as in FIGS. 14 and 15, and rotate the second rotor 15 instead of the first rotor 14. The simulation results are shown in the case where the power is output from the first rotor 14 by the power supply to the first stator 13 while being held impossible. FIG. 16 shows an example of the transition of the U-phase to W-phase back electromotive voltages Vcu to Vcw while the first rotor electrical angle θER1 changes from 0 to 2π.

  In this case, the second rotor 15 is held non-rotatable, the number of pole pairs of the first armature magnetic pole and the first magnet magnetic pole is 8 and 10, respectively, and from the equation (25), The relationship between the first magnetic field electrical angular velocity ωMFR and the first and second rotor electrical angular velocities ωER1 and ωER2 is represented by ωMFR = −1.25 · ωER1. As shown in FIG. 16, while the first rotor electrical angle θER1 changes from 0 to 2π, the U-phase to W-phase counter electromotive voltages Vcu to Vcw are generated for approximately 1.25 cycles. FIG. 16 shows a change state of the U-phase to W-phase back electromotive voltages Vcu to Vcw as viewed from the first rotor 14, and as shown in FIG. With the angle θER1 as the horizontal axis, the U-phase counter electromotive voltage Vcu, the V-phase counter electromotive voltage Vcv, and the W-phase counter electromotive voltage Vcw are arranged in this order, which means that the first rotor 14 rotates in the direction opposite to the magnetic field rotation direction. Represents that you are doing. The simulation result shown in FIG. 16 as described above agrees with the relationship of ωMFR = −1.25 · ωER1 based on the above-described equation (25).

  Further, FIG. 17 shows an example of transition of the first driving equivalent torque TSE1, the first and second rotor transmission torques TR1 and TR2. Also in this case, as in the case of FIG. 15, from the equation (32), the relationship between the first driving equivalent torque TSE1 and the first and second rotor transmission torques TR1 and TR2 is TSE1 = TR1 / 1.25. = −TR2 / 2.25 As shown in FIG. 17, the first driving equivalent torque TSE1 is approximately TREF, the first rotor transmission torque TR1 is approximately 1.25 · TREF, and the second rotor transmission torque TR2 is approximately −2.25 ·. It is TREF. Such a simulation result shown in FIG. 17 agrees with the relationship of TSE1 = TR1 / 1.25 = −TR2 / 2.25 based on the above equation (32).

  As described above, in the first rotating machine 11, when the first rotating magnetic field is generated by supplying power to the first stator 13, the magnetic field lines connecting the first magnet magnetic pole, the core 15a, and the first armature magnetic pole described above. ML is generated, and the electric power supplied to the first stator 13 is converted into power by the action of the magnetic force generated by the magnetic field lines ML, and the power is output from the first rotor 14 and the second rotor 15. In this case, the relationship represented by the above equation (40) is established between the first magnetic field electrical angular velocity ωMFR and the first and second rotor electrical angular velocities ωER1 and ωER2, and the first driving equivalent torque TSE1, the first and first The relationship shown in the equation (41) is established between the two rotor transmission torques TR1 and TR2.

  For this reason, when power is not supplied to the first stator 13, power is input to at least one of the first and second rotors 14 and 15 to rotate at least one of the first stator 13 and the first stator 13. In the first stator 13, power generation is performed and a first rotating magnetic field is generated. In this case as well, a magnetic force line ML that connects the first magnet magnetic pole, the core 15 a, and the first armature magnetic pole is generated. The relationship between the electrical angular velocity shown in the equation (40) and the torque shown in the equation (41) is established by the action of the magnetic force generated by the magnetic field lines ML.

  That is, assuming that the generated power and the torque equivalent to the first magnetic field electric angular velocity ωMFR are the first power generation equivalent torque TGE1, the first power generation equivalent torque TGE1, the first and second rotor transmission torques TR1, TR2 In addition, the relationship shown in the equation (41) is established. As is apparent from the above, the first rotating machine 11 has the same function as an apparatus that combines a planetary gear device and a general one-rotor type rotating machine.

  Further, the ECU 2 controls the first PDU 41 and the VCU 43 to thereby control the current supplied to the first stator 13, the current generated by the first stator 13, and the rotation speed of the first rotating magnetic field (hereinafter “first magnetic field rotation”). NMF1 is controlled.

  As shown in FIG. 1, the second rotating machine 21 described above is a general brushless DC motor, and has a stationary stator 22 and a rotatable rotor 23. The stator 22 is composed of a three-phase coil or the like, and is fixed to the case CA. As shown in FIG. 3, the stator 22 is electrically connected to the main battery 44 via a second power drive unit (hereinafter referred to as “second PDU”) 42 and the VCU 43 described above. Further, the rotor 23 is composed of a plurality of magnets and the like, and is disposed so as to face the stator 22.

  Similar to the first PDU 41 described above, the second PDU 42 is configured by an electric circuit such as an inverter, and outputs the DC power supplied from the main battery 44 to the stator 22 in a state where the DC power is converted into three-phase AC power. Further, the second PDU 42 is electrically connected to the first PDU 41, whereby the first stator 13 of the first rotating machine 11 and the stator 22 of the second rotating machine 21 are connected via the first and second PDUs 41 and 42. Are electrically connected to each other. Further, the second PDU 42 is electrically connected to the ECU 2 (see FIG. 2). In addition, the VCU 43 outputs the power from the main battery 44 to the second PDU 42 while boosting the power, and outputs the power from the second PDU 42 to the main battery 44 while reducing the power.

  In the second rotating machine 21 configured as described above, when electric power is supplied from the main battery 44 to the stator 22 via the VCU 43 and the second PDU 42, the supplied electric power is converted into power and output from the rotor 23. When power is not supplied to the stator 22 and power is input to the rotor 23 and the rotor 23 rotates with respect to the stator 22, the power input to the rotor 23 is converted into power in the stator 22 ( Power generation) and output from the stator 22. The ECU 2 controls the second PDU 42 and the VCU 43, thereby controlling the current supplied to the stator 22, the current generated by the stator 22, and the rotational speed of the rotor 23 (hereinafter referred to as “second rotating machine rotational speed”) NM2. To do.

  Further, the rotor 23 is provided integrally with the second rotating shaft 5 described above, whereby the rotor 23 is directly connected coaxially to the first rotor 14 of the first rotating machine 11. Further, a gear G1 is integrally provided on the second rotating shaft 5.

  The differential device DG described above is for distributing power to the left and right drive wheels DW, DW, and a plurality of left and right side gears DS, DS having the same number of teeth and a plurality of gears meshing with both gears DS, DS. It has a pinion gear DP and a differential case DC that rotatably supports these pinion gears DP. The left and right side gears DS, DS are connected to the left and right drive wheels DW, DW via left and right axles 6, 6, respectively.

  In the differential device DS configured as described above, the power transmitted to the differential case DC is distributed to the left and right side gears DS and DS via the pinion gear DP, and further, the left and right drive via the left and right axles 6 and 6. It is distributed to the wheels DW and DW. Further, the differential case DC is integrally provided with a gear G2, and the gear G2 meshes with the gear G1 described above via an intermediate gear G3.

  The vehicle is also equipped with a compressor 51 for compressing the refrigerant of the air conditioner. The compressor 51 has an input shaft 52 and is driven when power is transmitted to the input shaft 52. A second pulley PU2 is directly connected to the input shaft 52 via a clutch CL. The second pulley PU2 and the first pulley PU1 provided on the first rotating shaft 4 are connected to a belt. BE is wound. The clutch CL is an electromagnetic clutch, and is connected / disconnected between the input shaft 52 and the second pulley PU2 by being engaged / released under the control of the ECU 2.

  As described above, in the power unit 1, the second rotor 15 of the first rotating machine 11 is mechanically connected to the crankshaft 3a. The compressor 51 is mechanically connected to the crankshaft 3a through the clutch CL. Further, the first rotor 14 of the first rotating machine 11 and the rotor 23 of the second rotating machine 21 are mechanically connected to each other, and are connected via the gear G1, the gear G3, the differential device DG, and the axles 6 and 6. And mechanically connected to the drive wheels DW and DW.

  As shown in FIG. 2, a crank angle sensor 61 and a first rotation angle sensor 62 are electrically connected to the ECU 2. The crank angle sensor 61 detects the rotational angle position of the crankshaft 3a and outputs a detection signal to the ECU 2. The ECU 2 calculates the engine speed (hereinafter referred to as “engine speed”) NE of the engine 3 based on the detected rotational angle position of the crankshaft 3a. Further, since the second rotor 15 is directly connected to the crankshaft 3a as described above, the ECU 2 determines the rotation angle of the second rotor 15 relative to the first stator 13 based on the detected rotation angle position of the crankshaft 3a. While calculating the position, the rotational speed (hereinafter referred to as “second rotor rotational speed”) NR2 of the second rotor 15 is calculated.

  The first rotation angle sensor 62 detects the rotation angle position of the first rotor 14 with respect to the first stator 13 and outputs a detection signal to the ECU 2. The ECU 2 calculates the rotational speed (hereinafter referred to as “first rotor rotational speed”) NR1 of the first rotor 14 based on the detected rotational angular position of the first rotor 14. Further, since the first rotor 14 and the rotor 23 are directly connected to each other as described above, the ECU 2 calculates the rotation angle position of the rotor 23 relative to the stator 22 based on the detected rotation angle position of the first rotor 14. At the same time, the second rotation machine rotation speed NM2 (rotation speed of the rotor 23) is calculated.

  Further, a detection signal indicating the rotational speed of the drive wheels DW, DW (hereinafter referred to as “drive wheel rotational speed”) NDW is input / output from the current voltage sensor 64 to the main battery 44 in the ECU 2. Detection signals representing current and voltage values are output. The ECU 2 calculates the state of charge of the main battery 44 based on the detection signal from the current / voltage sensor 64. Further, the vehicle is provided with an ignition switch (hereinafter referred to as “IG / SW”) 65, and the IG / SW 65 is a signal indicating an ON / OFF state in response to an operation of an ignition key (not shown). Is output to the ECU 2.

  The ECU 2 is composed of a microcomputer including an I / O interface, CPU, RAM, ROM, and the like. The ECU 2 performs the clutch CL, the engine 3, the starter 31, the first and second rotating machines 11 and 21 in accordance with the control program stored in the ROM in accordance with the above-described various sensors and detection signals from the switches 61 to 65. To control the operation. As a result, the vehicle is driven in various driving modes.

  These operation modes include a stationary ENG start mode. This stationary ENG start mode is an operation mode in which the engine 3 is started while the vehicle is stopped, and includes a first start mode and a second start mode. Hereinafter, these first and second start modes will be described in order.

[First start mode]
FIG. 18 shows a process for performing control in the first start mode (hereinafter referred to as “first start mode control process”). This process is executed when the calculated charge state of the main battery 44 is within a predetermined range when the ON signal is output from the IG / SW 65 described above while the vehicle is stopped. This predetermined range is defined by a first predetermined value and a second predetermined value, and this first predetermined value is the lowest charged state that can drive the crankshaft 3a in a stopped state, for example, 20%. Is set. The second predetermined value is a predetermined charging state in which the power of the main battery 44 is insufficient when the driving wheels DW and DW are driven using the second rotating machine 21 without using the engine 3, A predetermined value larger than the first predetermined value, for example, 30% is set.

  First, in step 1 of FIG. 18 (illustrated as “S1”, the same applies hereinafter), the clutch CL is released, and thereby the input shaft 52 of the compressor 51 and the second pulley PU2 are disconnected. Next, the operation of the first rotating machine 11 is controlled as follows (step 2). That is, electric power is supplied from the main battery 44 to the first stator 13 to cause the first rotating magnetic field to rotate forward and to control the current supplied to the first stator 13.

  Specifically, first, a target value TR2OBJ of the second rotor transmission torque TR2 is calculated by a predetermined feedback control algorithm so that the calculated engine speed NE becomes a predetermined start speed NEST. The starting rotation speed NEST is a predetermined rotation speed at which the engine 3 can be started, and is set to a predetermined rotation speed within a range of 500 to 700 rpm, for example. Next, the current supplied to the first stator 13 is controlled so that the second rotor transmission torque TR2 becomes the calculated target value TR2OBJ. Thus, the first driving equivalent torque TSE1 is generated, and the generated first driving equivalent torque TSE1 acts so as to cause the second rotor 15 and the crankshaft 3a to rotate forward, and the second rotor transmission torque TR2 is generated. Control is performed so that the target value TR2OBJ is obtained.

In Step 3 following Step 2, the operation of the second rotating machine 21 is controlled as follows. That is, first, the target value TM2OBJ of the output torque of the second rotating machine 21 is calculated by the following equation (42). Next, electric power is supplied from the main battery 44 to the stator 22, and the current supplied to the stator 22 is controlled so that a torque corresponding to the target value TM2OBJ acts on the rotor 23 in the normal rotation direction.
TM2OBJ = α ・ TR2OBJ / (1 + α) (42)

  In Step 4 following Step 3, the engine 3 in a stopped state is started by controlling the ignition operation of the fuel injection valve 3b and the spark plug 3c of the engine 3, and the present process is terminated.

  Next, an operation example of the first start mode control process described above will be described with reference to FIG. First, FIG. 19 will be described. As is apparent from the connection relationship between the various rotary elements described above in the power unit 1, the engine speed NE and the second rotor speed NR2 are equal to each other, and the first rotor speed NR1 and the second rotating machine speed are the same. NM2 are equal to each other. Further, if the shift by the gear G1 or the differential device DG is ignored, the first rotor rotational speed NR1 and the second rotating machine rotational speed NM2 are equal to the drive wheel rotational speed NDW. Further, the first magnetic field rotation speed NMF1, the first and second rotor rotation speeds NR1 and NR2 are in a predetermined collinear relationship as expressed by the equation (40).

  From the above, the relationship among the first magnetic field rotational speed NMF1, the engine rotational speed NE, the drive wheel rotational speed NDW, and the second rotating machine rotational speed NM2 is represented by a speed collinear chart as shown in FIG. In FIG. 19 and other velocity collinear charts described later, as in the velocity collinear chart of FIG. 6 described above, the distance from the horizontal line indicating the value 0 to the white circle on the vertical line is indicated at the upper and lower ends of the vertical line. For the sake of convenience, a symbol representing the number of rotations of each rotation element is written in the vicinity of the white circle. In FIG. 19, TEF is the friction of the engine 3 acting on the crankshaft 3a (hereinafter referred to as “engine friction”), and TM2 is the second acting on the rotor 23 as power is supplied to the stator 22. This is the output torque of the rotating machine 21 (hereinafter referred to as “second power running torque”).

  As is apparent from FIG. 19, the first driving equivalent torque TSE1 is transmitted to the second rotor 15 and the crankshaft 3a using the second power running torque TM2 as a reaction force, whereby both 15,3a are driven, Rotate forward. In this case, the current supplied to the first stator 13 is controlled so that the second rotor transmission torque TR2 becomes the target value TR2OBJ, so that the engine speed NE becomes the starting speed NEST. Feedback controlled. In this state, the engine 3 is started.

  As is clear from FIG. 19, the first driving equivalent torque TSE1 acts to reverse the first rotor 14, the rotor 23, and the driving wheels DW and DW using the engine friction TEF as a reaction force. The torque acting so as to reverse the first rotor 14 and the like (hereinafter referred to as “first rotor reverse torque”) is, as is apparent from the equation (41), the second rotor transmission torque TR2 and the first pole. It is represented by -α · TR2 / (1 + α) using a logarithmic ratio α.

  On the other hand, the current supplied to the stator 22 is controlled by controlling the operation of the second rotating machine 21 described above so that the torque corresponding to the target value TM2OBJ acts on the rotor 23 in the forward rotation direction. At the same time, the target value TM2OBJ is calculated by the equation (42), that is, TM2OBJ = α · TR2OBJ / (1 + α). As is clear from this and the fact that the first rotor reverse rotation torque is represented by -α · TR2 / (1 + α) as described above, the first rotor reverse rotation torque is canceled by the second power running torque TM2, The drive wheels DW and DW are held in a stationary state (NDW = 0).

[Second start mode]
FIG. 20 shows a process for performing control in the second start mode (hereinafter referred to as “second start mode control process”). This process is executed when the ON state signal is output from the IG / SW 65 while the vehicle is stopped and the state of charge of the main battery 44 is below the predetermined range described above. As a result, the second start mode is selected when the crankshaft 3a cannot be appropriately driven by supplying power from the main battery 44 to the first rotating machine 11.

  First, in Step 11 of FIG. 20, as in Step 1, the clutch CL is released, so that the input shaft 52 of the compressor 51 and the second pulley PU2 are disconnected. Next, the starter 31 is operated by supplying power from the auxiliary battery 33 to the starter 31 (step 12). Thereby, the crankshaft 3a is driven and rotates forward.

  Next, the operation of the second rotating machine 21 is controlled as follows (step 13). That is, first, the target value TM2OBJ of the second power running torque TM2 is calculated by a predetermined feedback control algorithm so that the calculated driving wheel rotational speed NDW becomes 0. Next, electric power is supplied from the main battery 44 to the stator 22, and the current supplied to the stator 22 is controlled so that a torque corresponding to the target value TM2OBJ acts on the rotor 23. In this case, since the electric power supplied from the main battery 44 to the stator 22 is smaller than the electric power required to drive the crankshaft 3a, the charged state of the main battery 44 falls below a predetermined range as described above. Even in this case, the control of the operation of the second rotating machine 21 in step 13 described above can be performed without hindrance.

  In step 14 following step 13, the engine 3 in a stopped state is started by controlling the ignition operation of the fuel injection valve 3b and the spark plug 3c, and this process is terminated. In this process, the operation of the first rotating machine 11 is not controlled.

  Next, an operation example of the above-described second start mode control process will be described with reference to FIG. In the figure, TST is the output torque of the starter 31. As shown in FIG. 21, the crankshaft 3a is rotated forward by being driven by the starter 31, and the engine rotational speed NE exceeds the aforementioned starting rotational speed NEST. In this state, the engine 3 is started by executing step 14.

  In this case, as the crankshaft 3a rotates as described above, and the second rotor 15 rotates, the first rotating magnetic field is generated in the first stator 13 even if power supply and power generation are not performed. Occur. As a result, by using the rotational resistance due to the first rotating magnetic field as a reaction force, a part of the torque TST of the starter 31 causes the drive wheels DW and DW to rotate forward via the second and first rotors 15 and 14. Works. In FIG. 21, DMF 1 is a rotational resistance (hereinafter referred to as “first magnetic field rotational resistance”) due to the first rotational magnetic field.

  On the other hand, the second power running torque TM2 is controlled such that the drive wheel rotational speed NDW becomes 0 by controlling the operation of the second rotating machine 21 described above. As a result, the second power running torque TM2 acts to cancel the torque acting on the drive wheels DW and DW due to the first magnetic field rotation resistance DMF1, and as a result, the drive wheels DW and DW are stationary. (NDW = 0).

  FIG. 22 shows a modification of the second start mode control process shown in FIG. 20 described above. This process differs from the process of FIG. 20 only in that step 15 is executed instead of step 13, and specifically, the first rotating machine 11 instead of the second rotating machine 21. The only difference is in controlling the operation. For this reason, the following description will focus on this difference, and steps having the same execution content will be denoted by the same step numbers and description thereof will be omitted.

  In step 15 of FIG. 22 following step 12, the operation of the first rotating machine 11 is controlled as follows. That is, power is supplied from the main battery 44 to the first stator 13 to cause the first rotating magnetic field to rotate forward, and the current supplied to the first stator 13 is converted into the first magnetic field described above by the first driving equivalent torque TSE1. Control is made to be equal to the rotational resistance DMF1. Next, step 14 and subsequent steps are executed. In this case, since the power supplied from the main battery 44 to the first stator 13 is smaller than the power required to drive the crankshaft 3a, the state of charge of the main battery 44 is within a predetermined range as described above. Even if it is less than the above, it is possible to control the operation of the first rotating machine 11 in step 15 described above without any trouble. In this process, the operation of the second rotating machine 21 is not controlled.

  Next, an operation example of a modified example of the second start mode control process described above will be described with reference to FIG. As shown in the figure, as in the case of FIG. 21 described above, the crankshaft 3a is rotated forward by being driven by the starter 31, and the engine rotational speed NE exceeds the starting rotational speed NEST. In this state, the engine 3 is started.

  In this case, by controlling the operation of the first rotating machine 11 described above, the first driving equivalent torque TSE1 is controlled to be equal to the first magnetic field rotating resistance DMF1 described above, thereby the first magnetic field rotating resistance DMF1. Is offset. Thereby, a part of the torque TST of the starter 31 is not transmitted to the drive wheels DW and DW by using the first magnetic field rotation resistance DMF1 as a reaction force, and as a result, the drive wheels DW and DW are in a stationary state (NDW = 0) ).

  Note that the charging state of the auxiliary battery 33 is always maintained at a relatively large value by charging with a generator (not shown) using the power of the engine 3 or the like, so that the second start mode control process ( It is possible to reliably start the engine 3 using the starter 31 according to the modified example).

  Moreover, 1st Embodiment described so far respond | corresponds to the invention which concerns on Claims 1-4 described in the claim, Various elements in 1st Embodiment, Claims 1-, and Correspondences with various elements in the invention according to No. 4 (hereinafter collectively referred to as “first invention”) are as follows. That is, the drive wheels DW and DW and the engine 3 in the first embodiment correspond to the driven part and the heat engine in the first invention, respectively, and the ECU 2, the VCU 43, the first and second PDUs 41 and 42 in the first embodiment This corresponds to the control device in the first invention. The crankshaft 3a in the first embodiment corresponds to the output section in the first invention, and the permanent magnet 14a and the core 15a in the first embodiment correspond to the magnetic pole and the soft magnetic body in the first invention, respectively. Further, the first stator 13 in the first embodiment corresponds to the stator in the first invention, and the iron core 13a and the U-phase to W-phase coils 13c to 13e in the first embodiment are armature arrays in the first invention. It corresponds to.

  The compressor 51 in the first embodiment corresponds to the auxiliary machine in the invention according to claim 4, and the clutch CL and the ECU 2 in the first embodiment correspond to power transmission limiting means in the invention in accordance with claim 4. .

  As described above, according to the first embodiment, the first rotating machine 11 can be operated only by a single first soft magnetic material row, and thus the first rotating machine 11 can be downsized and the manufacturing cost can be reduced. As a result, the power unit 1 can be reduced in size and the manufacturing cost can be reduced. Further, by setting the first pole pair number ratio α, the relationship between the first magnetic field rotational speed NMF1, the first and second rotor rotational speeds NR1 and NR2, and the first driving equivalent torque TSE1 (for the first power generation) The relationship between the equivalent torque TGE1) and the first and second rotor transmission torques TR1 and TR2 can be freely set. Therefore, the degree of freedom in designing the first rotating machine 11 can be increased. The degree of design freedom can be increased.

  Furthermore, when starting the engine 3, the crankshaft 3a is driven by controlling the operation of the first rotating machine 11 by the first start mode control process, so that the engine 3 can be started appropriately. In this case, since the driving wheels DW and DW are held stationary by controlling the operation of the second rotating machine 21, the speed fluctuations of the driving wheels DW and DW caused by the transmission of the driving force to the crankshaft 3a are reduced. It can prevent and can improve merchantability.

  Further, when starting the engine 3, the crankshaft 3a is driven by operating the starter 31 by the second start mode control process (including the modified example), so that the engine 3 can be started appropriately. In this case, in the second start mode control process, since the drive wheels DW and DW are held stationary by controlling the operation of the second rotating machine 21, fluctuations in the speed of the drive wheels DW and DW can be prevented. Can be improved. Also in the modified example of the second start mode control process, the driving wheels DW and DW are held stationary by controlling the operation of the first rotating machine 21, so that the driving force is transmitted to the crankshaft 3a. The resulting fluctuations in the speed of the drive wheels DW and DW can be prevented, and the merchantability can be improved. Further, when the engine 3 is started, when the state of charge of the main battery 44 is below a predetermined range, the crankshaft 3a is driven using the starter 31 as described above, and the starter 31 is a power source. The charged state of the auxiliary battery 33 is always kept at a relatively large value. As described above, even when the crankshaft 3a cannot be driven properly by supplying power from the main battery 44 to the first rotating machine 11, the engine 3 can be started properly.

  Further, when the engine 3 is started, the clutch CL is released to disconnect the input shaft 52 of the compressor 51 from the crankshaft 3a, so that the transmission of the driving force to the compressor 51 causes the crankshaft 3a to actually It is possible to prevent the transmitted driving force from becoming small. Therefore, the crankshaft 3a can be driven appropriately, and thus the engine 3 can be started properly. For the same reason, the crankshaft 3a can be appropriately driven by the first rotating machine 11 and the starter 31 even when the charged states of the main battery 44 and the auxiliary battery 33 are relatively small.

  Further, during the execution of the second start mode control process, as is apparent from the torque relationship shown in FIG. 21, the reaction force based on the first magnetic field rotation resistance DMF1 is applied to the starter 31 in addition to the engine friction TEF. Act. For this reason, the torque TST of the starter 31 required for starting the engine 3 is increased accordingly, and as a result, the starter 31 may be increased in size. On the other hand, since the first magnetic field rotation resistance DMF1 is canceled by controlling the operation of the first rotating machine 11 during the execution of the modified example of the second start mode control process, the starter 31 includes the engine Only the friction TEF acts. Therefore, the increase in the size of the starter 31 described above can be avoided.

  In the first embodiment, the second rotor 15 is directly connected to the crankshaft 3a, but may be mechanically connected via a gear, a pulley, a chain, a transmission, or the like. In the first embodiment, the first rotor 14 and the rotor 23 are directly connected to each other. However, the first rotor 14 and the rotor 23 may not be directly connected to each other as long as they are mechanically connected to the drive wheels DW and DW. Furthermore, in the first embodiment, the first rotor 14 and the rotor 23 are coupled to the drive wheels DW and DW via the differential device DG or the like, but may be mechanically coupled directly.

  Further, as is apparent from the above-described connection relationship, the power unit 1 stops the engine 3 and does not generate the output of the engine 3, and uses only the second rotating machine 21 as a power source to drive the drive wheels DW and DW. The vehicle can be driven and driven. Hereinafter, such traveling of the vehicle is referred to as “EV traveling”. Further, even during the EV traveling, by controlling the operation of the starter 31, the first rotating machine 11, and the second rotating machine 21, the driving wheel rotational speed NDW resulting from the transmission of the driving force to the crankshaft 3 a can be reduced. With the fluctuation suppressed, the crankshaft 3a can be driven and the engine 3 can be started. Hereinafter, in this case, control of the operations of the first and second rotating machines 11 and 21 when the crankshaft 3a is driven using the first rotating machine 11 will be briefly described.

  That is, by supplying the power of the main battery 44 to the stator 22 and causing the rotor 23 to rotate forward, the second power running torque TM2 is transmitted to the drive wheels DW and DW, and as a result, the drive wheels DW and DW rotate forward. The EV traveling is performed as described above. In order to drive the crankshaft 3 a by controlling the operation of the first rotating machine 11 during EV traveling, the first stator 13 is used by using a part of the power transmitted from the rotor 23 to the first rotor 14. In addition to generating power, the generated power is supplied to the stator 22. As a result, part of the power transmitted to the first rotor 14 is transmitted to the crankshaft 3a via the second rotor 15, and the crankshaft 3a rotates forward.

  In this case, the current generated by the first stator 13 is controlled so that the second rotor transmission torque TR2 becomes the target value TR2OBJ described above. Further, the current supplied to the stator 22 is controlled so that the second power running torque TM2 becomes a value obtained by adding the required torque to the target value TM2OBJ described above. This required torque is a torque required by the driver for the drive wheels DW and DW, and is calculated according to the operation amount of an accelerator pedal (not shown) of the vehicle. As described above, the crankshaft 3a can be appropriately driven while appropriately transmitting the torque equal to the required torque to the drive wheels DW and DW, and accordingly, the drive wheel rotation caused by the transmission of the driving force to the crankshaft 3a. The engine 3 can be started with the fluctuation of several NDW being suppressed.

  In addition, when starting the engine 3 during EV traveling and driving the crankshaft 3 a using the starter 31, in order to suppress fluctuations in the drive wheel rotational speed NDW by controlling the operation of the second rotating machine 21, The operation of the two-rotor 21 is controlled as follows. That is, the target value TM2OBJ is calculated by a predetermined feedback control algorithm so that the drive wheel rotational speed NDW does not change, and the current supplied to the stator 22 is set so that the second power running torque TM2 becomes the target value TM2OBJ. Control. As described above, the crankshaft 3a can be appropriately driven by the starter 31 and the engine 3 can be started in a state where fluctuations in the drive wheel rotational speed NDW due to transmission of the driving force to the crankshaft 3a are suppressed.

  Further, when the crankshaft 3 a is driven using the starter 31, in order to suppress fluctuations in the drive wheel rotational speed NDW by controlling the operation of the first rotating machine 11, the operation of the first rotating machine 11 is performed in the above step. It is controlled by the method described in FIG. Thereby, also in this case, the above-mentioned effect can be obtained similarly.

  Next, a power plant 1A according to a second embodiment of the present invention will be described with reference to FIGS. This power unit 1A is mainly different from the first embodiment in that the connection relationship between the first and second rotors 14 and 15 with respect to the engine 3 and the drive wheels DW and DW is reversed. In FIG. 24, the same components as those in the first embodiment are denoted by the same reference numerals. Hereinafter, a description will be given focusing on differences from the first embodiment.

  As shown in FIG. 24, in the power unit 1A, unlike the first embodiment, the first rotor 14 is provided integrally with the first rotating shaft 4 instead of the second rotating shaft 5 described above. Thus, the first rotor 14 is mechanically directly connected to the crankshaft 3a. Further, unlike the first embodiment, the second rotor 15 is provided integrally with the second rotation shaft 5 instead of the first rotation shaft 4. Thereby, the second rotor 15 is mechanically directly connected to the rotor 23 and mechanically connected to the drive wheels DW and DW via the differential device DG and the like.

  Further, unlike the first embodiment, the first rotation angle sensor 62 described above detects not the rotation angle position of the first rotor 14 but the rotation angle position of the second rotor 15 and outputs the detection signal to the ECU 2. . The ECU 2 calculates the second rotor rotational speed NR2 based on the detected rotational angle position of the second rotor 15. Further, the ECU 2 calculates the rotation angle position of the rotor 23 based on the detected rotation angle position of the second rotor 15 because the second rotor 15 and the rotor 23 are directly connected to each other as described above. The second rotating machine speed NM2 is calculated. Furthermore, since the first rotor 14 is directly connected to the crankshaft 3a as described above, the ECU 2 determines the first rotor 14 based on the rotational angle position of the crankshaft 3a detected by the crank angle sensor 61 described above. While calculating a rotation angle position, 1st rotor rotation speed NR1 is calculated.

  In addition, the ECU 2 performs the clutch CL, the engine 3, the starter 31, the first and second rotating machines 11 and 21 in accordance with the control program stored in the ROM in accordance with the detection signals from the various sensors and the switches 61 to 66 described above. To control the operation. As a result, as in the first embodiment, the vehicle is operated in various operation modes including the first and second start modes among the stopped ENG start modes. Hereinafter, these first and second start modes will be described in order.

[First start mode]
The first start mode control process is executed according to the flowchart shown in FIG. The execution conditions of this process are the same as those in the first embodiment. Further, this process differs from the first start mode control process of the first embodiment shown in FIG. 18 described above only in that steps 21 and 22 are executed instead of steps 2 and 3. Specifically, only the operation control of the first and second rotating machines 11 and 21 is different. For this reason, the difference will be mainly described below, and steps having the same execution contents as those in FIG. 18 will be denoted by the same step numbers and description thereof will be omitted.

  In Step 21 of FIG. 25 following Step 1, the operation of the first rotating machine 11 is controlled as follows. That is, power is supplied from the main battery 44 to the first stator 13 to reverse the first rotating magnetic field and to control the current supplied to the first stator 13.

  Specifically, first, the target value TR1OBJ of the first rotor transmission torque TR1 is calculated by a predetermined feedback control algorithm so that the engine speed NE becomes the above-described start speed NEST. Next, the current supplied to the first stator 13 is controlled so that the first rotor transmission torque TR1 becomes the calculated target value TR1OBJ. As a result, the first driving equivalent torque TSE1 is generated, and the generated first driving equivalent torque TSE1 acts to cause the first rotor 14 and the crankshaft 3a to rotate forward, and the first rotor transmission torque TR1 is Control is performed to achieve the target value TR1OBJ.

In step 22 following step 21, the operation of the second rotating machine 21 is controlled to execute step 4 and subsequent steps. In this case, the operation of the second rotating machine 21 is controlled as follows. That is, first, the target value TM2OBJ of the output torque of the second rotating machine 21 is calculated by the following equation (43). Next, electric power is supplied from the main battery 44 to the stator 22, and the current supplied to the stator 22 is controlled so that a torque corresponding to the target value TM2OBJ acts on the rotor 23 in the normal rotation direction.
TM2OBJ = (α + 1) TR1OBJ / α (43)

  Next, an operation example of the first start mode control process described above will be described with reference to FIG. First, FIG. 26 will be described. As is clear from the connection relationship between the various rotary elements described above in the power unit 1A, the engine speed NE and the first rotor speed NR1 are equal to each other, and the second rotor speed NR2 and the second rotating machine speed are the same. NM2 are equal to each other. If the shift by the gear G1 or the differential device DG is ignored, the second rotor rotational speed NR2 and the second rotating machine rotational speed NM2 are equal to the drive wheel rotational speed NDW. Further, the first magnetic field rotation speed NMF1, the first and second rotor rotation speeds NR1 and NR2 are in a predetermined collinear relationship as expressed by the equation (40). From the above, the relationship among the first magnetic field rotational speed NMF1, the engine rotational speed NE, the drive wheel rotational speed NDW, and the second rotating machine rotational speed NM2 is represented by a speed collinear chart as shown in FIG.

  As is apparent from FIG. 26, the first driving equivalent torque TSE1 is transmitted to the first rotor 14 and the crankshaft 3a using the second power running torque TM2 as a reaction force, thereby driving both 14, 3a, Rotate forward. In this case, the current supplied to the first stator 13 is controlled so that the first rotor transmission torque TR1 becomes the target value TR1OBJ, so that the engine speed NE becomes the starting speed NEST. Feedback controlled. In this state, the engine 3 is started.

  As is clear from FIG. 26, the first driving equivalent torque TSE1 acts to reverse the second rotor 15, the rotor 23, and the driving wheels DW and DW using the engine friction TEF as a reaction force. The torque acting so as to reverse the second rotor 15 or the like (hereinafter referred to as “second rotor reverse torque”) is, as is apparent from the equation (41), the first rotor transmission torque TR1 and the first pole. It is represented by-(α + 1) TR1 / α using a logarithmic ratio α.

  On the other hand, the current supplied to the stator 22 is controlled by controlling the operation of the second rotating machine 21 described above so that the torque corresponding to the target value TM2OBJ acts on the rotor 23 in the forward rotation direction. At the same time, the target value TM2OBJ is calculated by the equation (43), that is, TM2OBJ = (α + 1) TR1OBJ / α. As is apparent from this and the fact that the second rotor reverse rotation torque is expressed by-(α + 1) TR1 / α as described above, the second rotor reverse rotation torque is offset by the second power running torque TM2, and thus the drive The wheels DW and DW are held stationary (NDW = 0).

[Second start mode]
Similar to the first embodiment, the second start mode control process is executed according to the flowchart shown in FIG. In this case, the operation in the second start mode is different from that of the first embodiment due to the difference in configuration from the first embodiment described above. Hereinafter, this point will be described with reference to FIG.

  As shown in FIG. 27, as in the first embodiment, the crankshaft 3a is rotated forward by being driven by the starter 31, and the engine rotational speed NE exceeds the starting rotational speed NEST. In this state, the engine 3 is started. In this case, as is apparent from FIG. 27, a part of the torque TST of the starter 31 is driven via the first and second rotors 14 and 15 by using the first magnetic field rotation resistance DMF1 described above as a reaction force. , DW is rotated forward.

  On the other hand, as in the first embodiment, the second power running torque TM2 is controlled such that the drive wheel rotational speed NDW has a value of zero. As a result, the torque acting on the drive wheels DW and DW due to the first magnetic field rotation resistance DMF1 is canceled by the second power running torque TM2, and as a result, the drive wheels DW and DW are stationary (NDW = 0). ).

  Further, a modified example of the second start mode control process is executed according to the flowchart shown in FIG. 22 as in the first embodiment. Hereinafter, an operation example of this processing will be described with reference to FIG. As shown in FIG. 23, as in the case of FIG. 23 described above, the crankshaft 3a is rotated forward by being driven by the starter 31, and the engine rotational speed NE exceeds the starting rotational speed NEST. In this state, the engine 3 is started.

  Further, as in the first embodiment, the operation of the first rotating machine 11 is controlled, so that the first magnetic field rotation resistance DMF1 is canceled by the first driving equivalent torque TSE1. Thereby, a part of the torque TST of the starter 31 is not transmitted to the drive wheels DW and DW by using the first magnetic field rotation resistance DMF1 as a reaction force, and as a result, the drive wheels DW and DW are in a stationary state (NDW = 0) ).

  Moreover, 2nd Embodiment described so far respond | corresponds to the invention which concerns on Claims 1-4 described in the claim, Various elements in 2nd Embodiment, Claims 1-, and Correspondences with various elements in the invention according to No. 4 are the same as those in the first embodiment.

  As described above, according to the second embodiment, the effects described above according to the first embodiment can be obtained in the same manner, such as reduction in size of the power plant 1A and reduction in manufacturing cost.

  In the second embodiment, the first rotor 14 is directly connected to the crankshaft 3a, but may be mechanically connected via a gear, a pulley, a chain, a transmission, or the like. In the second embodiment, the second rotor 15 and the rotor 23 are directly connected to each other, but may not be directly connected to each other as long as they are mechanically connected to the drive wheels DW and DW. Furthermore, in the second embodiment, the second rotor 15 and the rotor 23 are coupled to the drive wheels DW and DW via the differential device DG or the like, but may be mechanically coupled directly.

  Further, the power unit 1 </ b> A can cause the vehicle to travel in EV as in the first embodiment. Further, even during EV traveling, by controlling the operation of the first and second rotating machines 11 and 21, in a state where fluctuations in the drive wheel rotational speed NDW due to transmission of the driving force to the crankshaft 3a are suppressed. The engine 3 can be started. Hereinafter, in this case, control of the operations of the first and second rotating machines 11 and 21 when the crankshaft 3a is driven using the first rotating machine 11 will be briefly described.

  That is, EV traveling is performed by controlling the operation of the second rotating machine 21 as described in the first embodiment. In order to drive the crankshaft 3a by controlling the operation of the first rotating machine 11 during EV traveling, the first stator 13 generates power using a part of the power transmitted from the rotor 23 to the second rotor 15. And the generated power is supplied to the stator 22. Thereby, a part of the power transmitted to the second rotor 15 is transmitted to the crankshaft 3a via the first rotor 14, and the crankshaft 3a rotates forward. In this case, the current generated by the first stator 13 is controlled so that the first rotor transmission torque TR1 becomes the aforementioned target value TR1OBJ. Further, the current supplied to the stator 22 is controlled so that the second power running torque TM2 becomes a value obtained by adding the required torque to the target value TM2OBJ described above.

  As described above, the crankshaft 3a can be appropriately driven while appropriately transmitting the torque equal to the required torque to the drive wheels DW and DW, and accordingly, the drive wheel rotation caused by the transmission of the driving force to the crankshaft 3a. The engine 3 can be started with the fluctuation of several NDW being suppressed.

  In addition, when starting the engine 3 during EV traveling and driving the crankshaft 3 a using the starter 31, in order to suppress fluctuations in the drive wheel rotational speed NDW by controlling the operation of the second rotating machine 21, The operation of the two-rotor 21 is controlled as follows. That is, the target value TM2OBJ is calculated by a predetermined feedback control algorithm so that the drive wheel rotational speed NDW does not change, and the current supplied to the stator 22 is set so that the second power running torque TM2 becomes the target value TM2OBJ. Control. As described above, the crankshaft 3a can be appropriately driven by the starter 31 and the engine 3 can be started in a state where fluctuations in the drive wheel rotational speed NDW due to transmission of the driving force to the crankshaft 3a are suppressed.

  Further, when the crankshaft 3 a is driven using the starter 31, in order to suppress fluctuations in the drive wheel rotational speed NDW by controlling the operation of the first rotating machine 11, the operation of the first rotating machine 11 is performed in the above step. It is controlled by the method described in FIG. Thereby, also in this case, the above-mentioned effect can be obtained similarly.

  In the first and second embodiments, in the second start mode control process (including the modified example), the fluctuation of the drive wheel rotational speed NDW due to the transmission of the driving force to the crankshaft 3a is suppressed. Although the operation of one of the first and second rotating machines 11 and 21 is controlled, the operation of both the first and second rotating machines 11 and 21 may be controlled.

  Next, a power plant 1B according to a third embodiment of the present invention will be described with reference to FIGS. This power unit 1B is mainly different from the first embodiment in that it includes a second rotating machine 71 configured similarly to the first rotating machine 11 instead of the second rotating machine 21. 29 to 32, the same components as those in the first embodiment are denoted by the same reference numerals. Hereinafter, a description will be given focusing on differences from the first embodiment.

  As shown in FIG. 29, a first rotating shaft 7 is directly connected to the crankshaft 3a in a coaxial manner via a flywheel (not shown), and the first rotating shaft 7 includes bearings B1, B2. Is supported rotatably. Further, as shown in FIG. 32, the flange 15b of the second rotor 15 of the first rotating machine 11 described above is provided integrally with the first rotating shaft 7, so that it is coaxial with the crankshaft 3a. Directly connected. Further, the mounting portion 14b of the first rotor 14 of the first rotating machine 11 is provided integrally with the hollow second rotating shaft 8 via a donut plate-like flange 14d. The second rotating shaft 8 is rotatably supported by the bearing B3 and is disposed coaxially with the first rotating shaft 7, and the first rotating shaft 7 is rotatably fitted therein. ing.

  Since the second rotating machine 71 is configured in the same manner as the first rotating machine 11, its configuration and operation will be briefly described. As shown in FIGS. 29 and 33, the second rotating machine 71 is disposed between the engine 3 and the first rotating machine 11, and is provided to face the second stator 73 and the second stator 73. And a third rotor 74 and a fourth rotor 75 provided between the two rotors 73 and 74. The third rotor 74, the fourth rotor 75, and the second stator 73 are arranged coaxially with the first rotating shaft 7 described above, and are arranged in this order from the inside in the radial direction of the first rotating shaft 7. It is out.

  The second stator 73 generates a second rotating magnetic field, and includes an iron core 73a and U-phase, V-phase, and W-phase coils 73b provided on the iron core 73a. The iron core 73a has a cylindrical shape in which a plurality of steel plates are laminated, extends in the axial direction of the first rotating shaft 7, and is fixed to the case CA. In addition, twelve slots (not shown) are formed on the inner peripheral surface of the iron core 73a, and these slots extend in the axial direction of the first rotating shaft 7 and They are lined up at equal intervals in the circumferential direction. The U-phase to W-phase coil 73b is wound around the slot by distributed winding (wave winding). As shown in FIG. 31, the second stator 73 including the U-phase to W-phase coils 73b is electrically connected to the main battery 44 via the second PDU 42 and the VCU 43 described above. That is, the first and second stators 13 and 73 are electrically connected to each other via the first and second PDUs 41 and 42.

  In the second stator 73 configured as described above, when power is supplied from the main battery 44 to the U-phase to W-phase coil 73b via the VCU 43 and the second PDU 42, or when power generation is performed as described later. At the end of the iron core 73a on the third rotor 74 side, four magnetic poles are generated at equal intervals in the circumferential direction of the first rotating shaft 7, and the second rotating magnetic field by these magnetic poles rotates in the circumferential direction. . Hereinafter, the magnetic pole generated in the iron core 73a is referred to as “second armature magnetic pole”. The polarities of the two second armature magnetic poles adjacent to each other in the circumferential direction are different from each other.

  The third rotor 74 has a second magnetic pole row composed of eight permanent magnets 74a (only two are shown). These permanent magnets 74 a are arranged at equal intervals in the circumferential direction of the first rotating shaft 7, and the second magnetic pole row faces the iron core 73 a of the second stator 73. Each permanent magnet 74 a extends in the axial direction of the first rotating shaft 7, and the length in the axial direction is set to be the same as that of the iron core 73 a of the second stator 73.

  Moreover, the permanent magnet 74a is attached to the outer peripheral surface of the ring-shaped attachment part 74b. The attachment portion 74b is made of a soft magnetic material such as iron or a laminate of a plurality of steel plates, and the inner peripheral surface thereof is attached to the outer peripheral surface of the disc-shaped flange 74c. The flange 74c is provided integrally with the first rotating shaft 7 described above. As described above, the third rotor 74 including the permanent magnet 74a is directly connected coaxially to the second rotor 15 and the crankshaft 3a.

  Furthermore, since the permanent magnet 74a is attached to the outer peripheral surface of the attachment portion 74b made of a soft magnetic material as described above, each permanent magnet 74a has (N) at the end on the second stator 73 side. Or one magnetic pole of (S) appears. The polarities of the two permanent magnets 74a adjacent to each other in the circumferential direction of the first rotating shaft 7 are different from each other.

  The fourth rotor 75 has a second soft magnetic body row composed of six cores 75a (only two are shown). The cores 75a are arranged at equal intervals in the circumferential direction of the first rotating shaft 7, and the second soft magnetic body row includes the iron core 73a of the second stator 73 and the first magnetic pole row of the third rotor 74. Are arranged at predetermined intervals. Each core 75 a is formed by stacking a soft magnetic material, for example, a plurality of steel plates, and extends in the axial direction of the first rotation shaft 7. Further, the length of the core 75a in the axial direction is set to be the same as that of the iron core 73a of the second stator 73, like the permanent magnet 74a.

  Further, the end portion of the core 75a on the first rotating machine 11 side is attached to the outer end portion of the donut plate-like flange 75b via a cylindrical connecting portion 75c that slightly extends in the axial direction of the first rotating shaft 7. ing. The flange 75b is provided integrally with the second rotating shaft 8 described above. As described above, the fourth rotor 75 including the core 75a is directly connected to the first rotor 14 coaxially. The end portion of the core 75a on the engine 3 side is attached to the outer end portion of the donut plate-like flange 75d via a cylindrical connecting portion 75e that extends slightly in the axial direction of the first rotating shaft 7. A hollow first sprocket SP1 is coaxially and integrally provided on the flange 75d.

  As described above, the second rotating machine 71 includes four second armature magnetic poles, eight magnetic poles of the permanent magnet 74a (hereinafter referred to as “second magnet magnetic pole”), and six cores 75a. That is, the ratio of the number of second armature magnetic poles, the number of second magnet magnetic poles, and the number of cores 75a is equal to the number of first armature magnetic poles of the first rotating machine 11, the number of first magnet magnetic poles, and the number of cores 15a. Similar to the ratio to the number, it is set to 1: 2.0: (1 + 2.0) / 2. Further, the ratio β of the number of pole pairs of the second magnet magnetic poles to the number of pole pairs of the second armature magnetic poles is set to the value 2.0, like the first pole pair number ratio α of the first rotating machine 11. As described above, the second rotating machine 71 is configured in the same manner as the first rotating machine 11, and thus has the same function as the first rotating machine 11.

That is, the electric power supplied to the second stator 73 is converted into power and output from the third rotor 74 or the fourth rotor 75, and the power input to the third rotor 74 or the fourth rotor 75 is converted into electric power. And output from the second stator 73. Further, during the input / output of such electric power and power, the second rotating magnetic field, the third and fourth rotors 74 and 75 are collinear with respect to the rotational speed as shown in the equation (40) relating to the first rotating machine 11 described above. Rotate while maintaining the relationship. That is, in this case, the rotational speed of the second rotating magnetic field (hereinafter referred to as “second magnetic field rotational speed NMF2”), the rotational speeds of the third and fourth rotors 74 and 75 (hereinafter referred to as “third rotor rotational speed NR3”, “ (Referred to as “fourth rotor speed NR4”).
NMF2 = (β + 1) NR4-β · NR3
= 3 ・ NR4-2 ・ NR3 (44)

Further, assuming that the electric power supplied to the second stator 73 and the torque equivalent to the second magnetic field rotational speed NMF2 are the second driving equivalent torque TSE2, the second driving equivalent torque TSE2, the third and fourth rotors 74, 75 are provided. The following equation (45) is established between the torques transmitted to the motor (hereinafter referred to as “third rotor transmission torque TR3” and “fourth rotor transmission torque TR4”, respectively).
TSE2 = TR3 / β = −TR4 / (β + 1)
= TR3 / 2 = -TR4 / 3 (45)

Furthermore, assuming that the electric power generated by the second stator 73 and the torque equivalent to the second magnetic field rotational speed NMF2 are the second electric power generation equivalent torque TGE2, the second electric power generation equivalent torque TGE2, the third and fourth rotor transmission torques TR3, The following equation (46) is established between TR4. As described above, like the first rotating machine 11, the second rotating machine 71 has the same function as an apparatus combining a planetary gear device and a general one-rotor type rotating machine.
TGE2 = TR3 / β = −TR4 / (1 + β)
= TR3 / 2 = -TR4 / 3 (46)

  Further, the ECU 2 controls the second PDU 42 and the VCU 43 to control the current supplied to the second stator 73, the current generated by the second stator 73, and the second magnetic field rotation speed NMF2 of the second rotating magnetic field. .

  Further, a planetary gear device PGS is provided in the differential case DC of the differential device DG described above. This planetary gear device PGS is of a general single pinion type, and includes a sun gear PS, a ring gear PR provided on the outer periphery of the sun gear PS, a plurality of planetary gears PP meshing with both gears PS, PR, and these planetary gears. It has carrier PC which supports PP rotatably. The carrier PC is provided integrally with the differential case DC, and the ring gear PR is fixed to the case CA. The sun gear PS is integrally provided on the hollow third rotating shaft 9, and the right axle 7 is rotatably fitted inside the third rotating shaft 9. Further, a second sprocket SP2 is integrally provided on the third rotating shaft 9, and a chain CH is wound around the second sprocket SP2 and the first sprocket SP1 described above. With the above configuration, the power transmitted to the second sprocket SP2 is transmitted to the differential device DG while being decelerated by the planetary gear device PGS.

  As described above, in the power unit 1B, the second rotor 15 of the first rotating machine 11 and the third rotor 74 of the second rotating machine 71 are mechanically coupled to the crankshaft 3a. Further, the first rotor 14 of the first rotating machine 11 and the fourth rotor 75 of the second rotating machine 71 include the first sprocket SP1, the chain CH, the second sprocket SP2, the planetary gear unit PGS, the differential unit DG, and the axle. 6 and 6 are mechanically connected to the drive wheels DW and DW. Furthermore, the compressor 51 is mechanically connected to the crankshaft 3a via the clutch CL.

  Further, as shown in FIG. 30, a second rotation angle sensor 66 is electrically connected to the ECU 2, and the second rotation angle sensor 66 indicates the rotation angle position of the second rotor 15 with respect to the first stator 13. While detecting, the detection signal is output to ECU2. The ECU 2 calculates the second rotor rotational speed NR2 based on the detected rotational angle position of the second rotor 15. Further, since the third rotor 74 is directly connected to the second rotor 15, the ECU 2 determines the rotation angle position of the third rotor 74 relative to the second stator 73 based on the detected rotation angle position of the second rotor 15. While calculating, 3rd rotor rotation speed NR3 is calculated. Furthermore, since the first and fourth rotors 14 and 75 are directly connected to each other, the ECU 2 determines the second stator 73 based on the rotation angle position of the first rotor 14 detected by the first rotation angle sensor 62 described above. The rotational angle position of the fourth rotor 75 with respect to is calculated, and the fourth rotor rotational speed NR4 is calculated.

  Further, the ECU 2 operates the clutch CL, the engine 3, the starter 31, and the first and second rotating machines 11 and 71 according to the control program stored in the ROM in accordance with the detection signals from the various sensors and the switches 61 to 66. To control. As a result, as in the first embodiment, the vehicle is operated in various operation modes including the first and second start modes among the stopped ENG start modes. In this case, since the operation in these operation modes is different from that of the first embodiment due to the difference in configuration described above from the first embodiment, this point will be described below.

[First start mode]
The first start mode control process is executed according to the flowchart shown in FIG. The execution conditions of this process are the same as those in the first embodiment. Moreover, since the power unit 1B is different from the first embodiment only in that a second rotating machine 71 is provided instead of the second rotating machine 21, this processing is described above. Compared with the first start mode control process of the first embodiment shown in FIG. 18, only the operation control of the second rotating machine 71 is different, and only step 31 is executed instead of step 3. Is different. Therefore, this difference will be mainly described below. In FIG. 34, steps having the same execution contents as those in FIG. 18 are denoted by the same step numbers and description thereof is omitted.

In Step 31 of FIG. 34 following Step 2, the operation of the second rotating machine 71 is controlled as follows, and Step 4 and subsequent steps are executed. That is, first, the target value TR4OBJ of the fourth rotor transmission torque TR4 is calculated by the following equation (47). Next, power is generated by the second stator 73, and the current generated by the second stator 73 is controlled so that a torque corresponding to the target value TR4OBJ acts on the fourth rotor 75 in the forward rotation direction.
TR4OBJ = α · TR2OBJ / (1 + α) (47)

  Next, an operation example of the first start mode control process described above will be described with reference to FIG. First, FIG. 35 will be described. As is apparent from the connection relationship between the various rotary elements described above in the power unit 1B, the engine speed NE, the second and third rotor speeds NR2 and NR3 are equal to each other, and the first and fourth rotor speeds are the same. NR1 and NR4 are equal to each other. Further, if shifting by the planetary gear device PGS or the like is ignored, the first and fourth rotor rotational speeds NR1 and NR4 are equal to the drive wheel rotational speed NDW. Further, the first magnetic field rotational speed NMF1, the first and second rotor rotational speeds NR1, NR2 are in a predetermined collinear relationship as expressed by the above equation (40), and the second magnetic field rotational speed NMF2, The fourth rotor rotational speeds NR3 and NR4 are in a predetermined collinear relationship represented by the formula (44). From the above, the relationship among the first magnetic field rotational speed NMF1, the engine rotational speed NE, the drive wheel rotational speed NDW, and the second magnetic field rotational speed NMF2 is represented by a speed collinear chart as shown in FIG.

  As is apparent from FIG. 35, the first driving equivalent torque TSE1 is transmitted to the crankshaft 3a via the second rotor 15 using the second power generation equivalent torque TGE2 as a reaction force, whereby both 15,3a Is driven and rotates forward. In this case, as in the first embodiment, the engine rotational speed NE is set to the value at the time of starting by controlling the current supplied to the first stator 13 so that the second rotor transmission torque TR2 becomes the target value TR2OBJ. Feedback control is performed so that the rotation speed becomes NEST. In this state, the engine 3 is started.

  As is clear from FIG. 35, the first driving equivalent torque TSE1 acts to reverse the first rotor 14, the fourth rotor 75, and the driving wheels DW and DW using the engine friction TEF as a reaction force. The torque acting so as to reverse the first rotor 14 or the like (the first rotor reverse torque) is, as is apparent from the equation (41), the second rotor transmission torque TR2 and the first pole log ratio α. It is represented by -α · TR2 / (1 + α).

  On the other hand, the second stator 73 generates electric power so that the torque corresponding to the target value TR4OBJ acts on the fourth rotor 75 in the forward rotation direction by controlling the operation of the second rotating machine 71 described above. While the current is controlled, the target value TR4OBJ is calculated by the equation (47), that is, TR4OBJ = α · TR2OBJ / (1 + α). As is clear from this and the fact that the first rotor reverse rotation torque is represented by -α · TR2 / (1 + α) as described above, the torque acting on the fourth rotor 75 by the second power generation equivalent torque TGE2 Thus, the first rotor reverse rotation torque is canceled, and as a result, the drive wheels DW and DW are held in a stationary state (NDW = 0).

[Second start mode]
The second start mode control process is executed according to the flowchart shown in FIG. The execution conditions of this process are the same as those in the first embodiment. Further, this process is similar to the first start mode control process described above, but only controls the operation of the second rotating machine 71 as compared with the second start mode control process of the first embodiment shown in FIG. 20 described above. Only the point that step 41 is executed instead of step 13 is different. Therefore, this difference will be mainly described below. In FIG. 36, steps having the same execution contents as those in FIG. 20 are denoted by the same step numbers and description thereof is omitted.

  In Step 41 of FIG. 36 following Step 12, the operation of the second rotating machine 71 is controlled as follows, and Step 14 and subsequent steps are executed. That is, first, the target value TR4OBJ of the fourth rotor transmission torque TR4 is calculated by a predetermined feedback control algorithm so that the drive wheel rotational speed NDW becomes 0. Next, electric power is supplied from the main battery 44 to the second stator 73, and the current supplied to the second stator 73 is controlled so that a torque corresponding to the target value TR4OBJ acts on the fourth rotor 75.

  Next, an operation example of the above-described second start mode control process will be described with reference to FIG. As shown in FIG. 37, as in the first embodiment, the crankshaft 3a is rotated forward by being driven by the starter 31, and the engine rotational speed NE exceeds the starting rotational speed NEST. In this state, the engine 3 is started. In this case, as apparent from FIG. 37, the torque TST of the starter 31 is applied to the drive wheels DW and DW via the second and first rotors 15 and 14 using the first magnetic field rotation resistance DMF1 described above as a reaction force. Acts to rotate forward.

  On the other hand, by controlling the operation of the second rotating machine 71 described above, the fourth rotor transmission torque TR4 is controlled so that the drive wheel rotational speed NDW becomes zero. As a result, the torque that acts on the drive wheels DW and DW due to the first magnetic field rotation resistance DMF1 is offset by the torque that acts on the fourth rotor 75 by the second drive equivalent torque TSE2, and as a result, the drive The wheels DW and DW are held stationary (NDW = 0).

  Moreover, 3rd Embodiment described so far respond | corresponds to the invention which concerns on Claims 5-8 described in the claim, The various elements in 3rd Embodiment, and Claims 5-5. Correspondences with various elements in the invention according to No. 8 (hereinafter collectively referred to as “second invention”) are as follows. That is, the drive wheels DW and DW and the engine 3 in the third embodiment correspond to the driven part and the heat engine in the second invention, respectively. The ECU 2, the VCU 43, the first and second PDUs 41 and 42 in the third embodiment are While corresponding to the control device in the second invention, the crankshaft 3a in the third embodiment corresponds to the output section in the second invention.

  Further, the permanent magnet 14a, the core 15a, the permanent magnet 74a, and the core 75a in the third embodiment correspond to the first magnetic pole, the first soft magnetic body, the second magnetic pole, and the second soft magnetic body in the second invention, respectively. Furthermore, the iron core 13a and the U-phase to W-phase coils 13c to 13e in the third embodiment correspond to the first armature array in the second invention, and the iron core 73a and the U-phase to W-phase in the third embodiment. The coil 73b corresponds to the second armature row in the second invention.

  Further, the compressor 51 in the third embodiment corresponds to the auxiliary machine in the invention according to claim 8, and the clutch CL and the ECU 2 in the third embodiment correspond to power transmission limiting means in the invention according to claim 8. .

  As described above, according to the third embodiment, since the first and second rotating machines 11 and 71 are used, the size of the power unit 1B can be reduced and the manufacturing cost can be reduced as in the first embodiment. In addition, the degree of freedom in designing the power unit 1B can be increased. Similarly to the first embodiment, when starting the engine 3, the crankshaft 3a is driven by controlling the operation of the first rotating machine 11 by the first start mode control process, so that the engine 3 is started appropriately. can do. In this case, since the driving wheels DW and DW are held in a stationary state by controlling the operation of the second rotating machine 71, fluctuations in the speed of the driving wheels DW and DW can be prevented and the merchantability can be improved. In this case, the fourth rotor 75 is connected to the drive wheels DW and DW, and the straight lines representing the second magnetic field rotational speed NMF2 and the fourth rotor rotational speed NR4 are adjacent to each other in the speed nomograph. Therefore, the operation of the second rotating machine 71 can be controlled appropriately and easily.

  Similarly to the first embodiment, when starting the engine 3, the crankshaft 3a is driven by operating the starter 31 by the second start mode control process, so that the engine 3 can be started appropriately. In this case, since the driving wheels DW and DW are held in a stationary state by controlling the operation of the second rotating machine 71, fluctuations in the speed of the driving wheels DW and DW can be prevented and the merchantability can be improved. Further, as in the first embodiment, when the engine 3 is started, the state of charge of the main battery 44 is below a predetermined range, and the crankshaft 3 a is appropriately set by supplying power from the main battery 44 to the first rotating machine 11. Even when the engine 3 cannot be driven, the engine 3 can be appropriately started using the starter 31.

  Similarly to the first embodiment, when the engine 3 is started, the clutch CL cuts off the input shaft 52 of the compressor 51 and the crankshaft 3a, so that the driving force to the compressor 51 is transmitted to the crankshaft 3a. It is possible to prevent the actually transmitted driving force from being reduced. Therefore, the crankshaft 3a can be driven appropriately, and thus the engine 3 can be started properly. For the same reason, the crankshaft 3a can be appropriately driven by the first rotating machine 11 and the starter 31 even when the charged states of the main battery 44 and the auxiliary battery 33 are relatively small.

  In the third embodiment, the second and third rotors 15 and 74 are directly connected to each other, but may not be directly connected to each other as long as they are mechanically connected to the crankshaft 3a. Although the first and fourth rotors 14 and 75 are directly connected to each other, they may not be directly connected to each other as long as they are mechanically connected to the drive wheels DW and DW. In the third embodiment, the second and third rotors 15 and 74 are directly connected to the crankshaft 3a, but may be mechanically connected via a gear, a pulley, a chain, a transmission, or the like. Furthermore, in the third embodiment, the first and fourth rotors 14 and 75 are connected to the drive wheels DW and DW via the chain CH and the differential device DG, but may be mechanically connected directly. In the third embodiment, the first and second rotating machines 11 and 71 are arranged coaxially with each other, but instead, their axes are orthogonal to each other or parallel to each other. As such, they may be arranged.

  Furthermore, the power unit 1B can cause the vehicle to EV travel using the second rotating machine 71 as a power source in a state where the engine 3 is stopped and the output of the engine 3 is not generated. Further, even during the EV traveling, by controlling the operation of the starter 31, the first rotating machine 11, and the second rotating machine 71, the driving wheel rotational speed NDW resulting from the transmission of the driving force to the crankshaft 3a can be reduced. With the fluctuation suppressed, the crankshaft 3a can be driven and the engine 3 can be started. Hereinafter, in this case, control of the operations of the first and second rotating machines 11 and 71 when the crankshaft 3a is driven using the first rotating machine 11 will be briefly described.

  That is, when power is supplied from the main battery 44 to the second stator 73 to rotate the second rotating magnetic field in the forward direction, the rotation direction of the first rotating magnetic field determined by the drive wheel rotation speed NDW and the engine rotation speed NE is the reverse rotation direction. The first stator 13 generates power. Thus, as is apparent from the torque relationship shown in FIG. 35 described above, the second driving equivalent torque TSE2 is transmitted to the driving wheels DW and DW using the first power generation equivalent torque TGE1 as a reaction force, and as a result. Then, the drive wheels DW and DW rotate forward, and the above-described EV traveling is performed. In this case, the second driving equivalent torque TSE2 is transmitted not only to the driving wheels DW and DW but also to the crankshaft 3a, and by controlling the electric current generated by the first stator 13, the cranking is performed as such. The power transmitted to the shaft 3a can be controlled.

  More specifically, the current generated by the first stator 13 is controlled so that the second rotor transmission torque TR2 becomes the target value TR2OBJ described above. Further, the current supplied to the second stator 73 is controlled so that a torque corresponding to a value obtained by adding the required torque to the target value TR4OBJ described above acts on the fourth rotor 75. As described above, the crankshaft 3a can be driven while appropriately transmitting a torque equal to the required torque to the drive wheels DW and DW. Therefore, the drive wheel rotational speed NDW resulting from the transmission of the driving force to the crankshaft 3a. The engine 3 can be started in a state in which the fluctuation of the above is suppressed.

  In addition, when starting the engine 3 during EV traveling and driving the crankshaft 3 a using the starter 31, in order to suppress fluctuations in the drive wheel rotational speed NDW by controlling the operation of the second rotating machine 71, The operation of the two-rotor 71 is controlled as follows. That is, the second stator 73 is configured so that the target value TR4OBJ is calculated by a predetermined feedback control algorithm so that the drive wheel rotational speed NDW does not change, and the torque corresponding to the target value TR4OBJ acts on the fourth rotor 75. The current supplied to the is controlled. As described above, the crankshaft 3a can be appropriately driven by the starter 31 and the engine 3 can be started in a state where fluctuations in the drive wheel rotational speed NDW due to transmission of the driving force to the crankshaft 3a are suppressed.

  Further, as shown in FIG. 35 and the like described above, the first engine rotational speed NE, the drive wheel rotational speed NDW, and the first and second magnetic field rotational speeds NMF1 and NMF2 are collinear with each other. Both the drive equivalent torque TSE1 and the first power generation equivalent torque TGE1 act not only on the crankshaft 3a but also on the drive wheels DW and DW. The second drive equivalent torque TSE2 and the second power generation equivalent torque TGE2 are Both of them act not only on the drive wheels DW and DW but also on the crankshaft 3a. In the third embodiment, the crankshaft 3a is driven by controlling the operation of the first rotating machine 11, and the method of suppressing fluctuations in the drive wheel rotational speed NDW by controlling the operation of the second rotating machine 71 is adopted. However, since the first and second drive equivalent torques TSE1, TSE2 and the first and second power generation equivalent torques TGE1, TGE2 operate as described above, It is possible to drive the crankshaft 3 a by controlling the operation of the rotating machine 71 and to suppress fluctuations in the drive wheel rotational speed NDW by controlling the operation of the first rotating machine 11. In this case, during the traveling of the vehicle, the operation of the first rotating machine 11 described in the third embodiment is controlled by the second rotating machine 71 with respect to the operation of the second rotating machine 71 described in the third embodiment. Are controlled on the first rotating machine 11. Further, when the crankshaft 3 a is driven using the starter 31, it is possible to suppress fluctuations in the drive wheel rotational speed NDW by controlling the operations of both the first and second rotating machines 11 and 71. .

  Next, a power plant 1C according to a fourth embodiment of the present invention will be described with reference to FIGS. The power unit 1C is mainly different from the third embodiment described above in that the second rotating machine 21 and the planetary gear unit PG are provided instead of the second rotating machine 71. 38 and 39, the same components as those in the first and third embodiments are denoted by the same reference numerals. The following description will focus on differences from the first and third embodiments.

  As shown in FIG. 38, the planetary gear device PG is of a general single pinion type, similar to the planetary gear device PGS described above, and includes a sun gear S, a ring gear R, and a plurality of gears S and R that mesh with each other. It has a planetary gear P and a carrier C that rotatably supports these planetary gears P. As is well known, the sun gear S, the carrier C, and the ring gear R can transmit power to each other, rotate while maintaining a collinear relationship with respect to the rotational speed during power transmission, In the collinear chart showing the relationship, the straight lines representing the respective rotational speeds are arranged in order. In addition, the sun gear S, the carrier C, and the ring gear R are arranged coaxially with the first rotating shaft 7 described above.

  Further, the sun gear S is provided integrally with the first rotating shaft 7. The carrier C is provided integrally with the second rotating shaft 8 described above, and the first sprocket SP1 is attached to the carrier C. Further, the rotor 23 of the second rotating machine 21 is coaxially attached to the ring gear R.

  As described above, in the power unit 1C, the second rotor 15 and the sun gear S are mechanically directly connected to each other and mechanically directly connected to the crankshaft 3a. The first rotor 14 and the carrier C are mechanically directly connected to each other, and drive wheels are connected via the first sprocket SP1, the chain CH, the second sprocket SP2, the planetary gear device PGS, the differential device DG, and the like. DW, mechanically connected to DW. Further, the ring gear R is mechanically directly connected to the rotor 23.

  As shown in FIG. 39, the ECU 2 is electrically connected to a third rotation angle sensor 67. The third rotation angle sensor 67 detects the rotation angle position of the rotor 23 relative to the stator 22. The detection signal is output to the ECU 2. The ECU 2 calculates the second rotating machine rotational speed NM2 based on the detected rotational angle position of the rotor 23.

  Further, the ECU 2 operates the clutch CL, the engine 3, the starter 31, the first and second rotating machines 11 and 21 according to the control program stored in the ROM in accordance with the detection signals from the various sensors and the switches 61 to 67. To control. Thus, as in the third embodiment, the vehicle is operated in various operation modes including the first and second start modes among the stopped ENG start modes. Hereinafter, the first and second start modes will be described in order.

[First start mode]
The first start mode control process is executed according to the flowchart shown in FIG. The execution conditions of this process are the same as those in the first embodiment. Further, the power unit 1C is different from the third embodiment only in that the second rotating machine 21 and the planetary gear unit PG are provided instead of the second rotating machine 71. The process differs from the first start mode control process of the third embodiment shown in FIG. 34 described above only in the control of the operation of the second rotating machine 21, and step 51 is replaced with step 51. Only the point of execution is different. Therefore, this difference will be mainly described below. In FIG. 40, steps having the same execution contents as those in FIG. 34 are denoted by the same step numbers and description thereof is omitted.

In Step 51 of FIG. 40 following Step 2, the operation of the second rotating machine 21 is controlled as follows, and Step 4 and subsequent steps are executed. That is, first, the target value TCOBJ of the torque to be applied to the carrier C is calculated by the following equation (48). Next, the stator 22 generates power, and the current generated by the stator 22 is controlled so that a torque corresponding to the target value TCOBJ acts on the carrier C in the forward rotation direction.
TCOBJ = α · TR2OBJ / (1 + α) (48)

  Next, an operation example of the first start mode control process described above will be described with reference to FIG. First, FIG. 41 will be described. As is clear from the connection relationship between the various rotary elements described above in the power unit 1C, the engine speed NE, the second rotor speed NR2, and the sun gear S are equal to each other, and the second rotating machine speed NM2 And the rotation speed of the ring gear R is equal to each other. Further, the first rotor rotational speed NR1 and the rotational speed of the carrier C are equal to each other, and are equal to the drive wheel rotational speed NDW if shifting by the planetary gear device PGS or the like is ignored. Further, the first magnetic field rotational speed NMF1, the first and second rotor rotational speeds NR1 and NR2 are in a predetermined collinear relationship as expressed by the formula (40), and the sun gear S, the carrier C and the ring gear R The rotation speed has a predetermined collinear relationship determined by the number of teeth of the sun gear S and the number of teeth of the ring gear R.

  From the above, the relationship among the first magnetic field rotational speed NMF1, the engine rotational speed NE, the drive wheel rotational speed NDW, and the second rotating machine rotational speed NM2 is represented by a speed collinear chart as shown in FIG. In the figure, TG2 is a braking torque (hereinafter referred to as “second power generation torque”) of the second rotating machine 21 that acts on the rotor 23 as power is generated by the stator 22. X is the ratio of the number of teeth of the sun gear S to the number of teeth of the ring gear R. Further, in order to distinguish the sun gear S, the carrier C, and the ring gear R from the sun gear PS, the carrier PC, and the ring gear PR of the planetary gear device PGS, the symbols of the three parties S, C, and R are written in parentheses.

  As is apparent from FIG. 41, the first driving equivalent torque TSE1 is transmitted to the crankshaft 3a through the second rotor 15 using the second power generation torque TG2 as a reaction force, thereby driving both the motors 15 and 3a. And rotate forward. In this case, as in the third embodiment, the current supplied to the first stator 13 is controlled so that the second rotor transmission torque TR2 becomes the target value TR2OBJ. Feedback control is performed so that the rotation speed becomes NEST. In this state, the engine 3 is started.

  As is clear from FIG. 41, the first driving equivalent torque TSE1 acts to reverse the first rotor 14, the carrier C, and the driving wheels DW and DW using the engine friction TEF as a reaction force. The torque acting so as to reverse the first rotor 14 or the like (the first rotor reverse torque) is, as is apparent from the equation (41), the second rotor transmission torque TR2 and the first pole log ratio α. It is represented by -α · TR2 / (1 + α).

  On the other hand, the current generated by the stator 22 is controlled so that the torque corresponding to the target value TCOBJ acts on the carrier C in the forward rotation direction by controlling the operation of the second rotating machine 21 described above. At the same time, the target value TCOBJ is calculated by the equation (48), that is, TCOBJ = α · TR2OBJ / (1 + α). As is apparent from this and the fact that the first rotor reverse rotation torque is represented by -α · TR2 / (1 + α) as described above, the first rotor is driven by the torque acting on the carrier C by the second power generation torque TG2. The reverse rotation torque is canceled, and as a result, the drive wheels DW and DW are held in a stationary state (NDW = 0).

[Second start mode]
The second start mode control process is executed according to the flowchart shown in FIG. The execution conditions of this process are the same as those in the first embodiment. Further, this process is similar to the first start mode control process described above, but only controls the operation of the second rotating machine 21 as compared with the second start mode control process of the third embodiment shown in FIG. 36 described above. The only difference is that step 61 is executed instead of step 41. Therefore, this difference will be mainly described below. In FIG. 42, steps having the same execution contents as those in FIG. 36 are denoted by the same step numbers and description thereof is omitted.

  In Step 61 of FIG. 42 following Step 12, the operation of the second rotating machine 21 is controlled as follows, and Step 14 and subsequent steps are executed. That is, first, the target value TCOBJ is calculated by a predetermined feedback control algorithm so that the driving wheel rotational speed NDW becomes 0. Next, power is supplied from the main battery 44 to the stator 22, and the current supplied to the stator 22 is controlled so that a torque corresponding to the target value TCOBJ acts on the carrier C.

  Next, an operation example of the above-described second start mode control process will be described with reference to FIG. As shown in FIG. 43, as in the first embodiment, the crankshaft 3a is rotated forward by being driven by the starter 31, and the engine rotational speed NE exceeds the starting rotational speed NEST. In this state, the engine 3 is started. In this case, as apparent from FIG. 43, the torque TST of the starter 31 is applied to the drive wheels DW and DW via the second and first rotors 15 and 14 by using the first magnetic field rotation resistance DMF1 described above as a reaction force. Acts to rotate forward.

  On the other hand, by controlling the operation of the second rotating machine 21 described above, the torque acting on the carrier C is controlled so that the drive wheel rotational speed NDW becomes zero. Thereby, the torque acting on the drive wheels DW and DW due to the first magnetic field rotation resistance DMF1 is offset by the torque acting on the carrier C by the second power running torque TM2, and as a result, the drive wheels DW and DW Is held in a stationary state (NDW = 0).

  Moreover, 4th Embodiment described so far respond | corresponds to the invention which concerns on Claims 9-12 described in the claim, Various elements in 4th Embodiment, Claims 9- Correspondences with various elements in the invention according to No. 12 (hereinafter referred to as “third invention” when collectively referred to) are as follows. That is, the drive wheels DW and DW, the engine 3 and the planetary gear device PG in the fourth embodiment correspond to the driven part, the heat engine, and the power transmission mechanism in the third invention, respectively, and the ECU 2 and the VCU 43 in the fourth embodiment. The first and second PDUs 41 and 42 correspond to the control device in the third invention. The crankshaft 3a in the fourth embodiment corresponds to the output section in the third invention, and the sun gear S, the carrier C, and the ring gear R in the fourth embodiment are the first element, the second element, and the second element in the third invention. The permanent magnet 14a and the core 15a in the fourth embodiment correspond to the three elements, respectively, and the magnetic pole and the soft magnetic material in the third invention. Furthermore, the first stator 13 in the fourth embodiment corresponds to the stator in the third invention, and the iron core 13a and the U-phase to W-phase coils 13c to 13e in the fourth embodiment are armature arrays in the third invention. It corresponds to.

  Further, the compressor 51 in the fourth embodiment corresponds to an auxiliary machine in the invention according to claim 12, and the clutch CL and the ECU 2 in the fourth embodiment correspond to power transmission limiting means in the invention according to claim 12. .

  As described above, according to the fourth embodiment, since the first rotating machine 11 is used, similarly to the first embodiment, the power device 1C can be reduced in size and the manufacturing cost can be reduced, and the power device can be reduced. The degree of freedom in designing 1C can be increased. Similarly to the first embodiment, when starting the engine 3, the crankshaft 3a is driven by controlling the operation of the first rotating machine 11 by the first start mode control process, so that the engine 3 is started appropriately. can do. In this case, since the drive wheels DW and DW are held in a stationary state by controlling the operation of the second rotating machine 21, speed fluctuations of the drive wheels DW and DW can be prevented, and the merchantability can be improved. In this case, as described above, the straight lines representing the rotational speeds of the carrier C and the ring gear R are adjacent to each other in the collinear diagram representing the relationship between the rotational speeds. Control can be performed appropriately and easily.

  Similarly to the first embodiment, when starting the engine 3, the crankshaft 3a is driven by operating the starter 31 by the second start mode control process, so that the engine 3 can be started appropriately. In this case, since the drive wheels DW and DW are held in a stationary state by controlling the operation of the second rotating machine 21, speed fluctuations of the drive wheels DW and DW can be prevented, and the merchantability can be improved. Further, as in the first embodiment, when the engine 3 is started, the state of charge of the main battery 44 is below a predetermined range, and the crankshaft 3 a is appropriately set by supplying power from the main battery 44 to the first rotating machine 11. Even when the engine 3 cannot be driven, the engine 3 can be appropriately started using the starter 31.

  Similarly to the first embodiment, when the engine 3 is started, the clutch CL cuts off the input shaft 52 of the compressor 51 and the crankshaft 3a, so that the driving force to the compressor 51 is transmitted to the crankshaft 3a. It is possible to prevent the actually transmitted driving force from being reduced. Therefore, the crankshaft 3a can be driven appropriately, and thus the engine 3 can be started properly. For the same reason, the crankshaft 3a can be appropriately driven by the first rotating machine 11 and the starter 31 even when the charged states of the main battery 44 and the auxiliary battery 33 are relatively small.

  In the fourth embodiment, the single-pinion type planetary gear device PG is used as the power transmission mechanism in the third invention. However, the power transmission mechanism is capable of transmitting power while maintaining a collinear relationship with respect to the rotational speed. Other mechanisms such as a double pinion type planetary gear device or a differential device DG may be used as long as the mechanism has the first to third elements. Alternatively, instead of the gear of the planetary gear device, a mechanism having a plurality of rollers that transmit power by friction between the surfaces and having a function equivalent to that of the planetary gear device may be used. Moreover, although detailed description is abbreviate | omitted, you may use the mechanism comprised by the combination of the several magnet and soft magnetic body which are disclosed by Unexamined-Japanese-Patent No. 2008-39045.

  In the fourth embodiment, the second rotor 15 and the sun gear S are directly connected to each other. However, the second rotor 15 and the sun gear S may not be directly connected to each other as long as they are mechanically connected to the crankshaft 3a. The rotor 14 and the carrier C are directly connected to each other, but may not be directly connected to each other as long as they are mechanically connected to the drive wheels DW and DW. Further, in the fourth embodiment, the second rotor 15 and the sun gear S are directly connected to the crankshaft 3a. However, the second rotor 15 and the sun gear S may be mechanically connected via a gear, a pulley, a chain, a transmission, or the like.

  In the fourth embodiment, the first rotor 14 and the carrier C are coupled to the drive wheels DW and DW via the chain CH and the differential device DG, but may be mechanically coupled directly. Further, in the fourth embodiment, the ring gear R is directly connected to the rotor 23, but may be mechanically connected via a gear, a pulley, a chain, a transmission, or the like.

  In the fourth embodiment, the ring gear R is connected to the rotor 23 and the sun gear S is connected to the crankshaft 3a. However, the connection relationship is reversed, that is, the ring gear R is connected to the crankshaft 3a and the sun gear S is connected. May be mechanically connected to the rotor 23. In this case, as a matter of course, the ring gear R and the crankshaft 3a, and the sun gear S and the rotor 23 may be directly mechanically connected, or a gear, a pulley, a chain, and a transmission device may be connected. Etc., may be mechanically connected.

  Furthermore, the power unit 1 </ b> C can cause the vehicle to EV travel using the second rotating machine 21 as a power source in a state where the engine 3 is stopped and the output of the engine 3 is not generated. Further, even during the EV traveling, by controlling the operation of the starter 31, the first rotating machine 11, and the second rotating machine 21, the driving wheel rotational speed NDW resulting from the transmission of the driving force to the crankshaft 3 a can be reduced. With the fluctuation suppressed, the crankshaft 3a can be driven and the engine 3 can be started. Hereinafter, in this case, control of the operations of the first and second rotating machines 11 and 21 when the crankshaft 3a is driven using the first rotating machine 11 will be briefly described.

  That is, when power is supplied from the main battery 44 to the stator 22 to rotate the rotor 23 in the forward direction, and the rotation direction of the first rotating magnetic field determined by the drive wheel rotational speed NDW and the engine rotational speed NE is the reverse rotation direction, One stator 13 generates power. Thereby, as is apparent from the speed alignment chart shown in FIG. 41 described above, the second power running torque TM2 is transmitted to the drive wheels DW and DW using the first power generation equivalent torque TGE1 as a reaction force, and as a result, The drive wheels DW and DW rotate in the forward direction, and the above-described EV traveling is performed. In this case, the second power running torque TM2 is transmitted not only to the drive wheels DW and DW but also to the crankshaft 3a, and by controlling the current generated by the first stator 13, the crankshaft 3a is thus made. The power transmitted to can be controlled.

  More specifically, as in the third embodiment, the current generated by the first stator 13 is controlled so that the second rotor transmission torque TR2 becomes the aforementioned target value TR2OBJ. Further, the current supplied to the stator 22 is controlled so that a torque corresponding to a value obtained by adding the required torque to the target value TCOBJ described above acts on the carrier C. As described above, the crankshaft 3a can be driven while appropriately transmitting a torque equal to the required torque to the drive wheels DW and DW. Therefore, the drive wheel rotational speed NDW resulting from the transmission of the driving force to the crankshaft 3a. The engine 3 can be started in a state in which the fluctuation of the above is suppressed.

  In addition, when starting the engine 3 during EV traveling and driving the crankshaft 3 a using the starter 31, in order to suppress fluctuations in the drive wheel rotational speed NDW by controlling the operation of the second rotating machine 21, The operation of the two-rotor 21 is controlled as follows. That is, the target value TCOBJ is calculated by a predetermined feedback control algorithm so that the driving wheel rotational speed NDW does not change, and the torque corresponding to the target value TCOBJ is supplied to the stator 22 so as to act on the carrier C. Control the current. As described above, the crankshaft 3a can be appropriately driven by the starter 31 and the engine 3 can be started in a state where fluctuations in the drive wheel rotational speed NDW due to transmission of the driving force to the crankshaft 3a are suppressed.

  Furthermore, as shown in FIG. 41 and the like described above, it is clear from the fact that the engine speed NE, the drive wheel speed NDW, the first magnetic field speed NMF1 and the second rotating machine speed NM2 are collinear with each other. The first driving equivalent torque TSE1 and the first power generation equivalent torque TGE1 act not only on the crankshaft 3a but also on the drive wheels DW and DW. The second power running torque TM2 and the second power generation torque TG2 are both In addition, it acts not only on the drive wheels DW and DW but also on the crankshaft 3a. In the fourth embodiment, the crankshaft 3a is driven by controlling the operation of the first rotating machine 11, and the method of suppressing fluctuations in the drive wheel rotational speed NDW by controlling the operation of the second rotating machine 21 is adopted. However, since the first driving equivalent torque TSE1, the first power generation equivalent torque TGE1, the second power running torque TM2 and the second power generation torque TG2 act as described above, It is possible to drive the crankshaft 3 a by controlling the operation of the second rotating machine 21 and to suppress fluctuations in the drive wheel rotational speed NDW by controlling the operation of the first rotating machine 11. In this case, during the traveling of the vehicle, the operation of the first rotating machine 11 described in the fourth embodiment is controlled by the second rotating machine 21 with respect to the operation of the second rotating machine 21 described in the fourth embodiment. Are controlled on the first rotating machine 11. Further, when the crankshaft 3 a is driven using the starter 31, it is possible to suppress fluctuations in the drive wheel rotational speed NDW by controlling the operations of both the first and second rotating machines 11 and 21. .

  In the fourth embodiment, a second rotating machine 21 and a planetary gear device PG are provided instead of the first rotating machine 11, and a second rotating machine 71 is used instead of the second rotating machine 21 and the planetary gear device PG. May be provided. In this case, the carrier C and the first rotor 14 are mechanically connected to the crankshaft 3a, and the sun gear S (or ring gear R) and the second rotor 15 are mechanically connected to the drive wheels DW and DW, respectively. Moreover, the power plant configured as described above corresponds to the invention according to claims 11 to 15. Further, in this case, in the first start mode control process, the operation of the second rotating machine 21 is controlled so as to drive the crankshaft 3a, and in the first and second start mode control processes, the operation to the crankshaft 3a is controlled. The operation of the second rotating machine 71 is controlled so as to suppress fluctuations in the drive wheel rotational speed NDW due to the transmission of the driving force. Also in this case, as a matter of course, the effect of the fourth embodiment can be obtained similarly. In addition, when various rotating elements are connected as described above, the operation of the second rotating machine 71 is controlled so as to drive the crankshaft 3a, and the driving wheel is caused by transmission of driving force to the crankshaft 3a. It is possible to control the operation of the second rotating machine 21 so as to suppress fluctuations in the rotational speed NDW. In addition, when the crankshaft 3a is driven using the starter 31, it is possible to control the operations of the second rotating machine 71 and the second rotating machine 21 so as to suppress fluctuations in the drive wheel rotational speed NDW. It is.

  Furthermore, in 1st, 2nd and 4th embodiment, although the 2nd rotary machine 21 is a synchronous brushless DC motor, while converting the supplied electric power into motive power and outputting it, the input motive power is also used. Other devices such as a synchronous type or induction machine type AC motor may be used as long as they can be converted into electric power.

  In the first to fourth embodiments (hereinafter collectively referred to as “embodiments”), the first rotating machine 11 includes four first armature magnetic poles, eight first magnet magnetic poles, and six cores 15a. That is, the ratio of the number of the first armature magnetic poles, the number of the first magnet magnetic poles, and the number of the cores 15a is an example of 1: 2: 1.5, but the ratio of these numbers is 1 As long as: m: (1 + m) / 2 (m ≠ 1.0) is satisfied, any number of the first armature magnetic poles, the first magnet magnetic poles, and the cores 15a can be adopted. Furthermore, in the embodiment, the core 15a is made of a steel plate, but may be made of another soft magnetic material. In the embodiment, the first stator 13 and the first rotor 14 are arranged on the outer side and the inner side in the radial direction, but conversely, they may be arranged on the inner side and the outer side in the radial direction. .

  Further, in the embodiment, the first stator 13 and the first and second rotors 14 and 15 are arranged so as to be aligned in the radial direction, and the first rotating machine 11 is configured as a so-called radial type. Alternatively, the first and second rotors 14 and 15 may be arranged so as to be aligned in the axial direction, and the first rotating machine 11 may be configured as a so-called axial type. Further, in the embodiment, one first magnet magnetic pole is constituted by the magnetic pole of a single permanent magnet 14a, but may be constituted by magnetic poles of a plurality of permanent magnets. For example, by arranging these two permanent magnets in an inverted V shape so that the magnetic poles of the two permanent magnets approach each other on the first stator 13 side, one first magnet magnetic pole is configured as described above. The directivity of the magnetic field lines ML can be increased. Further, in the embodiment, an electromagnet may be used instead of the permanent magnet 14a.

  Moreover, in embodiment, although the coils 13c-13e are comprised with the three-phase coil of U phase-W phase, if the 1st rotation magnetic field can be generated, the number of phases of this coil will not be restricted to this, but is arbitrary. . Furthermore, in the embodiment, it is needless to say that any number other than that shown in the embodiment may be adopted as the number of slots 13b. Further, in the embodiment, the U-phase to W-phase coils 13c to 13e are wound around the slot 13b by distributed winding. Furthermore, in the embodiment, the slots 13b, the permanent magnets 14a, and the cores 15a are arranged at equal intervals, but may be arranged at unequal intervals. The above modification regarding the first rotating machine 11 is similarly applied to the second rotating machine 71 in the third embodiment.

  In the embodiment, the control device for controlling the operation of the engine 3, the first and second rotating machines 11, 21, 71 is composed of the ECU 2, VCU 43, first and second PDUs 41, 42. You may comprise by the combination of a microcomputer and an electric circuit. Furthermore, in the embodiment, the main battery 44 is used as the power source for the first and second rotating machines 11, 21, 71. However, other devices such as capacitors may be used as long as they can be charged and discharged. Good.

  In the embodiment, the auxiliary machine in the present invention is the compressor 31, but any other auxiliary machine, for example, an oil pump for supplying lubricating oil or hydraulic oil to various mechanisms mounted on the vehicle. But you can. Further, in the embodiment, the transmission of the driving force to the auxiliary machine by the power transmission limiting means in the present invention is limited by blocking the power transmission path between the crankshaft 3a and the compressor 51 with the clutch CL. Alternatively, the compressor 51 may be stopped. Moreover, when pumps such as an oil pump are used as an auxiliary machine as described above, the power transmission restriction means limits the energy consumed by the pump by closing the discharge port of the pump. May be performed. Further, a friction clutch may be used as the clutch CL instead of an electromagnetic clutch.

  In the embodiment, the engine 3 as the heat engine of the present invention is a gasoline engine, but may be an arbitrary heat engine having an output unit capable of outputting power. For example, various industrial internal combustion engines including a marine propulsion engine such as a diesel engine or an outboard motor with a crankshaft arranged in a vertical direction may be used, or an external combustion engine such as a Stirling engine may be used. . Furthermore, the means for connecting the various rotary elements in the embodiment can be arbitrarily adopted as long as the conditions in the present invention are satisfied. For example, a pulley or the like may be used instead of the gear described in the embodiment. Moreover, although embodiment has the example which applied the power unit by this invention to the vehicle, you may apply to a ship and an aircraft, for example. In addition, it is possible to appropriately change the detailed configuration and control method within the scope of the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Power unit 1A Power unit 1B Power unit 1C Power unit DW, DW Drive wheel (driven part)
2 ECU (control device, power transmission limiting means)
3 Engine (heat engine)
3a Crankshaft (output part)
11 First rotating machine 13 First stator (stator)
13a Iron core (armature row, first armature row)
13c U-phase coil (armature array, first armature array)
13d V-phase coil (armature array, first armature array)
13e W phase coil (armature array, first armature array)
14 First rotor 14a Permanent magnet (magnetic pole, first magnetic pole)
15 Second rotor 15a Core (soft magnetic body, first soft magnetic body)
21 2nd rotating machine 23 Rotor 31 Starter 41 1st PDU (control device)
42 Second PDU (control device)
43 VCU (control unit)
51 Compressor (auxiliary machine)
CL clutch (power transmission limiting means)
71 Second rotating machine 73 Second stator 73a Iron core (second armature row)
73b U-phase, V-phase and W-phase coils (second armature train)
74 Third rotor 74a Permanent magnet (second magnetic pole)
75 Fourth rotor 75a Core (second soft magnetic body)
PG planetary gear unit (power transmission mechanism)
S Sungear (first element)
C carrier (2nd element)
R ring gear (third element)

Claims (12)

A power device for driving a driven part,
A heat engine having an output for outputting power;
A first rotating machine;
A second rotating machine that converts the supplied electric power into power and outputs the power from the rotor, and that can convert the power input to the rotor into electric power;
A control device for controlling the operation of the heat engine and the first and second rotating machines,
The first rotating machine includes a plurality of predetermined magnetic poles arranged in the circumferential direction, and has a magnetic pole array in which each of the two adjacent magnetic poles has different polarities, and rotates in the circumferential direction. A rotating magnetic field that rotates in the circumferential direction is generated between the first rotor and the magnetic pole array, and a plurality of predetermined armature magnetic poles are generated. A stationary stator having an armature row to be arranged, and a plurality of predetermined soft magnetic bodies arranged in the circumferential direction at intervals from each other, and disposed between the magnetic pole row and the armature row. A second rotor that has a row of soft magnetic bodies and is rotatable in the circumferential direction,
The ratio of the number of armature magnetic poles, the number of magnetic poles and the number of soft magnetic bodies is set to 1: m: (1 + m) / 2 (m ≠ 1.0),
One of the first and second rotors is mechanically connected to the output part, the other of the first and second rotors is mechanically connected to the driven part, and the rotor is Mechanically connected to the driven part,
When starting the heat engine, the control device controls at least one of the first and second rotating machines so as to suppress a change in speed of the driven part due to transmission of driving force to the output part. A power unit that controls operation. A starter for driving the output unit to start the heat engine;
The control device operates the starter when starting the heat engine, and suppresses a change in speed of the driven part due to transmission of driving force from the starter to the output part. 2. The power plant according to claim 1, wherein an operation of the at least one of the first and second rotating machines is controlled.   The control device controls the operation of the first rotating machine so as to drive the output unit when starting the heat engine, and controls the driven unit caused by transmission of driving force to the output unit. The power unit according to claim 1, wherein an operation of the second rotating machine is controlled so as to suppress a speed change. An auxiliary machine is mechanically connected to the output unit,
The power transmission limiting means for limiting the transmission of the driving force for driving the output unit to the auxiliary machine when starting the heat engine is further provided. The power plant described. A power device for driving a driven part,
A heat engine having an output for outputting power;
A first rotating machine;
A second rotating machine,
A control device for controlling the operation of the heat engine and the first and second rotating machines,
The first rotating machine is composed of a plurality of predetermined first magnetic poles arranged in the first circumferential direction, and is arranged such that each of the two adjacent first magnetic poles has different polarities. The first rotor that is rotatable in the first circumferential direction and the first rotor is disposed so as to face the first magnetic pole row, and by generating a plurality of predetermined first armature magnetic poles, An immovable first stator having a first armature row for generating a first rotating magnetic field rotating in the circumferential direction between the first magnetic pole row and the first circumferential magnetic field spaced apart from each other. The first soft magnetic body is composed of a predetermined plurality of first soft magnetic bodies, and has a first soft magnetic body row disposed between the first magnetic pole row and the first armature row, and is rotatable in the first circumferential direction. A second rotor of
The ratio of the number of the first armature magnetic poles, the number of the first magnetic poles, and the number of the first soft magnetic bodies is set to 1: m: (1 + m) / 2 (m ≠ 1.0). ,
The second rotating machine is composed of a predetermined plurality of second magnetic poles arranged in the second circumferential direction, and is arranged such that each of the two adjacent second magnetic poles has different polarities. And a second rotor that is rotatable in the second circumferential direction, and is arranged to face the second magnetic pole row, and by generating a predetermined plurality of second armature magnetic poles, An immovable second stator having a second armature row for generating a second rotating magnetic field rotating in the circumferential direction between the second magnetic pole row and the second circumferential direction spaced apart from each other. It is composed of a predetermined plurality of second soft magnetic bodies and has a second soft magnetic body row disposed between the second magnetic pole row and the second armature row, and is rotatable in the second circumferential direction. And a fourth rotor of
The ratio of the number of the second armature magnetic poles, the number of the second magnetic poles, and the number of the second soft magnetic bodies is set to 1: n: (1 + n) / 2 (n ≠ 1.0). ,
The second and third rotors are mechanically connected to the output part, and the first and fourth rotors are mechanically connected to the driven part,
When starting the heat engine, the control device controls at least one of the first and second rotating machines so as to suppress a change in speed of the driven part due to transmission of driving force to the output part. A power unit that controls operation. A starter for driving the output unit to start the heat engine;
The control device operates the starter when starting the heat engine, and suppresses a change in speed of the driven part due to transmission of driving force from the starter to the output part. The power unit according to claim 5, wherein the operation of the at least one of the first and second rotating machines is controlled.   When starting the heat engine, the control device performs one operation of the first and second rotating machines so as to suppress a speed change of the driven part due to transmission of driving force to the output part. The power unit according to claim 5, wherein the power unit controls the other operation of the first and second rotating machines so as to drive the output unit. An auxiliary machine is mechanically connected to the output unit,
The power transmission limiting means for limiting the transmission of the driving force for driving the output unit to the auxiliary machine when starting the heat engine is further provided. The power plant described. A power device for driving a driven part,
A heat engine having an output for outputting power;
A first rotating machine;
A second rotating machine that converts the supplied electric power into power and outputs the power from the rotor, and that can convert the power input to the rotor into electric power;
Power can be transmitted between each other, and during transmission of the power, while rotating while maintaining a collinear relationship with respect to the rotational speed between each other, in the collinear chart showing the relationship of the rotational speed, A power transmission mechanism having a first element, a second element, and a third element configured such that the straight lines to represent are arranged in order;
A control device for controlling the operation of the heat engine and the first and second rotating machines,
The first rotating machine includes a plurality of predetermined magnetic poles arranged in the circumferential direction, and has a magnetic pole array in which each of the two adjacent magnetic poles has different polarities, and rotates in the circumferential direction. A rotating magnetic field that rotates in the circumferential direction is generated between the first rotor and the magnetic pole array, and a plurality of predetermined armature magnetic poles are generated. A stationary stator having an armature row to be arranged, and a plurality of predetermined soft magnetic bodies arranged in the circumferential direction at intervals from each other, and disposed between the magnetic pole row and the armature row. A second rotor that has a row of soft magnetic bodies and is rotatable in the circumferential direction,
The ratio of the number of armature magnetic poles, the number of magnetic poles and the number of soft magnetic bodies is set to 1: m: (1 + m) / 2 (m ≠ 1.0),
One of the first rotor and the second element, and the second rotor and the first element is mechanically coupled to the output unit, and the first rotor and the second element, the second rotor, and the first The other one of the elements is mechanically connected to the driven part, and the third element is mechanically connected to the rotor;
When starting the heat engine, the control device controls at least one of the first and second rotating machines so as to suppress a change in speed of the driven part due to transmission of driving force to the output part. A power unit that controls operation. A starter for driving the output unit to start the heat engine;
The control device operates the starter when starting the heat engine, and suppresses a change in speed of the driven part due to transmission of driving force from the starter to the output part. The power unit according to claim 9, wherein the operation of the at least one of the first and second rotating machines is controlled.   When starting the heat engine, the control device performs one operation of the first and second rotating machines so as to suppress a speed change of the driven part due to transmission of driving force to the output part. The power unit according to claim 9, wherein the power unit controls the other operation of the first and second rotating machines so as to drive the output unit. An auxiliary machine is mechanically connected to the output unit,
The power transmission restriction means for restricting the transmission of the driving force transmitted to the output unit to the auxiliary machine when starting the heat engine is further provided. Power unit.

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