JP5171497B2 - Auxiliary drive - Google Patents

Description

  The present invention relates to an accessory drive device that drives an accessory, and more particularly to an accessory drive device having a rotating machine provided between a prime mover and an accessory.

  The present applicant has already proposed a conventional accessory drive device described in Patent Document 1. This auxiliary machine drive device drives an auxiliary machine such as a compressor of an air conditioner mounted on a vehicle by using an internal combustion engine (hereinafter referred to as “engine”) and a rotating machine as power sources. In the example shown, the rotating machine is provided between the engine and the auxiliary machine.

  This rotating machine is electrically connected to the ECU and the battery via the PDU, and its operating state is controlled by the ECU. The rotating machine includes a cylindrical case, an input shaft and an output shaft that are rotatably supported by the case, a stator that is provided on the inner wall of the case along the circumferential direction, and a first rotor that is accommodated in the case. And a second rotor provided between the first rotor and the stator, and the stator, the first rotor, and the second rotor are disposed concentrically with each other.

  The crankshaft of the engine is directly connected to one end of the input shaft of the rotating machine, and the second rotor is concentrically fixed to the other end. Further, the first rotor is concentrically fixed to one end portion of the output shaft of the rotating machine, and the pulley is fixed to the other end portion. This pulley is connected to the pulley of the auxiliary machine via a belt, whereby the power of the output shaft of the rotating machine is transmitted to the auxiliary machine via the two pulleys and the belt.

  The stator includes a plurality of armatures arranged at predetermined intervals, and the coils of each of the three adjacent armatures are U-phase and V-phase when the battery power is supplied via the PDU. , W-phase and a three-phase coil that generates a moving magnetic field. Furthermore, a permanent magnet row is provided along the circumferential direction on the outer peripheral surface of the first rotor. This permanent magnet row is composed of a plurality of permanent magnets, and these two permanent magnets are arranged at equal intervals and with two adjacent poles having different polarities.

  On the other hand, on the outer circumferential surface of the second rotor, two soft magnetic material rows extend in parallel to each other along the circumferential direction. These two soft magnetic material rows are composed of a plurality of soft magnetic material cores arranged at predetermined intervals along the circumferential direction, and the soft magnetic material core of one soft magnetic material row is the other soft magnetic material row. With respect to the soft magnetic core, the electric angle is shifted by π / 2.

  According to the above auxiliary machine drive device, during engine operation, the second rotor of the rotating machine rotates with the rotation of the crankshaft. As a result, the magnetic force acts on the first rotor via the soft magnetic cores of the two soft magnetic rows of the second rotor, thereby driving the auxiliary machine and generating a rotating magnetic field in the stator. The power generation operation is executed.

JP 2008-43138 A

  According to the above-mentioned conventional accessory drive device, due to the structural characteristics of the rotating machine, the first rotor passes through the soft magnetic core of one soft magnetic row of the second rotor during the rotation of the second rotor. The magnetic force or torque acting on the rotor and the magnetic force or torque acting on the first rotor via the soft magnetic core of the other soft magnetic body row alternately become stronger or weaker. At that time, torque ripple and cogging torque are generated due to the difference in torque change (gradient) with respect to the rotation angle of the second rotor between the increasing direction and the decreasing direction (see FIG. 15 described later). As a result, merchantability is reduced.

  The present invention has been made to solve the above problems, and in the case of having a rotating machine provided between a prime mover and an auxiliary machine, torque ripple and cogging torque of the rotating machine can be reduced, thereby An object of the present invention is to provide an accessory drive device that can improve the merchantability.

In order to achieve the above object, an invention according to claim 1 is an auxiliary machine driving device 1C to 1E that is connected to a prime mover (engine 3) and drives an auxiliary machine 4, and is a stator for generating a rotating magnetic field. 90 and a first rotor 70 and a second rotor 80 that are rotatable relative to the stator 90, and one of the first rotor 70 and the second rotor 80 is mechanically coupled to the prime mover (engine 3). The other of the first rotor 70 and the second rotor 80 is mechanically coupled to the auxiliary machine 4 and a rotating magnetic field is generated between the stator 90, the first rotor 70, and the second rotor 80. Rotating machines 60 and 60A to 60C that input and output energy via a magnetic circuit that is formed, and a control device (ECU2, PDU30) that controls the input and output state of electric power in the stator 90, the stator 9 Has a plurality of armatures 91 arranged along an imaginary cylindrical surface, generates a rotating magnetic field by magnetic poles generated in the plurality of armatures 91 in accordance with energy input / output, and generates the first rotor 70. Has a plurality of magnetic poles (permanent magnets 72) arranged along a virtual cylindrical surface with a space between each other, and the plurality of magnetic poles are different from each other in two adjacent polarities, and have a plurality of armatures. The second rotor 80 is arranged so as to be along a virtual cylindrical surface with a space between each other, and a plurality of armatures 91 and a plurality of magnetic poles (permanent magnets 72). And each of the plurality of armatures 91 extends in the first predetermined direction along the virtual cylindrical surface, and includes a plurality of magnetic poles. Each of the (permanent magnets 72) has an electrical angle between both ends of each magnetic pole of θ Each of the plurality of soft magnetic bodies (soft magnetic cores 81) has an electrical angle θb between both end portions of each soft magnetic body so as to be a. So that the electrical angle between both ends of the magnetic poles generated in the plurality of armatures 91 during the generation of the rotating magnetic field is θs. = 2θb−θa is established.

  According to this auxiliary machine drive device, one of the first rotor and the second rotor of the rotating machine is mechanically connected to the prime mover, and the other of the first rotor and the second rotor is mechanically connected to the auxiliary machine. . Further, energy is input / output between the stator, the first rotor, and the second rotor via a magnetic circuit formed in accordance with the generation of the rotating magnetic field, and power is input / output in the stator by the control device. Since the state is controlled, the auxiliary machine can be driven by the power of the prime mover and / or the rotary machine, and the power regeneration in the rotary machine is enabled by the power of the prime mover or the kinetic energy of the auxiliary machine.

  Further, the rotating machine is configured so that θs = 2θb−θa is established when the electrical angle between both ends of the magnetic poles generated in the plurality of armatures is θs during the generation of the rotating magnetic field. When the rotating machine is configured in this way, as described later, the rotating machine according to claim 1 having m sets of rotating machine structures corresponds to a rotating machine structure having a value m set to infinity. As a result, the same operating state as the rotating machine of claim 1 can be obtained. That is, the operating state of the rotating machine can be controlled so as to exhibit the same operating characteristics as the planetary gear device, as in the rotating machine of claim 1. For the same reason, the torque ripple and the cogging torque can be further reduced as compared with the rotating machine of the first aspect, and as a result, the torque ripple and the cogging torque can be reduced as compared with the conventional case.

The invention according to claim 2 is the accessory drive system 1C~1E according to claim 1, three electrical angles [theta] s, .theta.a, .theta.b the two electrical angles [theta] s, one of .theta.a is the electric angle .theta.b The electrical angle is larger by π, and the other of the two electrical angles θs and θa is configured to be smaller than the electrical angle θb by the electrical angle π.

  According to this accessory driving device, the rotating machine of the accessory driving device according to claim 2 can be realized.

  Hereinafter, an accessory drive apparatus according to a first embodiment of the present invention will be described with reference to the drawings. In the following description, the left side and the right side in FIG. 1 are referred to as “left” and “right”, respectively. As shown in the figure, an auxiliary machine drive device 1 of this embodiment includes an ECU 2, an engine 3 mounted on a vehicle (not shown), an auxiliary machine 4 driven by the power of the engine 3, an engine 3 and an auxiliary machine. A rotating machine 10 provided between the machines 4 and mechanically coupled to both is provided.

  The ECU 2 is for controlling the rotating machine 10, the engine 3, and the like, and includes a microcomputer (not shown) including a RAM, a ROM, a CPU, an I / O interface, and the like.

  The ECU 2 is connected to a crank angle sensor 20, a pulley angle sensor 21, a PDU 30, and the like. The crank angle sensor 20 detects the rotational angle position of the crankshaft of the engine 3 and outputs a detection signal representing it to the ECU 2. In the case of the present embodiment, the ECU 2 calculates a rotational angle position of the second rotor 15 and a second rotor electrical angle θ2, which will be described later, based on the detection signal of the crank angle sensor 20.

  Further, the pulley angle sensor 21 detects a rotational angle position of a drive pulley 7 to be described later, and outputs a detection signal representing it to the ECU 2. In the case of the present embodiment, the ECU 2 calculates a rotational angle position of the first rotor 14 described later, a first rotor electrical angle θ1, and the like based on the detection signal of the pulley angle sensor 21. Further, the PDU 30 is configured by an electric circuit including an inverter and the like, and is connected to the rotating machine 10 and the battery 31. As will be described later, the ECU 2 controls the operation of the rotating machine 10 via the PDU 30 based on the detection signals of the two sensors 20 and 21, thereby controlling the driving state of the auxiliary machine 4.

  On the other hand, the engine 3 is a multi-cylinder internal combustion engine that uses gasoline as fuel, and its operating state is controlled by the ECU 2. Moreover, the auxiliary machine 4 is comprised with the compressor of the vehicle air conditioner, and has the rotating shaft 4a. The rotating shaft 4a is rotatably supported by a bearing 4b, and a driven pulley 5 is concentrically fixed to a tip portion thereof.

  The driven pulley 5 is configured as a toothed pulley that meshes with the teeth of the belt 6, and the belt 6 is stretched between the driven pulley 5 and a drive pulley 7 described later. As a result, the driven pulley 5 rotates with the rotation of the driving pulley 7 and the auxiliary machine 4 is driven.

  Next, the rotating machine 10 will be described with reference to FIGS. 2 and 3. FIG. 2 schematically shows a cross-sectional configuration of the rotating machine 10, and FIGS. 3A to 3C are respectively the AA line, the BB line, and the CC line of FIG. A part of the cross section broken along the circumferential direction at a position is schematically shown. In both figures, the hatching of the cross section is omitted for easy understanding.

  As shown in FIG. 2, the rotating machine 10 is housed in a case 11 fixed to a drive train housing (not shown) of the vehicle, an input shaft 12 and an output shaft 13 concentric with each other, and output. A first rotor 14 that rotates integrally with the shaft 13, a second rotor 15 that is housed in the case 11 and rotates integrally with the input shaft 12, a stator 16 that is fixed to the inner peripheral surface of the peripheral wall 11 c of the case 11, etc. It has. The first rotor 14, the second rotor 15, and the stator 16 are arranged concentrically from the inner side toward the outer side in the radial direction.

  The case 11 includes left and right side walls 11a and 11b, and a cylindrical peripheral wall 11c fixed to the outer peripheral ends of the side walls 11a and 11b. Bearings 11d and 11e are respectively attached to the center portions of the left and right side walls 11a and 11b, and the input shaft 12 and the output shaft 13 are rotatably supported by these bearings 11d and 11e, respectively. Further, the axial movement of the two shafts 12 and 13 is restricted by a thrust bearing (not shown) or the like.

  The input shaft 12 has a left end portion directly connected to the crankshaft of the engine 3, and a second rotor 15 is concentrically fixed to the right end portion. Thereby, the second rotor 15 is driven by the power of the engine 3 during operation of the engine 3. Further, the first rotor 14 is concentrically fixed to the left end portion of the output shaft 13, and the drive pulley 7 is concentrically fixed to the right end portion. Thereby, when the first rotor 14 is rotating during operation of the rotating machine 10, the drive pulley 7 is driven by the power of the rotating machine 10.

  On the other hand, the first rotor 14 includes a rotating disc portion 14a concentrically fixed to the left end portion of the output shaft 13, a cylindrical ring portion 14b fixed to the outer end portion of the rotating disc portion 14a, and the like. . The ring portion 14b is made of a soft magnetic material, and a permanent magnet row is provided along the circumferential direction on the outer peripheral surface thereof. This permanent magnet array is composed of 2n (n is an integer) permanent magnets 14c, and each of these two adjacent permanent magnets 14c (magnetic poles) has a polarity different from each other and corresponds to an electrical angle π. Are arranged at intervals of a predetermined angle (see FIGS. 3A to 3C). Each permanent magnet 14c has a predetermined width in the left-right direction.

  Further, the stator 16 includes a ring-shaped attachment portion 16a attached to the inner peripheral surface of the peripheral wall 11c of the case 11, and three first to first attachments provided along the circumferential direction on the inner peripheral surface of the attachment portion 16a. It has 3 armature rows. These first to third armature rows generate a rotating magnetic field, are arranged in order from the engine 3 side toward the drive pulley 7 side, and are electrically connected to a PDU 30 described later. .

  Further, the first armature row is composed of 3n first armatures 17, and these first armatures 17 have a predetermined angle corresponding to an electrical angle of 2π / 3 on the inner peripheral surface of the mounting portion 16a. They are arranged at intervals (see FIG. 3A). Each of the first armatures 17 includes an iron core 17a, a coil 17b wound around the iron core 17a by concentrated winding, and the 3n coils 17b include n sets of U phase, V phase, and W phase. The three-phase coil is configured.

  The first armature train is configured such that a magnetic pole is generated at the inner end of the iron core 17a by controlling the input / output state of power to the first armature 17 by the ECU 2. With the generation of the magnetic poles, the first rotating magnetic field is generated so as to rotate along the first armature array with the permanent magnet array of the first rotor 14. Hereinafter, the magnetic pole generated at the inner end of the iron core 17a is referred to as a “first armature magnetic pole”. The number of the first armature magnetic poles is controlled by the ECU 2 so as to be the same number as the magnetic poles of the permanent magnet 14c (that is, 2n).

  Further, the second armature row is composed of 3n second armatures 18, and these second armatures 18 have a predetermined angle corresponding to an electrical angle of 2π / 3 on the inner peripheral surface of the mounting portion 16 a. They are arranged at intervals (see FIG. 3B). Each of the second armatures 18 includes an iron core 18a, a coil 18b wound around the iron core 18a by concentrated winding, and the 3n coils 18b include n sets of U phase, V phase, and W phase. The three-phase coil is configured.

  The second armature train is also configured such that a magnetic pole is generated at the inner end of the iron core 18a by controlling the input / output state of power to the second armature 18 by the ECU 2. With the generation of the magnetic poles, the second rotating magnetic field is generated so as to rotate along the second armature row between the permanent magnet row of the first rotor 14. Hereinafter, the magnetic pole generated at the inner end of the iron core 18a is referred to as a “second armature magnetic pole”. The number of these second armature magnetic poles is controlled by the ECU 2 so as to be the same as the number of magnetic poles of the permanent magnet 14c (that is, 2n), similarly to the number of the first armature magnetic poles.

  The third armature row is composed of 3n third armatures 19, and these third armatures 19 have a predetermined angle corresponding to an electrical angle of 2π / 3 on the inner peripheral surface of the mounting portion 16a. They are arranged at intervals (see FIG. 3C). Each of the third armatures 19 includes an iron core 19a and a coil 19b wound around the iron core 19a by concentrated winding. The 3n coils 19b include n sets of U phase, V phase, and the like. A W-phase three-phase coil is formed.

  This third armature row is also configured to generate magnetic poles at the inner end of the iron core 19a by controlling the input / output state of power to the third armature 19, and these magnetic poles Along with the generation, a third rotating magnetic field is generated so as to rotate along the third armature row between the permanent magnet row of the first rotor 14. Hereinafter, the magnetic pole generated at the inner end of the iron core 19a is referred to as a “third armature magnetic pole”. The number of these third armature magnetic poles is controlled by the ECU 2 so as to be the same as the number of magnetic poles of the permanent magnet 14c (that is, 2n), similarly to the number of the first and second armature magnetic poles.

  In the above first to third armature rows, as shown in FIGS. 3A to 3C, each of the three-phase coils of the second armature row is each of the three-phase coils of the first armature row. On the other hand, each of the three-phase coils of the third armature array is arranged in a state shifted by an angle corresponding to the electrical angle 2π / 3 toward the lower side of the figure. Each of the phase coils is arranged in a state shifted by an angle corresponding to an electrical angle of 2π / 3 toward the lower side of the figure.

  In the stator 16 of the rotating machine 10, a back yoke (not shown) is provided in order to prevent magnetic flux from leaking between the first armature row, the second armature row, and the third armature row. It is installed so that a magnetic short circuit does not occur between the three armature rows.

  On the other hand, the second rotor 15 includes a turntable portion 15d fixed to the right end portion of the input shaft 12, a support portion 15e extending from the outer end portion of the turntable portion 15d toward the drive pulley 7, and the support portion 15e. The first to third soft magnetic core rows are fixed and arranged between the permanent magnet row of the first rotor 14 and the first to third armature rows of the stator 16. Each of the first to third soft magnetic core arrays is composed of 2n first to third soft magnetic cores 15a to 15c (soft magnetic bodies) made of a soft magnetic body (for example, a laminated body of steel plates). Has been.

  First soft magnetic cores (hereinafter referred to as “first cores”) 15a are provided along the circumferential direction between the first armature array and the permanent magnet array at a predetermined angle interval corresponding to the electrical angle π. In addition, the radial gap between the permanent magnet row and the permanent magnet 14c is equal to the radial gap between the first armature row and the iron core 17a. The second soft magnetic core (hereinafter referred to as “second core”) 15b is provided along the circumferential direction between the second armature row and the permanent magnet row at a predetermined angle interval corresponding to the electrical angle π. In addition, the radial gap between the permanent magnet row and the permanent magnet 14c is equal to the radial gap between the second armature row and the iron core 18a.

  Further, a third soft magnetic core (hereinafter referred to as “third core”) 15c is provided along the circumferential direction between the third armature array and the permanent magnet array at a predetermined angle interval corresponding to the electrical angle π. In addition, the radial gap between the permanent magnet row and the permanent magnet 14c is equal to the radial gap between the third armature row and the iron core 19a. Further, in the first to third cores 15a to 15c described above, each of the second cores 15b is an angle corresponding to the electrical angle π / 3 on the lower side of FIG. 3 with respect to each of the first cores 15a. Each of the third cores 15c is arranged in a state of being shifted by an angle corresponding to the electrical angle π / 3 on the lower side of the figure with respect to each of the second cores 15b. .

  Next, in order to explain the operating principle of the rotating machine 10 configured as described above, first, the rotating machine 40 shown in FIG. 4 will be described. The rotating machine 40 is the one used by the present applicant in the auxiliary machine driving device of Patent Document 1. 5 is a schematic development of a part of a cross-section broken along the circumferential direction at the position of line DD in FIG. 4, and FIG. 6 shows a configuration equivalent to FIG. It is.

  As shown in FIG. 4, the rotating machine 40 includes a case 46, two bearings 47 and 47 fixed to the case 46, and a first shaft 41 and a first shaft 41 rotatably supported by the bearings 47 and 47, respectively. A predetermined interval is provided between the second shaft 42, the first rotor 43 provided in the case 46, the stator 44 provided in the case 46 so as to face the first rotor 43, and the two 43, 44. The second rotor 45 provided in the existing state is provided. The first rotor 43, the second rotor 45, and the stator 44 are arranged in this order from the inner side to the outer side in the radial direction of the first shaft 41. The two shafts 41 and 42 are arranged concentrically with each other.

  The first rotor 43 has 2n first permanent magnets 43a and second permanent magnets 43b, and the first and second permanent magnets 43a and 43b are respectively in the circumferential direction of the first shaft 41 (hereinafter simply referred to as the first permanent magnet 43a). They are lined up at equal intervals in the “circumferential direction”. The first and second permanent magnets 43a and 43b are attached to the outer peripheral surface of the ring-shaped fixing portion 43c in the axial direction and in contact with each other. With the above configuration, the first and second permanent magnets 43 a and 43 b are rotatable integrally with the first shaft 41.

  As shown in FIGS. 5 and 6, the pitch between the two first and second permanent magnets 43a and 43b adjacent to each other in the circumferential direction around the first axis 41 is set to an electrical angle π. ing. Further, the polarities of the first and second permanent magnets 43a and 43b are the same in the axial direction, and are different from each other in the two adjacent in the circumferential direction. Hereinafter, the magnetic poles of the first and second permanent magnets 43a and 43b are referred to as “first magnetic pole” and “second magnetic pole”, respectively.

  The stator 44 generates the first and second rotating magnetic fields, and has 3n armatures 44a arranged at equal intervals in the circumferential direction. Each armature 44a includes an iron core 44b and a coil 44c wound around the iron core 44b in a concentrated manner. A groove 44d extending in the circumferential direction is formed in the central portion in the axial direction of the inner peripheral surface of the iron core 44b. The 3n coils 44c constitute n sets of U-phase, V-phase, and W-phase three-phase coils (see FIGS. 5 and 6). The armature 44a is attached to the inner peripheral surface of the peripheral wall 46a of the case 46 via a ring-shaped fixing portion 44e.

  Further, the armature 44a is connected to a variable power source (not shown), and when power is supplied from the variable power source, the armatures 44a are different from each other at the ends of the iron core 44b on the first and second permanent magnets 43a, 43b side. Polarity magnetic poles are respectively generated. As these magnetic poles are generated, the first and second rotating magnetic fields are generated between the first rotor 43 and the second permanent magnet 43b. Each occurs to rotate in the direction. Hereinafter, the magnetic poles generated at the ends of the iron core 44b on the first and second permanent magnets 43a and 43b side are referred to as “first armature magnetic pole” and “second armature magnetic pole”, respectively. The first and second armature magnetic poles are set to the same number (that is, 2n) as the magnetic poles of the first permanent magnet 43a.

  The second rotor 45 has the same number (namely, 2n) of first soft magnetic cores (hereinafter referred to as “first cores”) 45a and second soft magnetic cores (hereinafter referred to as “second cores”) as the first permanent magnets 43a. 45b). These cores 45a and 45b are arranged in the circumferential direction at intervals of a predetermined angle corresponding to the electrical angle π, and the phase difference between them is shifted by an angle corresponding to the electrical angle π / 2. The first and second cores 45a and 45b are both made of a soft magnetic material (specifically, a laminate of a plurality of steel plates).

  The first and second cores 45a and 45b are respectively attached to the outer ends of the disc-shaped flange 45e via rod-shaped connecting portions 45c and 45d that slightly extend in the axial direction. The shaft 42 is integrally formed concentrically. With the above configuration, the first and second cores 45 a and 45 b are rotatable together with the second shaft 42.

  In the case of the rotating machine 40 described above, as described in Patent Document 1, the input / output relationship of energy between the two rotors 43 and 45 and the stator 44, the rotational speed of the rotors 43 and 45, and the rotating magnetic field The rotating machine 40 can be controlled such that the relationship between the rotational speeds shows the same operating characteristics as the relationship between the torques and the rotational speeds of the three members (sun gear, ring gear, and planetary carrier) in the planetary gear device.

  Next, a method for deriving a voltage equation of the rotating machine 40 configured as described above will be described. In the case of the rotating machine 40, the configuration of the stator 44 is the same as that of a general one-rotor type brushless DC motor, whereas not only the first rotor 43 configured by a permanent magnet or the like but also a soft magnet. The difference is that it has a second rotor 45 made of a magnetic material or the like. From this, the voltages for the U-phase to W-phase currents Iu, Iv, and Iw are substantially the same as in the case of a general brushless DC motor, but as the first and second rotors 43 and 45 rotate. Thus, the counter electromotive voltage (that is, counter electromotive force and induced electromotive force) generated in the U-phase to W-phase coil 44c is different from that of a general brushless DC motor.

ここで、Ψｆｂは、各相のコイル４４ｃを直接、通過する第１永久磁石４３ａの磁束の最大値である。また、θｅ１は、第１ロータ電気角であり、基準となるステータ４４の１つの電機子４４ａ（以下「基準電機子」という）に対する第１ロータ４３の回転角を電気角で表したものである。この第１ロータ電気角θｅ１は、具体的には、図示しない回転角センサを用いて第１ロータ４３の回転角を検出し、その検出値を電気角に変換することによって算出される。 Specifically, this counter electromotive voltage is obtained as described below. FIG. 7 corresponds to this rotating machine structure when the 2n first permanent magnets 43a, the 2n first cores 45a, and the 3n armatures 44a have a single rotating machine structure (that is, an electric motor structure). An example of an equivalent circuit is shown. In addition, although the figure has shown the case where the number of poles = 2 for convenience, the number of poles of the rotary machine 40 is 2n as mentioned above. In this case, the magnetic fluxes Ψua1, Ψva1, and Ψwa1 of the first permanent magnet 43a that directly pass through the U-phase to W-phase coils 44c without using the first core 45a are expressed by the following equations (1) to (3). Each is represented.

Here, Ψfb is the maximum value of the magnetic flux of the first permanent magnet 43a that directly passes through the coil 44c of each phase. In addition, θe1 is a first rotor electrical angle, and represents a rotation angle of the first rotor 43 with respect to one armature 44a of the stator 44 serving as a reference (hereinafter referred to as “reference armature”) as an electrical angle. . Specifically, the first rotor electrical angle θe1 is calculated by detecting the rotation angle of the first rotor 43 using a rotation angle sensor (not shown) and converting the detected value into an electrical angle.

ここで、Ψｆａは、第１コア４５ａを介して各相のコイル４４ｃを通過する第１永久磁石４３ａの磁束の最大値である。また、θｅ２は、第２ロータ電気角であり、上記基準電機子に対する第２ロータ４５の回転角を電気角で表したものである。この第２ロータ電気角θｅ２は、具体的には、図示しない回転角センサを用いて第２ロータ４５の回転角を検出し、その検出値を電気角に変換することによって算出される。 Further, the magnetic fluxes Ψua2, Ψva2, and Ψwa2 of the first permanent magnet 43a passing through the U-phase to W-phase coils 44c via the first core 45a are expressed by the following expressions (4) to (6), respectively.

Here, ψfa is the maximum value of the magnetic flux of the first permanent magnet 43a passing through the coil 44c of each phase through the first core 45a. Θe2 is a second rotor electrical angle, and represents the rotation angle of the second rotor 45 with respect to the reference armature as an electrical angle. Specifically, the second rotor electrical angle θe2 is calculated by detecting the rotation angle of the second rotor 45 using a rotation angle sensor (not shown) and converting the detected value into an electrical angle.

The magnetic fluxes Ψua, Ψva, Ψwa of the first permanent magnet 43a that respectively pass through the U-phase to W-phase coils 44c are the same as the magnetic fluxes Ψua1, Ψva1, Ψwa1 that pass directly through the U-phase to W-phase coil 44c described above. The sum of the magnetic fluxes Ψua2, Ψva2, and Ψwa2 passing through one core 45a, that is, (Ψua1 + Ψua2), (Ψva1 + Ψva2), and (Ψwa1 + Ψwa2), respectively. Therefore, these magnetic fluxes Ψua, Ψva, Ψwa are expressed by the following expressions (7) to (9) from the above expressions (1) to (6), respectively.

Further, when these formulas (7) to (9) are modified, the following formulas (10) to (12) are obtained.

ここで、ωｅ２は、θｅ２の時間微分値、すなわち、第２ロータ４５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）であり、ωｅ１は、θｅ１の時間微分値、すなわち、第１ロータ４３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）である。 Further, by differentiating the magnetic flux Ψua, Ψva, Ψwa of the first permanent magnet 43a passing through the U-phase to W-phase coils 44c with time, the first permanent magnet 43a and / or the first core 45a is rotated. Back electromotive voltages (hereinafter referred to as “first U phase back electromotive voltage Vcu1”, “first V phase back electromotive voltage Vcv1”, and “first W phase back electromotive voltage Vcw1”) respectively generated in the U-phase to W-phase coils 44c are obtained. It is done. Therefore, the back electromotive voltages Vcu1, Vcv1, and Vcw1 of the first U phase to the W phase are respectively expressed by the following equations (13) to (15) obtained by time differentiation of the equations (10) to (12). Is done.

Here, ωe2 is a time differential value of θe2, that is, a value obtained by converting the angular velocity of the second rotor 45 into an electrical angular velocity (hereinafter referred to as “second rotor electrical angular velocity”), and ωe1 is a time differential value of θe1. That is, a value obtained by converting the angular velocity of the first rotor 43 into an electrical angular velocity (hereinafter referred to as “first rotor electrical angular velocity”).

  FIG. 8 shows an equivalent circuit corresponding to the rotating machine structure when the 2n second permanent magnets 43b, the 2n second cores 45b, and the 3n armatures 44a have a set of rotating machine structures. An example is shown. In this case, the counter electromotive voltage generated in the U-phase to W-phase coil 44c with the rotation of the second permanent magnet 43b and / or the second core 45b is the case of the first permanent magnet 43a and the first core 45a described above. Similarly to the above, it is obtained as follows. Hereinafter, the counter electromotive voltages generated in the U-phase to W-phase coils 44c are referred to as “second U-phase counter electromotive voltage Vcu2”, “second V-phase counter electromotive voltage Vcv2”, and “second W-phase counter electromotive voltage Vcw2,” respectively.

That is, since the first and second permanent magnets 43a and 43b are integral with each other as described above, the maximum value of the magnetic flux of the second permanent magnet 43b that directly passes through the coil 44c of each phase is the coil 44c of each phase. Is equal to the maximum value of the magnetic flux of the first permanent magnet 43a passing directly through the second core 45b, and the maximum value of the magnetic flux of the second permanent magnet 43b passing through the coil 44c of each phase via the second core 45b is It is equal to the maximum value of the magnetic flux of the first permanent magnet 43a passing through the coil 44c of each phase through 45a. Further, as described above, the electrical angle between the first and second cores 45a and 45b is shifted from the electrical angle π / 2 (see FIG. 8). From the above, the magnetic fluxes Ψub, Ψvb, Ψwb of the second permanent magnet 43b that passes through the U-phase to W-phase coils 44c (that is, the magnetic flux that passes through the second core 45b, and the magnetic flux that passes directly without going through the second core 45b). Is represented by the following expressions (16) to (18).

Further, when these equations (16) to (18) are modified, the following equations (19) to (21) are obtained.

Further, the second U-phase to W-phase counter electromotive voltages Vcu2, Vcv2, and Vcw2 are obtained by time-differentiating the magnetic fluxes Ψub, Ψvb, and Ψwb of the second permanent magnet 43b that respectively pass through the U-phase to W-phase coils 44c. Are obtained respectively. Therefore, these back electromotive voltages Vcu2, Vcv2, and Vcw2 are respectively expressed by the following equations (22) to (24) obtained by differentiating the equations (19) to (21) with respect to time.

Further, as described above, the stator 44 is configured such that magnetic poles having different polarities are generated at the ends of the iron core 44b on the first and second permanent magnets 43a, 43b side. Furthermore, the polarities of the first and second permanent magnets 43a and 43b arranged in the axial direction are the same. As is clear from these facts, the electrical angles of the first and second permanent magnets 43a and 43b arranged in the axial direction are shifted from each other by the electrical angle π. Therefore, the counter electromotive voltages Vcu, Vcv, and Vcw generated in the U-phase to W-phase coils 44c as the first and / or second rotors 43 and 45 rotate are respectively the first U-phase to W-phase described above. Difference between the counter electromotive voltages Vcu1, Vcv1, and Vcw1 of the second phase and the counter electromotive voltages Vcu2, Vcv2, and Vcv2 of the second U phase to the W phase, that is, (Vcu1−Vcu2), (Vcv1−Vcv2), and (Vcw1−Vcw2) Become. Therefore, these back electromotive voltages Vcu, Vcv, and Vcw are expressed by the following equations (25) to (27) from the equations (13) to (15) and the equations (22) to (24).

Here, assuming that the total amount of magnetic flux of the entire rotating machine 40 is Ψ, Ψ = 2 · Ψfa is established. When this is applied to the above expressions (25) to (27), the following expressions (28) to (30) are satisfied. Is obtained.

The voltages of the U-phase to W-phase coils 44c (hereinafter referred to as “U-phase voltage Vu”, “V-phase voltage Vu”, and “W-phase voltage Vw”, respectively) are U-phase to W-phase currents Iu, Iv, and Iw. And the sum of the back electromotive voltages Vcu, Vcv, and Vcw of the U-phase to W-phase coils 44c. Therefore, the voltage equation of the rotating machine 40 is represented by the following equation (31).

  Here, Ru, Rv, and Rw are the resistances of the U-phase to W-phase coils 44c, respectively, and Lu, Lv, and Lw are the self-inductances of the U-phase to W-phase coils 44c, respectively. is there. Further, Muv is a mutual inductance between the U-phase coil 44c and the V-phase coil 44c, Mvw is a mutual inductance between the V-phase coil 44c and the W-phase coil 44c, and Mwu is the same as the W-phase coil 44c. These are mutual inductances between the U-phase coils 44c, and both are predetermined values. Furthermore, s is a differential operator.

  Further, as apparent from the above equation (31), (2θe2-θe1) and (2ωe2-ωe1) of the equation (31) are expressed as the electric angle θe and the electric angular velocity of the rotor of a general brushless DC motor. The mathematical expressions replaced with ωe correspond to the voltage equation of a general brushless DC motor in which the amount of magnetic flux is set to ½. From this, in order to operate the rotating machine 40, it can be understood that the electrical angle θx of the vectors of the first and second rotating magnetic fields described above should be controlled so that θx = (2θe2−θe1) is satisfied. . The above points are true regardless of the number of poles and the number of phases of the coil 44c.

  On the other hand, in the case of the rotating machine 10 according to this embodiment, as described above, the ECU 2 controls the input / output state of the power to the first to third armatures 17 to 19, so that the first to third rotations. Magnetic field is generated. Here, in the configuration of the rotating machine 10, the rotation radius of the permanent magnet 14 c and the first to third cores 15 a to 15 c, and the rotation radius of the first to third rotating magnetic fields in the first to third armatures 17 to 19, Is assumed to be infinitely large, the permanent magnet 14c, the three cores 15a to 15c move linearly, and the magnetic fields of the three armatures 17 to 19 can also be considered to move linearly. 3 described above can be regarded as equivalent to the configuration of FIG.

  Furthermore, in the configuration of FIG. 9, when the first to third rotating magnetic fields are replaced with the rotation of the three virtual magnets 17x to 19x as shown in FIG. 10, in this embodiment, the magnetic poles of the virtual magnets 17x to 19x (that is, The power supplied to the first to third armatures 17 to 19 is controlled so that the relationship shown in FIG. 10 is established in the polarities of the first to third armature magnetic poles) and the phases thereof. In addition, the magnetic poles shown in black in the figure represent the magnetic poles of the permanent magnet, and this point is the same in the following drawings.

  As is apparent from FIG. 10, in the case of the first to third cores 15a to 15c, the two adjacent cores are shifted by an electrical angle of π / 3 downward in the figure. That is, the first to third cores 15a to 15c are skewed. Further, in the case of the magnetic poles of the virtual magnets 17x to 19x, that is, the first to third armature magnetic poles, the two magnetic poles adjacent to each other are controlled to be shifted to the lower side of the figure by an electrical angle of 2π / 3.

  Here, when the above-described permanent magnet row, first soft magnetic core row, and first armature row have a single rotating machine structure (hereinafter referred to as “first rotating machine structure”), this first rotating machine structure. An example of an equivalent circuit corresponding to is shown in FIG. Further, when the permanent magnet array, the second soft magnetic core array, and the second armature array have a set of rotating machine structures (hereinafter referred to as “second rotating machine structure”), this corresponds to the second rotating machine structure. An example of an equivalent circuit is shown in FIG.

  Further, when the permanent magnet array, the third soft magnetic core array, and the third armature array have a single rotating machine structure (hereinafter referred to as “third rotating machine structure”), this corresponds to the third rotating machine structure. An example of an equivalent circuit is shown in FIG. 11 to 13 exemplify the case where the number of poles = 2 for convenience. In each of the three rotating machine structures as described above, when a rotating magnetic field is generated, a magnetic circuit (not shown) is formed between the permanent magnet, the soft magnetic core, and the armature of each rotating machine structure. .

Next, the counter electromotive voltage of the rotating machine 10 having the above three rotating machine structure will be described. When the first and second rotors 14 and 15 rotate, the magnetic fluxes Ψu1 to Ψu3 that appear in the U phases of the three rotating machine structures are as shown in the following equations (32) to (34).

  Here, ψf is the maximum value of the magnetic flux of the permanent magnet 14c that passes through the three U-phase coils 17b to 19b via the three cores 15a to 15c. In addition, θ1 is a first rotor electrical angle, and represents the rotation angle of the first rotor 14 with respect to the reference position as an electrical angle. Furthermore, θ2 is the second rotor electrical angle, and represents the rotation angle of the second rotor 10 with respect to the reference position as an electrical angle. These electrical angles θ1 and θ2 are calculated based on detection signals from the pulley angle sensor 21 and the crank angle sensor 20, respectively. In addition, ω1 and ω2 represent time differential values of the two electrical angles θ1 and θ2, respectively.

Next, by applying the product-sum formula of trigonometric function cos α cos β = (1/2) {cos (α + β) + cos (α−β)} to the above equations (32) to (34), the following equations (35) to (37) Is obtained.

Here, since the magnetic flux Ψu appearing in the entire U phase of the rotating machine 10 is the sum of the three Ψu1 to Ψu3, the magnetic flux Ψu is calculated by the following equation (38).

The following equations (39) and (40) are obtained by deriving the equations for calculating the magnetic fluxes Ψv and Ψw appearing in the entire V phase and W phase of the rotating machine 10 by the same method as the method for deriving the above formula for calculating the magnetic flux Ψu. It is done.

Here, the magnetic flux of the permanent magnet 14c that passes directly through the three U-phase coils 17b to 19b without passing through the three cores 15a to 15c is extremely small, and its influence can be ignored. Similarly, the magnetic flux of the permanent magnet 14c directly passing through the V-phase coils 17b to 19b and the W-phase coils 17b to 19b without passing through the three cores 15a to 15c is also extremely small, and the influence can be ignored. . For the above reasons, the counter electromotive voltages of the U phase, the V phase, and the W phase respectively correspond to values dΨu / dt, dΨv / dt, dΨw / dt obtained by time-differentiating the magnetic fluxes Ψu, Ψv, Ψw. Thus, the U-phase, V-phase and W-phase back electromotive force calculation formulas are derived as the following formulas (41) to (43) by time-differentiating the above formulas (38) to (40).

Here, assuming that the total amount of magnetic flux of the entire rotating machine 10 is ψ, ψ = 3 · ψf is established. Therefore, when this is applied to the equations (41) to (43), the following equations (44) to (46) are obtained. can get.

  The above formulas (44) to (46) for the counter electromotive voltages dΨu / dt, dΨv / dt, dΨw / dt are calculated from the above formulas (28) to (28) for the counter electromotive voltages Vcu, Vcv and Vcw of the rotating machine 40. Compared with 30), it can be seen that both are the same.

  Therefore, also in the case of the rotating machine 10, by controlling the electric angle θy of the vectors of the first to third rotating magnetic fields described above so that θy = (2θ2−θ1) is established, Similar to the rotating machine 40, it can be operated to exhibit the same operating characteristics as the planetary gear unit.

  Next, the cogging torque in the rotating machine 10 configured as described above will be described with reference to FIGS. 14 and 15. FIG. 14 shows a state in which cogging torque is generated when the first rotor 14 is rotated in the rotating machine 10, and Trq <b> 1 to Trq <b> 3 in FIGS. The cogging torque component in the third rotating machine structure is represented, and TrqR represents a positive predetermined value. Further, Trq4 in FIG. 4D represents the sum of the three cogging torque components Trq1 to Trq3, that is, the cogging torque of the entire rotating machine 10.

  On the other hand, FIG. 15 shows the generation state of cogging torque in the above-described rotating machine 40 for comparison, and TrqA and TrqB in FIGS. The cogging torque component in the pair of rotating machine structures is represented, and TrqC in FIG. 3C represents the sum of the two cogging torque components TrqA and TrqB, that is, the cogging torque of the entire rotating machine 40.

  As is clear from comparison between the two figures, the amplitude of the cogging torque components Trq1 to Trq3 of the rotating machine 10 is 2/3 times the amplitude ± TrqR of the cogging torque components TrqA and TrqB of the rotating machine 40 [ It can be seen that it decreases to ± (2/3) · TrqR]. This is because, in the case of the rotating machine 10, three sets of rotating machine structures are provided, and therefore, compared to the rotating machine 40 having two sets of rotating machine structures, the amount of magnetic flux in each set of rotating machine structures is 2/3. Because it becomes. For the same reason, the torque ripple in the rotating machine 10 is reduced to 2/3 compared to the rotating machine 40.

  Furthermore, it can be seen that the cogging torque Trq4 of the entire rotating machine 10 is reduced to a value considerably smaller than the cogging torque TrqC of the entire rotating machine 40 because the three cogging torque components Trq1 to Trq3 overlap each other and cancel each other. . As described above, in the case of the rotating machine 10, the three cogging torque components Trq <b> 1 to Trq <b> 3 are provided by providing three sets of rotating machine structures as compared to the rotating machine 40 including only two sets of rotating machine structures. The amplitude can be reduced to a value of 2/3, and they can be configured to overlap and cancel each other. As a result, the cogging torque and the torque ripple can be significantly reduced as compared with the rotating machine 40.

  Next, the operation of the accessory drive device 1 will be described with reference to FIG. In the following description, the rotational speed of the drive pulley 7 (ie, the first rotor 14) is referred to as “pulley rotational speed VP”, and the rotational speed of the crankshaft (ie, the second rotor 15) is referred to as “crankshaft rotational speed VC”. The rotational speed of the rotating magnetic field of the stator 16 is referred to as “magnetic field rotational speed VS”. The magnetic field rotation speed VS is obtained when the first to third rotation magnetic fields in the stator 16 are controlled to the same rotation speed, and the value VREF in FIG. The optimum predetermined value of the pulley rotational speed VP is represented.

  In this case, as described above, the rotating machine 10 can be operated so as to exhibit the same operating characteristics as the planetary gear device, and more specifically, between the three rotational speeds VP, VC, VS. It is configured to be operable so that the relationship VC = (VP + VS) / 2 is established. Therefore, when the engine is stopped and VC = 0, the rotating machine 10 can be operated so that the relationship shown in FIG. That is, the pulley rotation speed VP can be controlled to the predetermined value VREF by controlling the magnetic field rotation speed VS so that VS = −VREF.

  Further, during operation of the engine 3, the second rotor 15 rotates as the crankshaft rotates. Therefore, when the ECU 2 controls the current flowing through the stator 16 via the PDU 30, an induced electromotive force is generated in the stator 16. Power generation is performed. Thereby, even when no electric power is supplied to the stator 16, due to the induced electromotive force, as shown in FIGS. 16B and 16C, the rotating magnetic field of FIG. A rotating magnetic field that rotates in the opposite direction is generated.

  As a result, the auxiliary machine 4 can be driven while charging the battery 31 with the electric power generated in the stator 16. That is, the auxiliary machine 4 can be driven while executing power regeneration. In particular, as shown in FIG. 16B, even when the engine 3 is operated at a low speed, as shown in FIG. 16C, it flows through the stator 16 even when the engine 3 is operated at a high speed. By appropriately controlling the current, the pulley rotational speed VP can be controlled to be a predetermined value VREF. In other words, regardless of whether the engine speed is high or low, the pulley rotational speed VP can be controlled to a predetermined value VREF that is optimal for driving the accessory 4.

  Further, as indicated by a broken line in FIG. 16D, when the crankshaft rotational speed VC is very small, the pulley rotational speed VP is set to a predetermined value even if the magnetic field rotational speed VS is controlled while the stator 16 performs power regeneration. There are times when it cannot be raised to the value VREF. In such a case, by supplying electric power to the stator 16 and controlling the magnetic field rotational speed VS, the pulley rotational speed VP can be increased to a predetermined value VREF as shown by a solid line in FIG. it can.

  As described above, according to the auxiliary machine drive device 1 of the first embodiment, the auxiliary machine 4 can be driven by the power of the engine 3 and the rotating machine 10. Further, as described above, since the rotating machine 10 includes three sets of rotating machine structures, the conventional auxiliary machine includes only two sets of rotating machine structures for the amplitudes of the three cogging torque components Trq1 to Trq3. The cogging torque components Trq <b> 1 to Trq <b> 3 can be configured to overlap each other and cancel each other as compared with the rotating machine 40 of the driving device. As a result, the cogging torque and the torque ripple can be greatly reduced as compared with the conventional case, and the merchantability can be improved.

  In addition, although 1st Embodiment is an example using the internal combustion engine which uses gasoline as a fuel as a prime mover, the prime mover of this invention is not restricted to this, What is necessary is just a prime mover which produces motive power. For example, an internal combustion engine that uses light oil or natural gas as a fuel, an external combustion engine such as a Stirling engine, or a rotating machine such as an electric motor may be used as a prime mover.

  Moreover, in the 1st rotor 14 of the rotary machine 10 of the auxiliary machinery drive device 1 of 1st Embodiment, it replaces with a permanent magnet row | line | column, and while providing an armature row | line | column, the magnetic pole which generate | occur | produces in these armature row | lines is the permanent magnet 14c. The electric power supplied to the armature train may be controlled so as to be the same as the magnetic poles.

  Further, in the rotating machine 10 of the first embodiment, the permanent magnet row of the first rotor 14 and the armature row of the stator 16 are arranged so as to face each other in the radial direction, and the soft magnetic material row is between them. In the rotating machine of the present invention, the permanent magnet row of the first rotor and the armature row of the stator are arranged so as to face each other in the rotation axis direction of the rotating machine, and between them. The soft magnetic material rows may be arranged.

  On the other hand, in the first to third rotating machine structures of the rotating machine 10, the auxiliary machine driving device 1 of the first embodiment includes the magnetic poles of the permanent magnet 14 c and the three soft magnetic cores 15 a to 15 d during operation of the rotating machine 10. 15c and the power supplied to the first to third armatures 17 to 19 were controlled so that the positional relationship between the magnetic poles generated in the three armatures 17 to 19 became the positional relationship shown in FIG. Although it is an example, the positional relationship between the magnetic pole generated in the armature of the present invention, the magnetic pole of the permanent magnet of the first rotor, and the soft magnetic core of the second rotor is not limited thereto. During operation, in the first to third rotating machine structures, the phase difference of the electrical angle between the magnetic pole generated in the armature and the magnetic pole of the permanent magnet of the first rotor is an electrical angle of 2π with respect to the arrangement direction of the armature. / 3, and the soft magnetic material of the second rotor and the magnetic pole generated in the armature If the power supplied to the three armatures is controlled so that the phase difference of the electrical angle between the armature and the armature is shifted by an electrical angle of π / 3 with respect to the armature arrangement direction. Good.

  For example, the positional relationship among the magnetic pole generated in the armature, the magnetic pole of the permanent magnet of the first rotor, and the soft magnetic core of the second rotor may be configured as shown in FIG. As shown in the figure, in the rotating machine 10X, the first to third cores 15a to 15c of the second rotor 15 are arranged at the same position in the left-right direction in the figure, and instead of the permanent magnet 14c, Three permanent magnets 14c ′ are arranged in a state where two adjacent magnets 14c are shifted by an electrical angle π / 3 with respect to the arrangement direction of the armatures 17-19. In the rotating machine 10X, during the operation, in the first to third rotating machine structures, between the magnetic poles generated in the three armatures 17 to 19, that is, the magnetic poles of the virtual magnets 17x to 19x and the magnetic pole of the permanent magnet 14c ′. The electrical angle phase difference between the first and third cores 15a to 15c and the magnetic poles of the virtual magnets 17x to 19x and the first to third cores 15a to 15c are shifted from each other by an electrical angle of 2π / 3 with respect to the arrangement direction of the armatures 17 to 19. The electric power supplied to the first to third armatures 17 to 19 is such that the phase of the electrical angle between the first and third armatures 17 to 19 is shifted by an electrical angle of π / 3 with respect to the arrangement direction of the armatures 17 to 19. Be controlled. Even in such a configuration, the relationship of θy = (2θ2−θ1) is established at the three electrical angles θy, θ1, and θ2, and thus the same operation as that when the rotating machine 10 of the first embodiment is used. An effect can be obtained.

  On the other hand, in the three rotating machine structures shown in FIG. 10, the permanent magnet 14c and the magnetic poles of the three armatures 17 to 19 may be interchanged in the left-right direction. In addition, the permanent magnet 14c may be divided into three permanent magnets, and these permanent magnets may be arranged in a skewed manner along the rotational direction of the rotating machine 10 instead of the same position in the left-right direction in FIG. Even in the above case, in the three rotating machine structures, the electric power supplied to the first to third armatures 17 to 19 is controlled so that the relationship of the electrical angle deviation is established, as shown in FIG. The same effect as the rotating machine 10 having three rotating machine structures can be obtained.

  Moreover, although the rotary machine 10 of the auxiliary drive device 1 of 1st Embodiment is an example which has arrange | positioned the 1st-3rd rotary machine structure as shown in FIG. 10, these 1st-3rd rotary machine structure is these. It may be arranged differently. For example, while ensuring the same operating state as the rotating machine 10 of the first embodiment, the first to third rotating machine structures are arranged in the order of the second rotating machine structure → the third rotating machine structure → the first rotating machine structure. Alternatively, the first rotating machine structure, the third rotating machine structure, and the second rotating machine structure may be arranged in this order.

  Furthermore, the rotating machine 10 of the auxiliary machine drive device 1 according to the first embodiment is an example in which one magnetic pole in the first rotor 14 is composed of one permanent magnet, but one magnetic pole is composed of a plurality of permanent magnets. You may comprise with a magnetic pole. For example, when the magnetic poles of two permanent magnets are arranged in a V shape to form one magnetic pole, the directivity of the lines of magnetic force can be increased.

  In addition, the rotating machine 10 of the auxiliary machine drive device 1 of the first embodiment is an example in which the coils of the armatures 17 to 19 of the stator 16 are concentrated windings. Other winding methods such as winding may be used.

  On the other hand, although 1st Embodiment is an example comprised so that the rotary machine 10 of the auxiliary machinery drive apparatus 1 might be provided with three sets of rotary machine structures, the rotary machine of this invention is not restricted to this, and 4 rotary machines are provided. You may comprise so that a rotating machine structure more than a set may be provided. Hereinafter, a formula for calculating the back electromotive force in a rotating machine (not shown) having a rotating machine structure of m (m is an integer of 3 or more) sets will be described.

  In this rotating machine, during the operation, in the m sets of rotating machine structures, the phase difference of the electrical angle between the magnetic pole generated in the armature and the magnetic pole of the permanent magnet has an electrical angle of 2π with respect to the arrangement direction of the armature. And the phase difference of the electrical angle between the magnetic pole generated in the armature and the soft magnetic core is shifted by the electrical angle π / m with respect to the arrangement direction of the armature. Thus, the power supplied to the armature is controlled. In addition, m sets of permanent magnet arrays are provided on one first rotor, and m sets of soft magnetic core arrays are provided on one second rotor (none of which are shown). . Furthermore, in the following description, the electrical angles corresponding to the rotation angles of the first and second rotors with respect to the reference position will be referred to as first and second rotor electrical angles θ1 and θ2, respectively, for convenience, and these electrical angles θ1, The time differential values of θ2 are denoted as ω1 and ω2, respectively.

ここで、ψｆは、軟磁性体コアを介してＵ相のコイルを通過する永久磁石の磁束の最大値である。 In the case of this rotating machine, the calculation formula of the magnetic flux Ψuγ appearing in the U phase of the γ (1 ≦ γ ≦ m) -th rotating machine structure among the m sets of rotating machine structures is as shown in the following formula (47). .

Here, ψf is the maximum value of the magnetic flux of the permanent magnet that passes through the U-phase coil via the soft magnetic core.

When γ in the above equation (47) is replaced from the value 1 to the value m, the following equations (48) to (50) are obtained.

Next, applying the trigonometric product-sum formula cos α cos β = (1/2) {cos (α + β) + cos (α−β)} to the above equations (48) to (50), the following equations (51) to (53 ) Is obtained.

Since the magnetic flux Ψu appearing in the entire U phase of the rotating machine is the sum of m Ψu1 to Ψum, the following expression (54) is obtained.

Here, paying attention to the arithmetic expression in curly brackets {} in the second term on the right side of the above expression (54), this arithmetic expression can be rewritten as the following expression (55).

Next, by transforming the first term on the right side of the above equation (55) using the series summation formula and Euler's formula, the following equation (56) is derived.

Further, by transforming the second term on the right side of the above equation (55) using the summation formula of the series and Euler's formula, the following equation (57) is obtained.

From the above equations (56) and (57), the following equation (58) is obtained.

Therefore, when the above equation (58) is applied to the above equation (54), the following equation (59) is finally derived.

Furthermore, when the calculation formulas of the magnetic fluxes Ψv and Ψw appearing in the entire V and W phases of the rotating machine are derived by the same method as described above, the following expressions (60) and (61) are obtained.

Then, when the left side and the right side of the above formulas (59) to (61) are time-differentiated, the following formulas (62) to (64) are obtained as formulas for calculating the back electromotive force.

Here, in the case of a rotating machine having m sets of rotating machine structures, assuming that the total magnetic flux amount of the entire motor is Ψ, Ψf = Ψ / m is established, and this is expressed by the above equations (62) to (64). When applied, the following expressions (65) to (67) are obtained.

  These formulas (65) to (67) are the same as the formulas (44) to (46) for calculating the counter electromotive voltage in the rotating machine 10 described above (that is, the formula for calculating the counter electromotive voltage of the rotating machine 40 described above). (28) to (30) are the same). Accordingly, even in a rotating machine having m sets of rotating machine structures, the above-described rotating machine 10 is controlled by controlling the electrical angle θz of m rotating magnetic field vectors so that θz = (2θ2−θ1) holds. Can be operated in the same way. Thereby, also in the auxiliary machine drive device provided with the rotary machine which has m sets of rotary machine structures, the same effect as the auxiliary machine drive device 1 of 1st Embodiment can be acquired. In particular, in this case, the larger the value of m, the more the torque ripple and cogging torque can be reduced.

  On the other hand, although 1st Embodiment is an example which used ECU2 and PDU30 as a control apparatus which controls the driving | operation of the rotary machine 10, the control apparatus which controls the rotary machine 10 is not restricted to this, Operation of the rotary machine 10 is carried out. Any device can be used as long as it can be controlled. For example, an electric circuit equipped with a microcomputer may be used as a control device for controlling the rotating machine 10.

  Next, an auxiliary machine drive device 1A according to the second embodiment will be described with reference to FIG. As shown in the figure, this auxiliary machine drive device 1A is different from the auxiliary machine drive device 1 of the first embodiment in that a rotary machine 10A is provided instead of the rotary machine 10 and the drive pulley 7 is replaced. However, the configuration is the same as that of the accessory drive device 1, and the following description will focus on the rotating machine 10A and the drive pulley 7A. In the following description, the same reference numerals are given to the same components as those of the auxiliary machine driving device 1 of the first embodiment, and the description thereof is omitted.

  In the rotating machine 10A of the auxiliary machine drive device 1A, the stator 16, the second rotor 15 and the first rotor 14 are arranged in order from the inside in the radial direction, and the stator 16 is connected to the engine 3 via the fixed portion 16b. It is fixed to the main body.

  The drive pulley 7A is fixed to the outer peripheral surface of the first rotor 14, and the belt 6 described above is wound between the drive pulley 7A and the driven pulley 5. The end portion of the first rotor 14 on the engine 3 side is a hollow cylindrical portion 14d, and this cylindrical portion 14d is rotatably fitted to the input shaft 12 on its inner peripheral surface. The bearing 14e is rotatably supported. With the above configuration, the drive pulley 7 </ b> A can rotate integrally with the first rotor 14.

  In this rotating machine 10 </ b> A, the positions of the permanent magnet 14 a of the first rotor 14, the first to third cores 15 a to 15 c of the second rotor 15, and the first to third armatures 17 to 19 of the stator 16. The relationship is the same as that of the rotating machine 10 described above, so that the rotating machine 10A can also be operated so as to exhibit the same operating characteristics as the planetary gear device, similar to the rotating machine 10 described above. Yes.

  According to the auxiliary machine drive device 1A of the second embodiment configured as described above, as with the auxiliary machine drive device 1 of the first embodiment, the cogging torque and the torque ripple can be greatly reduced compared to the conventional one, Productivity can be improved. In addition to this, in this auxiliary machine drive device 1A, the drive pulley 7A and the rotating machine 10A are integrated, and the drive pulley 7A is disposed outside the first rotor 14 in the radial direction. Compared with the accessory drive device 1 of the first embodiment in which the machine 10 is arranged side by side in the axial direction, the size in the axial direction can be reduced.

  In the auxiliary machine drive device 1A of the second embodiment, a one-way clutch 50 may be provided as shown in FIG. The one-way clutch 50 is connected to the first rotor 14 and the fixed portion 16b, and only when the first rotor 14 rotates in the same direction as the rotation direction of the crankshaft during engine operation by the one-way clutch 50. , Its rotation is allowed.

  When comprised as mentioned above, the same effect as the auxiliary machine drive device 1A of 2nd Embodiment can be acquired. In addition, as shown in FIG. 20, when the rotating magnetic field of the stator 16 is generated so as to rotate in the same direction as the rotating direction of the crankshaft during engine operation, the operating characteristics of the rotating machine 10A described above are obtained. As a result, the second rotor 15 rotates in the same direction as the rotating magnetic field, and accordingly, the crankshaft rotates integrally with the second rotor 15. Thus, the engine 3 can be started by being able to drive the crankshaft.

  Next, an auxiliary machine drive device 1B according to a third embodiment of the present invention will be described with reference to FIG. As shown in the figure, the accessory drive device 1B is connected to the input / output shafts 12 and 13 and the two rotors 14 and 15 in the rotating machine 10 as compared with the accessory drive device 1 of the first embodiment. Since the relationship is different, and other than that, it is configured in the same manner as the auxiliary machine drive device 1 of the first embodiment. Therefore, the following description will focus on differences from the auxiliary machine drive device 1 of the first embodiment, The same components are denoted by the same reference numerals, and the description thereof is omitted.

  In this auxiliary machine drive device 1B, the first rotor 14 of the rotating machine 10 is directly connected to the crankshaft of the engine 3 via the input shaft 12, and the second rotor 15 is connected to the drive pulley 7 via the output shaft 13. Has been. As described above, the rotating machine 10 can be operated so as to exhibit the same operation characteristics as the planetary gear device. In the present embodiment, the first rotor 14 is the input shaft 12 and the second rotor 15 is the second rotor 15. Since the output shaft 13 is fixed, the rotating machine 10 can be operated so that the relationship of VP = (VC + VS) / 2 is established among the three rotational speeds VP, VC, VS. Become. Therefore, the operation of the accessory drive device 1B of the present embodiment is as shown in FIG.

  First, when the engine is stopped and VC = 0, as shown in FIG. 22A, the pulley rotation speed VP is controlled to a predetermined value VREF by controlling the magnetic field rotation speed VS of the rotating machine 10. Can do. Also, when the engine is operating, as shown in FIGS. 22B and 22C, the pulley rotational speed VP is set to a predetermined value by controlling the magnetic field rotational speed VS as shown in FIGS. It can be controlled to VREF. That is, regardless of the engine speed, the pulley rotational speed VP can be controlled to a predetermined value VREF that is optimal for driving the accessory 4.

  Further, as indicated by a broken line in FIG. 22D, when the crankshaft rotational speed VC is very high, the pulley rotational speed VP is set to the predetermined value VREF even if the magnetic field rotational speed VS is controlled by supplying power to the stator 16. There are times when it cannot be raised. In such a case, the pulley rotation speed VP is increased to a predetermined value VREF as shown by a solid line in FIG. 22D by controlling the magnetic field rotation speed VS while executing power regeneration control in the stator 16. Can be made.

  According to the auxiliary machine drive device 1B of the third embodiment configured as described above, the cogging torque and the torque ripple can be significantly reduced as compared with the conventional one, similarly to the auxiliary machine drive device 1 of the first embodiment. Productivity can be improved.

  In the rotating machine 10 of the accessory driving device 1B of the third embodiment, the first rotor 14 is placed outside the second rotor 15 and the stator 16 is placed inside the second rotor 15 as in the rotating machine 10A described above. Each of the drive pulleys 7 </ b> A described above may be arranged on the outer side in the radial direction of the first rotor 14 so as to rotate integrally therewith. In such a configuration, the size in the axial direction can be reduced.

  Next, with reference to FIG. 23, an accessory driving apparatus 1C according to a fourth embodiment of the present invention will be described. As shown in the figure, this auxiliary machine drive device 1C is different from the auxiliary machine drive device 1 of the first embodiment in that a rotary machine 60 is provided in place of the rotary machine 10, and other than that. Is configured in the same manner as the auxiliary machine drive device 1 of the first embodiment. Therefore, hereinafter, the explanation will be made focusing on the rotating machine 60, and the same components as those of the auxiliary machine driving device 1 of the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted.

  First, FIG. 24 is an exploded perspective view in which a part of the rotating machine 60 is broken, and FIG. 25 is a schematic diagram showing the arrangement of the rotating machine structure when the rotating machine 60 is seen through from the radially outer side to the center. It is shown in a plan and plane. In the following description of FIG. 25, for the sake of convenience, the downward electrical angle in the figure is expressed as a positive value, and the upward electrical angle is expressed as a negative value, and the same is also described in the description of FIGS. .

  The rotating machine 60 includes a first rotor 70, a second rotor 80, and a stator 90 in order from the inside in the radial direction. The first rotor 70, the second rotor 80, and the stator 90 are all cylindrical and are disposed concentrically with each other and housed in a case (not shown).

  The first rotor 70 includes a base 71 and 2f (f is a natural number) permanent magnets 72 fixed to the outer peripheral surface of the base 71. The base 71 is a laminate of steel plates, and is fixed concentrically to the output shaft 13. The output shaft 13 is supported by a bearing (not shown) so as to be rotatable about the rotation axis of the rotating machine 60, and the first rotor 70 is also configured to be rotatable about the rotating axis of the rotating machine 60. .

  In addition, the 2f permanent magnets 72 (magnetic poles) are arranged at equal intervals in the circumferential direction of the outer peripheral surface of the base 71, so that the positions of both permanent magnets 72 are shifted in the rotational direction. The skew is arranged (see FIG. 25). Further, the surface of each permanent magnet 72 is covered with a steel plate 73.

  On the other hand, the second rotor 80 is fixed concentrically to the input shaft 12, and is configured such that an inner peripheral surface thereof has a predetermined gap with the outer peripheral surface of the first rotor 70. The input shaft 12 is supported by a bearing (not shown) so as to be rotatable about the rotation axis of the rotating machine 60, and the second rotor 80 is also configured to be rotatable about the rotating axis of the rotating machine 60. Further, the second rotor 80 is formed by integrally fixing the same number (that is, 2f) of soft magnetic cores 81 as the permanent magnets 72 with a holding member 82 of a non-magnetic material (stainless steel, synthetic resin, etc.). The soft magnetic cores 81 (soft magnetic bodies) extend in a predetermined length in the axial direction, and are arranged in parallel with each other at equal intervals in the circumferential direction of the second rotor 80.

  The stator 90 generates a rotating magnetic field and has 3f armatures 91. These armatures 91 are composed of 3f iron cores 92 projecting inward from a cylindrical base, coils 93 wound around these iron cores 92, and the like. A set of three-phase coils is formed. The 3f iron cores 92 are arranged at equal intervals in the circumferential direction of the inner peripheral surface of the stator 90, and the end portions of each iron core 92 are shifted in the opposite direction to the end portions of the permanent magnet 72. The skews are arranged so that the positional relationship is satisfied.

  Further, the armature 91 is connected to the ECU 2 and the battery 31 via the PDU 30. During the power regeneration control or the power running control, the ECU 2 causes the same number of magnetic poles as the magnetic poles of the permanent magnet 72 (that is, 2f) to be iron. The power input / output state is controlled so as to occur at the tip of the core 92. Hereinafter, the magnetic pole generated at the tip of the iron core 92 is referred to as “armature magnetic pole”. Along with the generation of the armature magnetic pole, a rotating magnetic field is generated so as to rotate along the stator 90, and a magnetic circuit (not shown) is interposed between the armature magnetic pole, the soft magnetic core 81, and the permanent magnet 72. It is formed.

  In the rotating machine 60 described above, during the generation of the rotating magnetic field, the electrical angle between both ends of the armature magnetic pole (that is, the electrical angle between both ends of the iron core 92) is θs, and the electrical angle between both ends of the permanent magnet 72 is set. Is θa and the electrical angle between both ends of the soft magnetic core 81 is θb, θs = 2θb−θa is established, and one of the two electrical angles θs and θa is an electrical angle with respect to the electrical angle θb. The other of the two electrical angles θs and θa is configured to be smaller by the electrical angle π than the electrical angle θb. Here, in the case of FIG. 25, since θb = 0 and θa = π, θs = −π.

  In the rotating machine 10X of FIG. 17 described above, the first to third cores 15a to 15c in the three sets of rotating machine structures are arranged on the same straight line extending in the left-right direction, and three permanent magnets 14c ′, 14c ′, The electrical angle phase difference between the magnetic pole 14c 'and the first to third cores 15a to 15c is arranged to increase by an electrical angle of π / 3, whereby the rightmost rotating machine in FIG. In the structure, the phase difference of the electrical angle between the magnetic pole of the permanent magnet 14c ′ and the core 15c is 2π / 3. Therefore, when considering a rotating machine having the m sets of rotating machine structures described above, the maximum phase difference (hereinafter referred to as the “maximum phase difference”) in the phase difference of the electrical angle between the magnetic pole of the permanent magnet and the soft magnetic core. “)” Is (m−1) π / m. Since the maximum phase difference (m−1) π / m is closer to the value π as the value of m is larger, if m → ∞, the maximum phase difference (m−1) π / m = π It can be approximated.

  When the rotating machine structure in which the maximum phase difference = π is established as described above is a virtual rotating machine structure, for example, when one virtual rotating machine structure is added to the rotating machine 10X of FIG. 17, the rotation shown in FIG. It becomes like machine 10X '. In this rotating machine 10X ′, a line segment connecting the centers of the four permanent magnets, a line segment connecting the centers of the four soft magnetic cores, and a line segment connecting the centers of the four armature magnetic poles. When these three line segments are aligned in the left-right direction, the positional relationship of the three is equal to the positional relationship of the permanent magnet 72, the soft magnetic core 81, and the armature magnetic pole in FIG. Become.

  That is, the arrangement of the permanent magnet 72, the soft magnetic core 81, and the armature magnetic poles in the rotating machine 60 shown in FIG. 25 is equivalent to the configuration in which m → ∞ in a rotating machine having m sets of rotating machine structures. Therefore, it can be seen that this rotating machine 60 also operates in the same manner as a rotating machine having m sets of rotating machine structures. As described above, during generation of the rotating magnetic field in the stator 90, θs = 2θb−θa is established at three electrical angles θs, θa, and θb, and one of the two electrical angles θs and θa is an electrical angle. The permanent magnet 72, the soft magnetic core 81, and the soft magnet core 81, so that the relationship that the other of the two electrical angles θs and θa is smaller than the electrical angle θb by the electrical angle π is established. By disposing the armature 91, it is possible to ensure the same operation state as that of a rotating machine having m sets of rotating machine structures.

  In addition to this, according to the rotating machine 60, since the rotating machine having the m sets of rotating machine structures described above corresponds to the setting of m → ∞, the rotating machines 10, 10A, 10X, The torque ripple and cogging torque can be further reduced as compared with a rotating machine having m sets of rotating machine structures. Furthermore, since the occurrence of a magnetic short circuit between the rotating machine structures in the axial direction can be avoided, the size of the rotating machine 60 in the axial direction can be reduced. As described above, the merchantability of the accessory drive device 1C can be improved.

  The auxiliary machine drive device 1C of the fourth embodiment is an example in which the structure of the rotating machine in the rotating machine 60 is configured as shown in FIG. 25, but the rotating machine structure of the rotating machine in the auxiliary machine driving apparatus of the present invention is as follows. However, the present invention is not limited to this, and any configuration that satisfies the above-described θs = (2θb−θa) may be used. For example, the rotating machine structure of the rotating machine may be configured as a rotating machine 60A shown in FIG. 27 or a rotating machine 60B shown in FIG. Also in these cases, one of the two electrical angles θs and θa is larger than the electrical angle θb by an electrical angle π, and the other of the two electrical angles θs and θa is smaller than the electrical angle θb by an electrical angle π. The armatures of the permanent magnet 72, the soft magnetic core 81, and the stator 90 may be arranged so as to be. 27 and 28, the same reference numerals are used for the same configuration as the rotating machine 60 for convenience.

  In the case of the rotating machine 60A shown in FIG. 27, since the 3f armatures of the stator 90 are arranged so as to extend in parallel to each other and in the axial direction, the coil space factor can be increased compared to the rotating machine 60. In addition, although the work of winding the coil around the iron core is facilitated, the torsion degree of the permanent magnet is larger than that of the rotating machine 60, so that the manufacture is difficult and the manufacturing cost is increased accordingly.

  On the other hand, in the case of the rotating machine 60B shown in FIG. 28, the 2f permanent magnets of the first rotor 70 are arranged in parallel to each other and extend in the axial direction. Manufacture is easy and the manufacturing cost can be reduced correspondingly. However, since the twisting degree of the iron core is larger than that of the rotating machine 60, the manufacturing is difficult, and the manufacturing cost is increased accordingly.

  The rotating machine structure shown in FIGS. 25, 27, and 28 is an example in which any one of a permanent magnet, an armature, and a soft magnetic core is disposed so as to extend in the axial direction. The arrangement of the child and the soft magnetic core is not limited to this, and θs = (2θb−θa) described above is established, and one of the two electrical angles θs and θa is larger than the electrical angle θb by the electrical angle π, It is only necessary that the other of the two electrical angles θs and θa be smaller than the electrical angle θb by the electrical angle π. For example, the permanent magnet, the armature, and the soft magnetic core may all be skewed, the armature is disposed so as to extend in the axial direction, and the magnetic pole generated in the armature is inclined with respect to the rotation direction ( That is, it may be configured to occur in a skew state.

  Next, an auxiliary machine drive device 1D according to the fifth embodiment will be described with reference to FIG. As shown in the figure, this auxiliary machine drive device 1D is different from the auxiliary machine drive device 1C of the fourth embodiment in that a rotary machine 60C is provided instead of the rotary machine 60, and the drive pulley 7 is replaced. Since the driving pulley 7A is different from the above-described configuration, and the other configuration is the same as that of the auxiliary machine driving device 1C, the following description will focus on the rotating machine 60C and the driving pulley 7A. In the following description, the same reference numerals are given to the same components as those of the auxiliary machine drive device 1C of the fourth embodiment, and the description thereof is omitted.

  In the rotating machine 60C of the accessory driving device 1D, the stator 90, the second rotor 80, and the first rotor 70 are arranged in order from the inside in the radial direction. The stator 90 is connected to the engine 3 via the fixed portion 90a. It is fixed to the main body.

  The drive pulley 7A is fixed to the outer peripheral surface of the first rotor 70, and the belt 6 described above is wound between the drive pulley 7A and the driven pulley 5. The end of the first rotor 70 on the engine 3 side is a hollow cylindrical portion 70a, and this cylindrical portion 70a is rotatably fitted to the input shaft 12 on its inner peripheral surface. The bearing 70b is rotatably supported. With the above configuration, the drive pulley 7 </ b> A can rotate integrally with the first rotor 70.

  In the rotating machine 60C, the positional relationship among the permanent magnet 72 of the first rotor 70, the soft magnetic core 81 of the second rotor 80, and the armature 91 of the stator 90 is the same as that of the rotating machine 60 described above. Thus, the rotating machine 60C can also be operated so as to exhibit the same operating characteristics as the planetary gear device, similarly to the rotating machine 60 described above.

  According to the auxiliary machine drive device 1D of the fifth embodiment configured as described above, the cogging torque and the torque ripple can be greatly reduced as compared with the conventional one, similarly to the auxiliary machine drive device 1C of the fourth embodiment. Productivity can be improved. In addition to this, in this auxiliary machine drive device 1D, the drive pulley 7A and the rotating machine 60C are integrated, and the drive pulley 7A is disposed on the outer side in the radial direction of the first rotor 70. The size in the axial direction can be reduced as compared with the accessory driving device 1C of the fourth embodiment in which the machine 60 is arranged side by side in the axial direction.

  In the accessory drive device 1D of the fifth embodiment, a one-way clutch connected to the first rotor 70 and the fixed portion 90a may be provided in the same manner as in FIG. When comprised in this way, the engine 3 can be started by being able to drive a crankshaft.

  Next, an accessory drive apparatus 1E according to a sixth embodiment of the present invention will be described with reference to FIG. As shown in the figure, this auxiliary machine drive device 1E is connected to the input / output shafts 12 and 13 and the two rotors 70 and 80 in the rotating machine 60 as compared with the auxiliary machine drive device 1C of the fourth embodiment. Since the relationship is different and the other configuration is the same as that of the accessory drive device 1C of the fourth embodiment, the following description will focus on differences from the accessory drive device 1C of the fourth embodiment. The same components are denoted by the same reference numerals, and the description thereof is omitted.

  In this auxiliary machine drive apparatus 1E, the first rotor 70 of the rotating machine 60 is directly connected to the crankshaft of the engine 3 via the input shaft 12, and the second rotor 80 is connected to the drive pulley 7 via the output shaft 13. Has been. Furthermore, as described above, the rotating machine 60 is configured to be operable so as to exhibit the same operating characteristics as the planetary gear device.

  According to the auxiliary machine drive device 1E of the sixth embodiment configured as described above, the cogging torque and the torque ripple can be greatly reduced as compared with the conventional one, similarly to the auxiliary machine drive device 1C of the fourth embodiment. Productivity can be improved.

  In the rotating machine 60 of the accessory driving apparatus 1E according to the sixth embodiment, the first rotor 70 is placed on the outer side in the radial direction of the second rotor 80 and the stator 90 is placed on the second rotor 80, as in the rotating machine 60C described above. The drive pulley 7A described above may be disposed outside the first rotor 70 in the radial direction so as to rotate integrally therewith. In such a configuration, the size in the axial direction can be reduced.

It is a figure showing a schematic structure of an auxiliary machinery drive concerning a 1st embodiment of the present invention. It is sectional drawing which shows typically the schematic structure of the rotary machine of an auxiliary machinery drive device. (A) A part of a cross section broken along the circumferential direction is schematically shown at the position of the AA line in FIG. 2, (b) the position of the BB line, and (c) the position of the CC line. FIG. It is sectional drawing which shows schematic structure of the rotary machine in the auxiliary machinery drive device of patent document 1. FIG. It is the figure which developed typically a part of section which fractured along the peripheral direction in the position of the DD line of Drawing 4. It is a figure which shows the structure equivalent to the structure of FIG. It is a figure which shows the equivalent circuit equivalent to the rotary machine structure which consists of a 1st permanent magnet, a 1st soft-magnetic-material core, and a stator of the rotary machine of FIG. It is a figure which shows the equivalent circuit equivalent to the rotary machine structure which consists of a 2nd permanent magnet, a 2nd soft-magnetic-material core, and a stator of the rotary machine of FIG. FIG. 4 is a diagram showing a configuration functionally equivalent to the configuration of FIG. 3. FIG. 10 is a diagram in which the magnetic poles of the rotating magnetic field in the first to third armatures of FIG. 9 are replaced with virtual permanent magnet magnetic poles in order to explain the operation of the rotating machine of FIG. 2. It is a figure which shows the equivalent circuit equivalent to the 1st rotary machine structure of the rotary machine of FIG. It is a figure which shows the equivalent circuit equivalent to the 2nd rotary machine structure of the rotary machine of FIG. It is a figure which shows the equivalent circuit equivalent to the 3rd rotary machine structure of the rotary machine of FIG. It is a figure which shows an example of the generation state of the cogging torque in the rotary machine of FIG. It is a figure which shows an example of the generation | occurrence | production state of the cogging torque in the rotary machine of FIG. It is a velocity diagram for demonstrating operation | movement of the auxiliary machinery drive apparatus of 1st Embodiment, Comprising: (a) An example in engine stop, (b) An example in engine low speed driving | operation, (c) Engine high speed driving | operation It is a figure which shows an example in the inside, (d) an example under engine ultra-low-speed driving | operation, respectively. It is a figure which shows the modification of arrangement | positioning of the 1st-3rd rotary machine structure in the rotary machine of an auxiliary machinery drive device. It is a figure which shows schematic structure of the auxiliary machinery drive device which concerns on 2nd Embodiment. It is a figure which shows the modification of the auxiliary machinery drive device of 2nd Embodiment. FIG. 20 is a velocity diagram for explaining the operation of the accessory drive device of FIG. 19. It is a figure which shows schematic structure of the auxiliary machinery drive device which concerns on 3rd Embodiment. It is a velocity diagram for demonstrating operation | movement of the auxiliary machinery drive apparatus of 3rd Embodiment, Comprising: (a) An example in engine stop, (b) An example in engine low speed driving | operation, (c) Engine high speed driving | operation It is a figure which shows an example in the inside, (d) an example under engine ultra-low-speed driving | operation, respectively. It is a figure which shows schematic structure of the auxiliary machinery drive device which concerns on 4th Embodiment. It is the disassembled perspective view which fractured | ruptured a part of rotary machine in the auxiliary machinery drive device of 4th Embodiment. It is a figure which shows typically the structure of the rotary machine structure in the rotary machine of FIG. It is a figure which shows the example at the time of adding one virtual rotating machine structure in the rotating machine of FIG. It is a figure which shows typically the modification of a structure of the rotary machine structure in the rotary machine of the auxiliary machinery drive apparatus of 4th Embodiment. It is a figure which shows typically the other modification of the structure of the rotary machine structure in the rotary machine of the auxiliary machinery drive device of 4th Embodiment. It is a figure which shows schematic structure of the auxiliary machinery drive device which concerns on 5th Embodiment. It is a figure which shows schematic structure of the auxiliary machinery drive device which concerns on 6th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Auxiliary machine drive apparatus 1A-1E Auxiliary machine drive apparatus 2 ECU (control apparatus)
3 Engine (motor)
4 Auxiliary machine 10 Rotating machine 10A Rotating machine 10X Rotating machine 14 First rotor 14c Permanent magnet (magnetic pole)
15 Second rotor 15a First soft magnetic core (soft magnetic body)
15b Second soft magnetic core (soft magnetic body)
15c Third soft magnetic core (soft magnetic body)
16 Stator 17 First Armature 18 Second Armature 19 Third Armature 30 PDU (Control Device)
60 Rotating machine 60A Rotating machine 60B Rotating machine 60C Rotating machine 70 First rotor 72 Permanent magnet (magnetic pole)
80 Second rotor 81 Soft magnetic core (soft magnetic body)
90 Stator 91 Armature θa Electrical angle between both ends of permanent magnet (magnetic pole) θb Electrical angle between both ends of soft magnetic core (soft magnetic body) θs Electrical angle between both ends of magnetic pole generated in armature

Claims (2)

An auxiliary machine drive device connected to a prime mover and driving an auxiliary machine,
A stator for generating a rotating magnetic field, and a first rotor and a second rotor that are rotatable relative to the stator, and one of the first rotor and the second rotor is mechanically connected to the prime mover. The other of the first rotor and the second rotor is mechanically connected to the auxiliary machine, and the rotating magnetic field is generated between the stator, the first rotor, and the second rotor. A rotating machine that inputs and outputs energy via a magnetic circuit formed along with
A control device for controlling an input / output state of electric power in the stator;
With
The stator has a plurality of armatures arranged along a virtual cylindrical surface, and generates the rotating magnetic field by magnetic poles generated in the plurality of armatures with the input and output of the energy,
The first rotor has a plurality of magnetic poles arranged along the virtual cylindrical surface with a space between each other, and the plurality of magnetic poles have two adjacent polarities different from each other, and the plurality of magnetic poles Arranged so that there is a gap between the armature,
The second rotor has a plurality of soft magnetic bodies arranged between the plurality of armatures and the plurality of magnetic poles while being arranged along the virtual cylindrical surface with a space between each other,
Each of the plurality of armatures extends in a first predetermined direction along the virtual cylindrical surface,
Each of the plurality of magnetic poles extends in a second predetermined direction along the virtual cylindrical surface such that an electrical angle between both ends of each magnetic pole is θa,
Each of the plurality of soft magnetic bodies extends in a third predetermined direction along the virtual cylindrical surface such that an electrical angle between both ends of each soft magnetic body is θb,
During generation of the rotating magnetic field, θs = 2θb−θa is established, where θs is an electrical angle between both ends of the magnetic poles generated in the plurality of armatures. Auxiliary drive device. The three electrical angles θs, θa, and θb are such that one of the two electrical angles θs and θa is larger than the electrical angle θb by an electrical angle π, and the other of the two electrical angles θs and θa is the electrical angle. 2. The accessory driving apparatus according to claim 1, wherein the accessory driving apparatus is configured to be smaller by an electrical angle π than the angle θb .

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