JP5573769B2 - Rotating electrical machine apparatus, vehicle driving apparatus, rotating electrical machine control method, and vehicle driving apparatus control method - Google Patents

Description

  The present invention relates to a rotating electrical machine apparatus capable of transmitting torque between a first rotor and a second rotor.

  Conventionally, as a rotating electrical machine, an input shaft and an output shaft that are relatively rotatable and coaxially arranged, a first rotor connected to the input shaft, a first rotor connected to the output shaft, and a first A structure including a second rotor concentrically arranged on the outer circumference of the rotor and a stator arranged concentrically on the outer circumference of the second rotor is well known.

Patent Document 1 discloses a torque acting on the second rotor by reversing the electromagnetic torque generated in the first rotor and the electromagnetic torque generated in the second rotor by energizing the stator windings. A technique for amplifying the signal is disclosed.
Assume that the rotating electrical machine of Patent Document 1 is used for a drive device of a hybrid vehicle. That is, for example, the engine shaft is connected to the input shaft, and the transmission shaft is connected to the output shaft. According to this, the transmission shaft can be rotated by assisting the engine drive by the rotating electric machine.

JP 2010-93998 A

By the way, the rotating electrical machine used in the drive device of the hybrid vehicle is a mode in which the engine is started by the rotating electrical machine from the state where the engine is stopped (referred to as an engine restart mode). In particular, the engine is stopped and the vehicle is driven only by the rotating electrical machine. It is preferable to be able to realize a driving state that enables a mode for starting the engine from the EV traveling state.
When this engine restart mode is not provided, it is necessary to provide a separate motor for starting the engine, or an engagement means (clutch) capable of switching the engagement state between the engine, the rotating electrical machine, and the transmission is required. This is because the device and control become complicated.

  In the engine restart mode, it is necessary to start the engine by rotating the first rotor by rotating the second rotor from the state where the engine is stopped. That is, the driving state of the rotating electrical machine that enables the engine restart mode is a driving state in which the electromagnetic torque generated in the first rotor and the electromagnetic torque generated in the second rotor are in the same direction.

However, the rotating electrical machine disclosed in Patent Document 1 is only in a driving state in which the electromagnetic torque generated in the first rotor and the electromagnetic torque generated in the second rotor are opposite to each other. The engine restart mode cannot be realized.
Patent Document 1 does not describe any means for realizing a driving state in which the electromagnetic torque generated in the first rotor and the electromagnetic torque generated in the second rotor are in the same direction.

  The present invention has been made in view of such circumstances, and a rotating electrical machine apparatus capable of realizing a driving state in which the electromagnetic torque generated in the first rotor and the electromagnetic torque generated in the second rotor are in the same direction, And it aims at providing the drive device for vehicles which can realize engine restart mode using this rotating electrical machinery apparatus.

[Means of Claim 1]
The rotating electrical machine apparatus according to claim 1 includes a first rotor, a second rotor, and a stator that are coaxially arranged, and the second rotor is a first rotor in a radial direction or an axial direction. A rotating electrical machine arranged between the stator and a control device for controlling driving of the rotating electrical machine is provided.

The second rotor is wound on the side facing the first rotor and is composed of a multiphase coil, and is wound on the side facing the stator and is composed of a multiphase coil and a second winding that is, the number of pole pairs of the first rotor P _1, the pole pair of the stator and P _2, pole pair of the first winding is P _1, the pole of the second winding logarithm is a _{P 2.}

The first winding and the second winding are connected in series and in the order of normal phase or reverse phase.
The stator has a stator winding composed of multiphase coils.

The control device includes: a first rotor angle detection unit that detects a rotation angle of the first rotor; an inverter that supplies multiphase AC power to the stator winding; and a drive command value calculation that calculates a drive command value for the inverter. And a driving state selection unit that selects one of the first driving state and the second driving state as the driving state of the first rotor and the second rotor.
The first driving state is a driving state in which the torques of the first rotor and the second rotor are opposite to each other.
The second driving state is a driving state in which the torques of the first rotor and the second rotor are in the same direction.
In addition, the drive command value calculation means calculates current phase calculation means for calculating the phase command value of the current output from the inverter to the rotating electrical machine based on the drive state selected by the drive state selection means and the rotation angle of the first rotor. Have

According to this, it becomes possible to implement | achieve the 2nd drive state required for engine restart mode by changing the electric current phase of the energization current to a stator coil | winding.
Normally, since the direction of torque of the first rotor is determined by the current state of the second rotor, it was originally necessary to grasp the current state of the second rotor. Two types of driving states, the first driving state and the second driving state, can be realized only by changing the current phase of the stator winding without using a sensor for detecting the current state of the child.

[Means of claim 2]
According to the rotating electrical machine apparatus of the second aspect, the control device includes a first rotor speed calculation means for calculating the rotation speed of the first rotor based on the rotation angle of the first rotor, and the second rotor. A second rotor speed detecting means for detecting the rotation speed, and the drive command value calculating means has a voltage basic frequency calculating means for calculating a basic frequency fs of the voltage applied to the stator winding, and the voltage basic frequency The calculating means calculates the fundamental frequency fs based on the rotation speed of the first rotor and the rotation speed of the second rotor. According to this, since the fundamental frequency fs can be easily calculated from the rotational speeds of the first rotor and the second rotor, good controllability can be obtained.

[Means of claim 3]
A rotary electric machine according to claim 3, the pole pair number P ₁ is greater than the number of pole pairs P _2.
According to this, the range in which torque can be applied to the first rotor and the second rotor without supplying electric power from the outside extends to the high speed range.
For example, when the input shaft is connected to the first rotor, the output shaft is connected to the second rotor, and the torque of the first rotor is transmitted to the second rotor to amplify the torque of the second rotor. The range of torque amplification without external power supply extends to the high speed range.

[Means of claim 4]
In the rotating electrical machine apparatus according to the fourth aspect, the stator is disposed on the inner periphery of the second rotor, and the first rotor is disposed on the outer periphery of the second rotor.
According to this, since the opposing area of the first rotor and the second rotor is large, the capacity of torque that can be transmitted between the first rotor and the second rotor is increased.

[Means of claim 5]
According to a fifth aspect of the present invention, there is provided a vehicular drive apparatus. The rotating electrical machine apparatus according to any one of the first to fourth aspects, a storage battery that supplies power to the inverter, and a charge state detection that detects a charge state of the storage battery. Means, and either the first rotor or the second rotor is connected to the engine shaft, and the other of the first rotor or the second rotor is connected to the transmission shaft.
Then, the driving state selection unit selects one of the first driving state and the second driving state based on the charging state from the charging state detection unit.
That is, in this means, a vehicle drive device for a hybrid vehicle is configured by using the rotating electrical machine device according to claims 1 to 4.
Thereby, when the engine is stopped and the engine needs to be started, the rotor connected to the transmission shaft is changed from the state where the rotor connected to the engine shaft is stopped by setting the rotating electric machine to the second drive state. It can be rotated to drive the engine. That is, the engine restart mode can be realized only by changing the driving state of the rotating electrical machine.
This eliminates the need for a separate starting motor.

[Means of claim 6]
The vehicle drive device according to claim 6 includes acceleration request degree calculation means for calculating an acceleration request degree, wherein the drive state selection means includes a first condition that the state of charge of the storage battery is equal to or higher than a predetermined level, and an acceleration request. The second drive state is selected when at least one of the second conditions that the degree is less than the predetermined level is not satisfied and when the engine is stopped.
According to this, the first and second drive states can be selected by reflecting the magnitude of the acceleration request degree.

[Means of Claim 7]
This means relates to a method for controlling a rotating electrical machine having the following configuration.
The rotating electrical machine includes a first rotor, a second rotor, and a stator that are coaxially arranged, and the second rotor is disposed between the first rotor and the stator in a radial direction or an axial direction. A first winding wound on the side facing the first rotor and configured with a multiphase coil, and wound on the side facing the stator and configured with a multiphase coil If the number of pole pairs of the first rotor is P ₁ and the number of pole pairs of the stator is P ₂ , the number of pole pairs of the first winding is P ₁ , and the number of pole pairs of the second winding is a P _2, a first winding and the second winding, in series, and is connected to the positive phase sequence or reverse phase order with each other. The stator has a stator winding composed of multiphase coils.

This control method includes a driving state selection step of selecting one of a first driving state and a second driving state as driving states of the first rotor and the second rotor, and multiphase AC power in the stator winding. A drive command value calculating step for calculating a drive command value for an inverter that supplies the drive command value.
In the drive command value calculation step, the phase command value of the current output from the inverter to the rotating electrical machine is calculated based on the drive state selected in the drive state selection step and the rotation angle of the first rotor.
According to this, there exists an effect similar to Claim 1.

[Means of Claim 8]
According to the control method for a rotating electrical machine according to claim 8, in the drive command value calculation step, the voltage applied to the stator winding based on the rotation speed of the first rotor and the rotation speed of the second rotor. The fundamental frequency fs is calculated.
According to this, there exists an effect similar to Claim 2.

[Means of Claim 9]
This means relates to a control method for a vehicle drive device having the following configuration.
The vehicle drive device includes a first rotor, a second rotor, and a stator arranged on the same axis, and the second rotor is located between the first rotor and the stator in a radial direction or an axial direction. A first winding wound on the side facing the first rotor and composed of a multiphase coil, and wound on the side facing the stator and composed of a multiphase coil and a second winding that is, the number of pole pairs of the first rotor P _1, the pole pair of the stator and P _2, pole pair of the first winding is P _1, the pole of the second winding logarithm is P _2, a first winding and the second winding, in series, and is connected to the positive phase sequence or reverse phase order with each other, the stator has a stator winding composed of a polyphase coil A rotating electric machine.
In addition, an inverter for supplying multiphase AC power to the stator windings and a storage battery for supplying power to the inverter are provided.
One of the first rotor and the second rotor is connected to the engine shaft, and the other of the first rotor and the second rotor is connected to the transmission shaft.

The control method of this means is the first driving state in which the torques of the first rotor and the second rotor are opposite to each other as the driving states of the first rotor and the second rotor based on the state of charge of the storage battery. And a drive state selection step for selecting one of the second drive states in which the torques of the first rotor and the second rotor are in the same direction, and a drive command value calculation for calculating a drive command value for the inverter Steps.
In the drive command value calculation step, the phase command value of the current output from the inverter to the rotating electrical machine is calculated based on the drive state selected in the drive state selection step and the rotation angle of the first rotor.

[Claim 10]
In the control method for a vehicle drive device according to claim 10, in the driving state selection step, a first condition that the state of charge of the storage battery is equal to or higher than a predetermined level and a second condition that the degree of acceleration request is lower than the predetermined level. The second drive state is selected when at least one of the following conditions is not satisfied and the engine is stopped.

1 is an overall configuration diagram of a rotating electrical machine (Example 1). FIG. (Example 1) which is a 1/4 model figure showing the principal part of a rotary electric machine. It is a schematic diagram explaining the whole structure of a rotary electric machine apparatus (Example 1). 1 is a block diagram illustrating a configuration of a control device for a rotating electrical machine (Example 1). FIG. (Example 1) which is a figure which shows the relationship between the electric current phase energized to a stator winding | coil and the electromagnetic torque of a 1st, 2nd rotor. (A) is explanatory drawing explaining the torque of each rotor in A state (1st drive state), (b) is explanatory drawing explaining the torque of each rotor in B state (2nd drive state). There is (Example 1). (Example 1) which is a magnetic flux distribution diagram using the magnetic force line of the rotary electric machine in A state. (Example 1) which is a magnetic flux distribution diagram using the magnetic force line of the rotary electric machine in B state. (Example 1) which is a magnetic flux distribution diagram using the magnetic force line of the rotary electric machine in C state (1st drive state). It is the table | surface which put together the drive state of the rotary electric machine (Example 1). Is a diagram showing the relationship between the rotational speed N ₂ of the fundamental frequency fs and the second rotor (Examples 1 and 2). 1 is an overall configuration diagram of a vehicle drive device (Example 1); FIG. It is a flowchart explaining the flow of the process which MG-ECU performs. (Example 3) which is a schematic diagram explaining the whole structure of a rotary electric machine apparatus. (Example 4) which is a schematic block diagram of the vehicle drive device. 10 is a table summarizing driving states of a rotating electrical machine (Example 4). (Example 5) which is a schematic block diagram of the vehicle drive device. It is a block diagram which shows the structure of the control apparatus of a rotary electric machine (modification).

  The mode for carrying out the present invention will be described in detail with reference to the following examples.

[Example 1]
[Configuration of Example 1]
A first embodiment will be described with reference to FIGS.
As shown in FIG. 12, the vehicle drive device 1 of the present embodiment includes a rotating electrical machine device 2 that can transmit power between an engine E and a transmission T of the vehicle.

First, the structure of the rotary electric machine apparatus 2 is demonstrated using FIGS.
The rotating electrical machine apparatus 2 is relatively rotatable and has an input shaft 3 and an output shaft 4 that are coaxially arranged, and a first rotor 7 that is coaxially arranged with respect to the input shaft 3 and the output shaft 4. , A rotating electrical machine 2A having a second rotor 8 and a stator 9, and a control device 2B for controlling driving of the rotating electrical machine 2A.
In the rotating electrical machine 2A of the present embodiment, a second rotor 8 is disposed on the outer periphery of the first rotor 7, a stator 9 is disposed on the outer periphery of the second rotor 8, and the first rotor 7 and the second rotor It is an inner rotor type having a radial air gap between the rotor 8 and between the second rotor 8 and the stator 9.

The first rotor 7 is a surface magnet type rotor.
That is, as shown in FIG. 2, on the outer peripheral surface of the cylindrical rotor core 10, the S-pole permanent magnets 11 on the outside and the N-pole permanent magnets 12 on the outside are alternately arranged in the circumferential direction. . And the 1st rotor 7 is connected with the input shaft 3 into which the motive power from the outside is input so that rotation is integral.
The first rotor 7 is not particularly limited as long as it is a type of rotor used for a synchronous motor, and may be, for example, an embedded magnet type. The rotor core 10 is formed, for example, by laminating a plurality of thin steel plates.

As shown in FIG. 2, the second rotor 8 is wound around a cylindrical rotor core 15 and an inner peripheral side of the rotor core 15, that is, a side facing the first rotor 7. The winding 16 has a second winding 17 wound on the outer peripheral side of the rotor core 15, that is, on the side facing the stator 9.
And the 2nd rotor 8 is connected with the output shaft 4 from which motive power is output outside so that rotation is possible integrally.

The rotor core 15 is formed, for example, by laminating a plurality of thin steel plates, and a slot 20 corresponding to the number of pole pairs P ₁ of the first rotor 7 is formed on the inner peripheral side thereof. Are formed with slots 21 corresponding to the number of pole pairs P ₂ of the stator 9. In the present embodiment, the number of pole pairs P ₁ of the first rotor 7 is 4, and the number of pole pairs P ₂ of the stator 9 is 8.
Therefore, as shown in FIG. 2, a total of 24 slots 20 are provided on the inner peripheral side of the rotor core 15, with one pole per one pole for each pole pair number of 4. In FIG. 2, only the quarter circle portion is shown. Further, on the outer peripheral side of the rotor core 15, a total of 48 slots 21, which is one slot per pole per phase, are provided for the number of pole pairs of 8.

The first winding 16 is configured by star connection of three-phase coils, and is inserted into 24 slots 20 provided on the inner peripheral side of the rotor core 15.
Similarly to the first winding 16, the second winding 17 is configured by star connection of three-phase coils, and is inserted into 48 slots 21 provided on the outer peripheral side of the rotor core 15.
The first winding 16 and the second winding 17 are connected to each other in series and in reverse phase. That is, as shown in FIG. 3, for example, when the rotation direction of the second rotor 8 is viewed as a reference, two of the three phases (the V phase and the W phase in FIG. 3) are replaced, and They are connected so as to be in a phase relationship.

The stator 9 includes, for example, a stator core 24 formed by laminating a plurality of thin steel plates, and a stator winding 25 wound around the stator core 24.
In the present embodiment, the number of pole pairs P ₂ of the stator 9 is 8, and the stator core 24 is formed with a total of 48 slots 26, one slot per pole per phase. Line 25 is inserted. The stator winding 25 is, for example, a star-connected three-phase coil, and each terminal of the three-phase coil is connected to the inverter 29.
The inverter 29 is a device that performs power conversion between the storage battery 30 that is a power supply source to the stator winding 25 and the stator winding 25.

  As shown in FIG. 4, the control device 2 </ b> B includes a first rotor angle detection unit 31 that detects the rotation angle of the first rotor 7, and the rotation of the first rotor 7 based on the rotation angle of the first rotor 7. The first rotor speed calculating means 32 for calculating the speed, the second rotor speed detecting means 33 for detecting the rotation speed of the second rotor 8, the inverter 29, and the drive command for calculating the drive command value for the inverter 29 Value calculation means 34 and drive state selection means 35 for selecting the drive states of the first rotor 7 and the second rotor 8 are provided.

The first rotor angle detection means 31 is a rotation angle sensor that detects the rotation angle of the first rotor 7.
The second rotor speed detection means 33 is, for example, a rotation angle sensor that detects the rotation angle of the second rotor 8, and a calculation unit that calculates the rotation speed of the second rotor 8 based on the output of the rotation angle sensor. It is made up of.

  The calculation unit of the first rotor speed calculation unit 32, the second rotor speed detection unit 33, the drive command value calculation unit 34, and the drive state selection unit 35 are, for example, an ECU (electronic control unit) connected to the rotating electrical machine 2A. Is provided inside. That is, the ECU connected to the rotating electrical machine 2 </ b> A functions as the first rotor speed calculation unit 32, the calculation unit of the second rotor speed detection unit 33, the drive command value calculation unit 34, and the drive state selection unit 35.

  The drive command value calculation means 34 includes a current phase calculation means 34a for calculating a phase command value of a current (inverter output current) output from the inverter 29 to the rotating electrical machine 2A, and a basic frequency (a frequency applied to the stator winding 25). (Hereinafter referred to as voltage basic frequency fs) and voltage basic frequency calculating means 34b for calculating the amplitude of the inverter output current.

Then, the current phase calculation unit 34a is configured to output the inverter output current based on the drive state selected by the drive state selection unit 35 and the rotation angle of the first rotor 7 output from the first rotor angle detection unit 31. The phase command value is calculated.
In addition, the voltage basic frequency calculation means 34 b includes the rotation speed of the first rotor 7 output from the first rotor speed calculation means 32 and the second rotor 8 output from the second rotor speed detection means 33. Based on the rotation speed, the voltage basic frequency fs is calculated.
Moreover, the current amplitude calculation means 34c calculates an amplitude according to the magnitude | size of the output torque requested | required, for example.
The drive state selection means 35, current phase calculation means 34a, and voltage basic frequency calculation means 34b will be described in more detail later.

Here, the transition of the driving state by the control of the current phase will be described.
FIG. 5 shows electromagnetic waves generated in the first rotor 7 when the phase of the current (inverter current) applied to the stator winding 25 is changed under the condition that the input shaft 3 is 0 rpm and the output shaft 4 is 1000 rpm. It is a figure which shows the change of torque Tq1 and the electromagnetic torque Tq2 which arises in the 2nd rotor 8. FIG. Note that the rotation direction (forward rotation direction) of the input shaft 3 and the output shaft 4 is counterclockwise, and the counterclockwise rotation is the positive side.
As shown in FIG. 5, it can be seen that the driving state of the rotating electrical machine 2 </ b> A becomes three states A to C by changing the current phase.

  The A state is a state where the torque Tq1 of the first rotor 7 is negative and the torque Tq2 of the second rotor 8 is positive. That is, as shown in FIG. 6A, the torque Tq1 of the first rotor 7 is generated clockwise, the torque Tq2 of the second rotor 8 is generated counterclockwise, and the torque Tq1 of the first rotor 7 This is a state in which the torque Tq2 of the second rotor 8 is opposite to each other.

  FIG. 7 shows the magnetic flux distribution of the rotating electrical machine 2A in the A state using magnetic lines of force. It can be seen from this magnetic flux distribution that the torque Tq1 of the first rotor 7 is generated clockwise and the torque Tq2 of the second rotor 8 is generated counterclockwise.

  The B state is a state where the torque Tq1 of the first rotor 7 and the torque Tq2 of the second rotor 8 are both positive. That is, as shown in FIG. 6B, both the torque Tq1 of the first rotor 7 and the torque Tq2 of the second rotor 8 are generated counterclockwise, and the torque Tq1 of the first rotor 7 and the second rotor 7 8 torques Tq2 are in the same direction.

  FIG. 8 shows the magnetic flux distribution of the rotating electrical machine 2A in the B state using magnetic lines of force. From this magnetic flux distribution, it can be seen that both the torque Tq1 of the first rotor 7 and the torque Tq2 of the second rotor 8 are generated counterclockwise.

  The C state is a state in which the torque Tq1 of the first rotor 7 is positive and the torque Tq2 of the second rotor 8 is negative. That is, the torque Tq1 of the first rotor 7 is generated counterclockwise, the torque Tq2 of the second rotor 8 is generated clockwise, and the torque Tq1 of the first rotor 7 and the torque Tq2 of the second rotor 8 are It is a state where they are opposite to each other.

  FIG. 9 shows the magnetic flux distribution of the rotating electrical machine 2A in the C state using magnetic field lines. It can be seen from this magnetic flux distribution that the torque Tq1 of the first rotor 7 is generated counterclockwise and the torque Tq2 of the second rotor 8 is generated clockwise.

  Here, the driving state in which the torque Tq1 of the first rotor 7 and the torque Tq2 of the second rotor 8 are opposite to each other is referred to as a first driving state, and the torque Tq1 of the first rotor 7 and the second rotor 8 are The driving state in which the torques Tq2 are in the same direction is referred to as a second driving state.

FIG. 10 shows the balance of torque in each state.
First, in the first driving state (A state, C state), the torque Tq1 of the first rotor 7 and the torque Tq2 of the second rotor 8 are opposite to each other and are connected to the input shaft 3. The sum of the torque Tq1 of the rotor 7 and the torque Tq3 of the stator 9 is balanced with the torque Tq2 of the second rotor 8 connected to the output shaft 4.
In the C state, torque acts on the opposite side to the A state.

  In the second drive state (B state), the torque Tq1 of the first rotor 7 and the torque Tq2 of the second rotor 8 are in the same direction and are connected to the input shaft 3. The sum of the torque Tq1 and the torque Tq2 of the second rotor 8 connected to the output shaft 4 is balanced with the torque Tq3 of the stator 9.

  The drive state selection means 35 selects the drive state of the rotating electrical machine 2A as one of the first drive state and the second drive state described above. That is, the drive state selection means 35 is a part that selects and commands whether the drive state of the first rotor 7 and the second rotor 8 is the first drive state or the second drive state.

Then, the current phase calculation means 34a outputs an inverter output in accordance with the drive state selected by the drive state selection means 35 and the output from the first rotor angle detection means 31 (rotation angle of the first rotor 7). Calculate the current phase command value.
For example, when the first drive state is selected by the drive state selection means 35, the current phase calculation means 34a calculates the phase command value of the inverter output current that will be in the first drive state, and this phase command value is the inverter 29. The output from the first rotor angle detection means 31 is used to grasp the position of the first rotor 7 when calculating the phase command value.

Next, control of the voltage basic frequency fs of the stator winding 25 will be described with reference to FIGS. 4 and 11.
The voltage basic frequency calculation means 34 b is a rotation speed of the first rotor 7 output from the first rotor speed calculation means 32 and a rotation speed of the second rotor 8 output from the second rotor speed detection means 33. Based on the above, the voltage fundamental frequency fs is calculated.
Hereinafter, a method for calculating the voltage basic frequency fs will be described in detail.

The voltage fundamental frequency fs is
fs = (P ₁ + P ₂ ) n ₂ −P ₁ n ₁ Formula (1)
It is controlled by the relational expression. Here, n ₁ is the rotation speed (r / sec) proportional to the rotation speed of the first rotor 7, and n ₂ is the rotation speed (r / sec) proportional to the rotation speed of the second rotor 8. sec).

This equation (1) can be derived as follows.
First, the frequency between the first rotor 7 and the second rotor 8, that is, the frequency f1 of the current generated in the first winding 16, is
_{f1 = P 1 n 1 -P 1} n 2 ··· formula (2)
It is represented by
Next, the frequency between the second rotor 8 and the stator 9, that is, the frequency f2 of the current generated in the second winding 17 is
f2 = fs−P ₂ n ₂ Formula (3)
It is represented by

Since the first winding 16 and the second winding 17 are connected in reverse phase order,
f1 = −f2 Formula (4)
Then,
_{P 1 n 1 -P 1 n 2} = - (fs-P 2 n 2) ··· formula (4a)
When fs is put together on the left side, Expression (1) is derived.

If n ₁ and n ₂ are converted into units of rotation (rpm) as N1 and N2, respectively, Equation (1) is
_{fs = (P 1 + P 2} ) (N 2/60) -P 1 (N 1/60) ··· formula (1a)
Is equivalent to

Here, when the rotational speed N ₁ of the first rotor 7 is 1000 rpm, P ₁ is 4, and P ₂ is 8, the formula (1a) is
fs = N ₂ /5-66.67 Formula (1b)
It becomes.
That is, as shown by the solid correlation line in FIG. 11, the voltage basic frequency fs is a linear function of the rotational speed N ₂ of the second rotor 8.

The rotation speed N0 at which fs = 0 is N0 = 333 rpm according to the equation (1b), and in the region where N ₂ <N0, the voltage basic frequency fs is a negative frequency. Negative frequency means that the phase order is reversed. The region where the voltage fundamental frequency fs is negative is a region where rotational energy is regenerated by the electromagnetic interaction of the first and second rotors 7 and 8 in the stator winding 25.
For this reason, in the area | region where the voltage fundamental frequency fs becomes negative, the electric power supply from the outside is unnecessary. On the other hand, although the voltage basic frequency fs is positive in the region of N ₂ ≧ N0, the frequency can be lowered by the second term (−66.67) as shown in the equation (1b), and the external power can be reduced.
The rotating electrical machine 2A of the present embodiment can transmit the torque of the first rotor 7 to the second rotor 8 and amplify the torque of the second rotor in the A state, but this is necessary for this torque amplification. External power can be reduced.

[Detailed Description of Vehicle Drive Device 1]
Next, the vehicle drive device 1 using the rotating electrical machine device 2 described above will be described in detail.
As shown in FIG. 12, the rotating electrical machine 2A is arranged between the engine E and the transmission T of the vehicle, the crankshaft of the engine E is connected to the input shaft 3, and the vehicle is driven to the output shaft 4. A transmission shaft of a transmission T that transmits power to the wheels is connected.

  The engine E is controlled based on a command value from the engine ECU 40. Specifically, an engine actuator (not shown) such as an injector, a spark plug, or an intake valve is controlled based on the command value from the engine ECU 40. The engine E is controlled by controlling the fuel injection amount, the ignition timing, and the intake air amount.

The rotating electrical machine 2A is controlled via an inverter 29 based on a command value from the MG-ECU 41.
The MG-ECU 41 functions as the first rotor speed calculation unit 32, the calculation unit of the second rotor speed detection unit 33, the drive command value calculation unit 34, and the drive state selection unit 35 of the control device 2B. The engine ECU 40 and the MG-ECU 41 are connected to an in-vehicle LAN 42 (for example, a network based on the CAN protocol), and information such as signals and calculation values can be shared.
Further, as the first rotor angle detection means 31, a rotation angle sensor 44 is provided in the vicinity of the rotation axis of the first rotor 7. A rotation angle sensor 45 that detects the rotation angle of the second rotor 8 is provided in the vicinity of the rotation axis of the second rotor 8.

As shown in FIG. 4, in the control device 2B, the driving state selection unit 35 sets the driving state of the first rotor 7 and the second rotor 8 to the first driving state or the second driving state based on the state of the vehicle. The selection is made and the command value (command value corresponding to the selected drive state) is transmitted to the current phase calculation means 34a of the drive command value calculation means 34.
The current phase calculation unit 34 a calculates a current phase command value based on outputs from the drive state selection unit 35 and the first rotor angle detection unit 31.

In addition, as described above, the voltage basic frequency calculation unit 34 b outputs the rotation speed of the first rotor 7 output from the first rotor speed calculation unit 32 and the first output from the second rotor speed detection unit 33. Based on the rotational speed of the two-rotor 8, the voltage basic frequency fs is calculated. The current amplitude calculation unit 34c calculates the current amplitude according to the required output torque.
The command values (current phase, voltage basic frequency fs, current amplitude) calculated by the drive command value calculating means 34 (current phase calculating means 34a, voltage basic frequency calculating means 34b, current amplitude calculating means 34c) are supplied to the inverter 29. The stator winding 25 is energized via the inverter 29, and the rotating electrical machine 2A is controlled to a desired driving state.

In addition, the vehicle drive device 1 includes a charge state detection unit that detects a charge state of the storage battery 30 that supplies power to the inverter 29, and an acceleration request degree calculation unit that calculates the acceleration request degree of the vehicle.
The state of charge detection means detects SOC, which is an indicator of the state of charge of the storage battery 30, and is provided in the inverter 29 or the MG-ECU 41, for example.
For example, the acceleration request degree calculation means calculates the accelerator opening as the acceleration request degree, and is provided in the engine ECU 40.

Hereinafter, the control process in MG-ECU 41 will be specifically described based on the flowchart shown in FIG. In the present embodiment, the drive state selection means 35 selects the drive state of the rotating electrical machine 2A based on the vehicle state grasped from the vehicle speed, the SOC, and the acceleration request level.
First, in S1 to S3, three conditions of vehicle speed, SOC, and acceleration request are determined.

For the vehicle speed, the MG-ECU 41 refers to a calculated value (vehicle speed) calculated based on a signal from a vehicle speed sensor (not shown).
The SOC is referred to by the MG-ECU 41 via the inverter 29 connected to the storage battery 30.
In this embodiment, the accelerator opening corresponds to the acceleration request degree. That is, the acceleration request degree calculation means in the engine ECU 40 calculates a calculated value (accelerator opening) based on a signal from an accelerator opening sensor (not shown). The calculated value is referred to by the MG-ECU 41 via the in-vehicle LAN 42.

In S1, the vehicle speed (calculated value) is compared with a determination reference value Vb (for example, 30 km / h). When the vehicle speed is less than Vb, the process proceeds to S2, and when the vehicle speed is equal to or higher than Vb, the process proceeds to S4.
In S2, the SOC is compared with the determination reference level Vs. If the SOC is equal to or higher than Vs, the process proceeds to S3. If the SOC is lower than Vs, the process proceeds to S4.
In S3, the accelerator opening (ACR) is compared with the determination reference value Va. If the accelerator opening is less than Va, the process proceeds to S10. If the accelerator opening is greater than Va, the process proceeds to S4.

  In S10, EV mode control for driving the vehicle only by the rotating electrical machine 2A is executed. In the EV mode control, the drive state selection unit 35 selects the rotating electrical machine 2A to be in the first drive state, and in response to this selection, the phase command of the current supplied to the stator winding 25 in the drive command value calculation unit 34 is selected. The value is calculated, and the voltage fundamental frequency fs and the current amplitude are calculated. Then, the command values (current phase, voltage basic frequency fs, current amplitude) calculated by the drive command value calculation means 34 are transmitted to the inverter 29, and the stator winding 25 is energized via the inverter 29. The rotating electrical machine 2A is controlled to the first drive state.

When the rotating electrical machine 2A is brought into the first drive state, the state A or the state C shown in FIG. 10 is obtained. In the A state, the torque Tq2 of the second rotor 8 connected to the output shaft 4 acts counterclockwise (rotation direction side). Therefore, the region in the A state mainly operates the rotating electrical machine 2A as an electric motor. The mechanical power can be output from the second rotor 8 to drive the driving wheels. The region in the C state can be used for regeneration in which the rotating electrical machine 2A is operated as a generator, and mechanical power input from the drive wheels to the second rotor 8 is converted into electric power and recovered. The alternating current generated in the stator winding 25 by the rotation of the second rotor 8 can be rectified by the inverter 29 and charged to the storage battery 30.
That is, the driving state of the rotating electrical machine 2A in the EV mode is the first driving state when the input shaft is stopped (when the engine is stopped), the rotating electrical machine 2A is used for powering / regeneration, and the vehicle is driven only by the rotating electrical machine 2A. Is done.

Next, in S4, the engine speed Ne calculated in the engine ECU 40 is referred to by the MG-ECU 41 via the in-vehicle LAN 42 and compared with the determination reference value Ne0. If the engine speed Ne is equal to or greater than Ne0, the process proceeds to S20. If the engine speed Ne is less than Ne0, the process proceeds to S5.
Here, the determination reference value Ne0 is the number of revolutions estimated to be that the engine E has already completed explosion and has generated rotational torque if it is equal to or greater than the determination reference value Ne0. For this reason, when it becomes NO determination in S4, it is estimated that the engine E is in a substantially stopped state.

In S20, HV mode control for driving the vehicle by the engine E and the rotating electrical machine 2A is executed. In the HV mode control, the drive state selection unit 35 selects the rotary electric machine 2A to be in the first drive state, and in response to this selection, the phase command of the current supplied to the stator winding 25 in the drive command value calculation unit 34 is selected. The value is calculated, and the voltage fundamental frequency fs and the current amplitude are calculated. Then, the command values (current phase, voltage basic frequency fs, current amplitude) calculated by the drive command value calculation means 34 are transmitted to the inverter 29, and the stator winding 25 is energized via the inverter 29. The rotating electrical machine 2A is controlled to the first drive state.
Note that the driving state of the rotating electrical machine 2A in the HV mode is a first driving state in which an input torque from the input shaft 3 is generated (a rotating torque generating state of the engine E), and the rotating electrical machine 2A is used for power running / regeneration. The vehicle is driven by the engine E and the rotating electrical machine 2A.

  That is, there are three conditions: a first condition that the vehicle speed is less than the reference determination value Vb, a second condition that the SOC is equal to or higher than the determination reference level Vs, and a third condition that the accelerator opening is less than the determination reference value Va. If at least one of the conditions is not satisfied and it is determined that the engine E is generating rotational torque, the rotating electrical machine 2A is controlled to the first drive state.

In S5, ON / OFF determination of the flag STR requesting restart of the engine E is performed. If it is determined NO in S4 but the flag STR is OFF, the process proceeds to S6 and the flag STR is turned ON.
On the other hand, when the flag STR is ON, the process proceeds to S7, the rotational speed _{N 1} and the rotational speed difference of the rotational speed _{N 2} of the second rotor 8 of the first rotor 7 _| N 1 -N ₂ | predetermined tolerance It is determined whether the state less than ΔNc has continued for a predetermined time ΔTc. The rotation speed difference | N ₁ −N ₂ | is calculated in the MG-ECU 41 when signals from the rotation angle sensor 44 and the rotation angle sensor 45 are input to the MG-ECU 41.

If the determination result in S7 is NO (not continued), the process proceeds to S30, and the engine restart mode control is continuously executed until the rotation speed is stabilized.
If the determination result in S7 is YES, the process proceeds to S8, the flag STR is turned OFF, and then the process proceeds to S20 to return to the HV mode control.

That is, if the determination is NO in S4, engine restart mode control is executed until the STR flag is turned off. Conditions for the STR flag OFF, that is, the end condition of the engine restart mode control, the difference between the rotational speed _{N 2} of the rotational speed _{N 1} and the second rotor 8 of the first rotor 7 _| N 1 _-N 2 | Is a condition that the state of less than the predetermined allowable value ΔNc has continued for a predetermined time ΔTc.

  In the engine restart mode control, the drive state selection means 35 selects the rotating electrical machine 2A to be in the second drive state, and in response to this selection, the drive command value calculation means 34 determines the current supplied to the stator winding 25. The phase command value is calculated, and the voltage basic frequency fs and the current amplitude are calculated. Then, the command values (current phase, voltage basic frequency fs, current amplitude) calculated by the drive command value calculation means 34 are transmitted to the inverter 29, and the stator winding 25 is energized via the inverter 29. The rotating electrical machine 2A is controlled to the second drive state.

  When the rotating electrical machine 2A is brought into the second drive state, the state B is shown in FIG. In the B state, since the torque Tq1 of the first rotor 7 and the torque Tq2 of the second rotor 8 are in the same direction, the engine E (input shaft 3) is moved from the engine stopped state to the second rotor 8 (output shaft 4). Can be started by being rotated by the rotor on the side.

That is, when at least one of the first to third conditions is not satisfied and the engine E is in a stopped state, the rotating electrical machine 2A is controlled to the second drive state.
In the engine restart mode control, the rotating electrical machine 2A is brought into the second drive state, whereby the engine E (input shaft 3) is rotated by the rotating electrical machine 2A and the engine E is restarted.

  Note that each criterion described in FIG. 13 may be provided with hysteresis, delay time, and the like for preventing hunting.

[Effects of Example 1]
According to the rotating electrical machine apparatus 2 described in the present embodiment, by changing the current phase of the energization current to the stator winding 25, in addition to the first driving state that can be used for power running and regeneration, the output shaft Therefore, it is possible to realize the second driving state necessary for rotating the input shaft 3 from 4.
Since the direction of torque of the first rotor 7 is determined by the current state of the second rotor 8, originally it was necessary to grasp the current state of the second rotor 8, but in this embodiment, Without using a sensor for detecting the current state of the two-rotor 8, two types of drive states, the first drive state and the second drive state, can be realized by simply changing the current phase of the stator winding 25.

For this reason, in the vehicle drive device 1 including the rotating electrical machine device 2 of the present embodiment, an engine restart mode in which the engine E is rotated and started can be realized.
That is, using the second driving state of the rotating electrical machine 2A, the second rotor 8 connected to the output shaft 4 (transmission side) is changed from the state where the first rotor 7 connected to the input shaft 3 (engine side) is stopped. The engine E can be rotated and rotated. This eliminates the need for a separate starting motor.

  In this embodiment, the basic voltage frequency fs applied to the stator winding 25 is controlled using the equation (1a). According to this, since the rotational speed, the number of pole pairs, and the voltage basic frequency fs are linearly related, the rotational speed can be easily controlled.

  In the present embodiment, the driving state selection means 35 determines the first and second driving states based on the determination of the three conditions of the vehicle speed, the SOC, and the acceleration request level and the determination of whether or not the engine is stopped. Selected. According to this, the first and second drive states can be selected by reflecting the magnitude of the acceleration request degree.

[Example 2]
The second embodiment will be described with reference to FIG. 11 with a focus on differences from the first embodiment.
In Example 1, the number of pole pairs P ₁ = 4 and the number of pole pairs P ₂ = 8, and the number of pole pairs P ₁ was smaller than the number of pole pairs P _{2. In} this example, the number of pole pairs P ₁ is the number of pole pairs. greater than P _2.
For example, the number of pole pairs P ₁ = 8 and the number of pole pairs P ₂ = 4.
In the formula (1a), the voltage basic frequency fs and the rotation speed N of the second rotor 8 when the rotation speed N ₁ of the first rotor 7 is 1000 rpm, the pole pair number P ₁ is 8, and the pole pair number P ₂ is 4. The relationship with ₂ is shown by the correlation line of the two-dot chain line in FIG.

In FIG. 11, when the number of pole pairs P ₁ = 4 and the number of pole pairs P ₂ = 8 (Example 1) is compared with the case of the number of pole pairs P ₁ = 8 and the number of pole pairs P ₂ = 4 (Example 2). , Fs = 0, the rotation speed N0 is larger in the second embodiment.
That is, in Example 1, N0 = 333 rpm, but in Example 2, N0 = 667 rpm. That is, the region in which the voltage fundamental frequency fs is negative spreads to a higher speed region (a larger speed ratio) than in the first embodiment.

According to this, the range in which torque can be applied to the first rotor 7 and the second rotor 8 without supplying electric power from the outside extends to the high speed range.
That is, in the A state, the range in which the external power required to transmit the torque of the first rotor 7 to the second rotor 8 and amplify the torque of the second rotor 8 can be reduced to the high speed range.

Example 3
A third embodiment will be described with reference to FIG. 14 with a focus on differences from the first embodiment.
In the present embodiment, the first winding 16 and the second winding 17 are connected in series with each other as shown in FIG. That is, the first winding 16 and the second winding 17 are connected in series and in the order of the positive phase.
In the present embodiment, similarly to the first embodiment, the first driving state and the second driving state can be realized by changing the current phase of the stator winding 25.

In the case where the first winding 16 and the second winding 17 are connected in series and in positive phase order, the voltage fundamental frequency fs is
fs = P ₁ n ₁ − (P ₁ −P ₂ ) n ₂ Formula (7)
It is controlled by the relational expression.
This is because the relationship between f1 represented by equation (2) and f2 represented by equation (3) is
f1 = f2 Formula (8)
It is because it becomes.

Example 4
[Configuration of Example 4]
The fourth embodiment will be described with reference to FIGS. 15 and 16 focusing on differences from the first embodiment.
In the present embodiment, the first rotor 7 is connected to the output shaft 4, and the second rotor 8 is connected to the input shaft 3.
That is, in the vehicle drive device 1 of the present embodiment, the crankshaft of the engine E is connected to the second rotor 8, and the transmission shaft of the transmission T is connected to the first rotor 7.

In the present embodiment, similarly to the first embodiment, the first driving state and the second driving state can be realized by changing the current phase of the stator winding 25.
FIG. 16 shows the balance of torque in each state in this embodiment.
First, in the first drive state (the A state and the C state), the second rotation in which the torque Tq1 of the first rotor 7 and the torque Tq2 of the second rotor 8 are opposite to each other and connected to the input shaft 3. The sum of the torque Tq2 of the child 8 and the torque Tq3 of the stator 9 is balanced with the torque Tq1 of the first rotor 7 connected to the output shaft 4.
In particular, in the A state, since the torque Tq1 of the first rotor 7 connected to the output shaft 4 acts counterclockwise (rotation direction side), the region in the A state mainly operates using the rotating electrical machine 2A as an electric motor. Thus, it can be used for powering to output mechanical power from the first rotor 7.

  In the C state, torque acts on the opposite side to the A state. Therefore, the region in the C state can be used for regeneration in which the rotating electrical machine 2A is operated as a generator, and mechanical power input from the drive wheels to the first rotor 7 is converted into electric power and recovered. The alternating current generated in the stator winding 25 by the rotation of the first rotor 7 can be rectified by the inverter 29 and charged to the storage battery 30.

In the second drive state (B state), the torque Tq1 of the first rotor 7 and the torque Tq2 of the second rotor 8 are in the same direction, and the torque Tq1 of the first rotor 7 and the second rotor 7 8 is balanced with the torque Tq3 of the stator 9.
According to this, since the torque Tq1 of the first rotor 7 and the torque Tq2 of the second rotor 8 are in the same direction, the engine (input shaft 3) can be rotated and started from the engine stopped state. .

[Effects of Example 4]
In this embodiment, the input shaft 3 is connected to a rotor (second rotor 8) on the side close to the stator 9.
The rotor closer to the stator 9 can easily perform fine torque control by energizing the stator winding 25. Therefore, by setting the second rotor 8 on the input shaft side, torque control on the engine shaft side is facilitated, and vibration suppression control is also possible. As a result, the vibration of the engine E is reduced.

Example 5
A fifth embodiment will be described with reference to FIG. 17 focusing on differences from the first embodiment.
In the present embodiment, the stator 9 is disposed on the inner periphery of the second rotor 8, and the first rotor 7 is disposed on the outer periphery of the second rotor 8. In other words, the second rotor 8 is disposed on the outer periphery of the stator 9 and the first rotor 7 is disposed on the outer periphery of the second rotor 8.
According to this, since the opposing area of the first rotor 7 and the second rotor 8 is large, the capacity of torque that can be transmitted between the first rotor 7 and the second rotor 8 is increased.

[Modification]
The rotating electrical machine 2A of the example had radial air gaps between the first rotor 7 and the second rotor 8 and between the second rotor 8 and the stator 9, It may be an axial gap type having an axial air gap between the first rotor 7 and the second rotor 8 and between the second rotor 8 and the stator 9.

  In the embodiment, the control device 2B includes a first rotor angle detection unit 31, a first rotor speed calculation unit 32, a second rotor speed detection unit 33, an inverter 29, a drive command value calculation unit 34, and a drive state. The drive command value calculating means 34 includes a current phase calculating means 34a, a voltage basic frequency calculating means 34b, and a current amplitude calculating means 34c. However, as shown in FIG. The apparatus 2B includes a first rotor angle detection unit 31, an inverter 29, a drive command value calculation unit 34, and a drive state selection unit 35. The drive command value calculation unit 34 has a current phase calculation unit 34a. It may be a configuration. That is, the drive command value calculation means 34 may be configured to calculate only the current phase command value.

  In the embodiment, the three conditions of the vehicle speed, the SOC, and the acceleration request level are determined when selecting the driving state. However, the determination of the two conditions of the SOC and the acceleration request level may be performed. That is, the drive state selection unit 35 does not satisfy any one of the first condition that the state of charge of the storage battery 30 is greater than or equal to a predetermined level and the second condition that the degree of acceleration request is less than the predetermined level. When the engine E is in a stopped state, the second drive state may be selected.

  In the embodiment, the first rotor angle detection unit 31 is a rotation angle sensor that detects the rotation angle of the first rotor 7, but the first rotor angle detection unit 31 is the first rotor 7. The rotation angle of the first rotor 7 is estimated based on the electrical state information of the rotating electrical machine (voltage and current information obtained on the inverter 29 side). Also good.

DESCRIPTION OF SYMBOLS 1 Vehicle drive device 2 Rotating electrical machinery device 2A Rotating electrical machinery 2B Control device 3 Input shaft 4 Output shaft 7 First rotor 8 Second rotor 9 Stator 16 First winding 17 Second winding 25 Stator winding 29 Inverter 30 Storage battery 31 First rotor angle detecting means 32 First rotor speed calculating means 33 Second rotor speed detecting means 34 Drive command value calculating means 34a Current phase calculating means 34b Voltage fundamental frequency calculating means 34c Current amplitude calculating means 35 Driving state selection means E Engine T Transmission

Claims (10)

The first rotor, the second rotor, and the stator are disposed on the same axis, and the second rotor is disposed between the first rotor and the stator in a radial direction or an axial direction. Rotating electric machine,
A rotating electrical machine apparatus comprising a control device for controlling the driving of the rotating electrical machine,
The second rotor is wound on the side facing the first rotor and is formed of a multiphase coil, and is wound on the side facing the stator and is multiphase. A second winding composed of a coil,
When the number of pole pairs of the first rotor is P ₁ and the number of pole pairs of the stator is P ₂ , the number of pole pairs of the first winding is P ₁ , and the number of pole pairs of the second winding is P ₂ ,
The first winding and the second winding are connected in series and in the order of normal phase or reverse phase with each other,
The stator has a stator winding composed of multiphase coils,
The control device includes:
First rotor angle detection means for detecting a rotation angle of the first rotor;
An inverter for supplying multiphase AC power to the stator winding;
Drive command value calculating means for calculating a drive command value for the inverter;
As a driving state of the first rotor and the second rotor, a first driving state in which torques of the first rotor and the second rotor are opposite to each other, and the first rotor and the second rotor, Drive state selection means for selecting any one of the second drive states in which the torque with the rotor is in the same direction, and
The drive command value calculation means calculates a phase command value of the current output from the inverter to the rotating electrical machine based on the drive state selected by the drive state selection means and the rotation angle of the first rotor. A rotating electrical machine having a phase calculation means. The rotating electrical machine apparatus according to claim 1,
The control device includes: a first rotor speed calculating unit that calculates a rotation speed of the first rotor based on a rotation angle of the first rotor; and a second rotor that detects the rotation speed of the second rotor. Speed detection means,
Voltage basic frequency calculation in which the drive command value calculating means calculates a basic frequency fs of a voltage applied to the stator winding based on the rotation speed of the first rotor and the rotation speed of the second rotor. A rotating electrical machine apparatus characterized by comprising means. The rotating electrical machine apparatus according to claim 1 or 2,
Pole pairs P _1, the rotary electric machine and wherein the greater than the number of pole pairs P _2. In the rotating electrical machine apparatus according to any one of claims 1 to 3,
The rotating electrical machine apparatus, wherein the stator is disposed on an inner periphery of the second rotor, and the first rotor is disposed on an outer periphery of the second rotor. A vehicle drive device comprising the rotating electrical machine device according to any one of claims 1 to 4,
A storage battery for supplying power to the inverter; and a charging state detection means for detecting a charging state of the storage battery,
Either the first rotor or the second rotor is connected to an engine shaft, and the other of the first rotor or the second rotor is connected to a transmission shaft;
The vehicle drive device according to claim 1, wherein the drive state selection unit selects one of the first drive state and the second drive state based on a charge state from the charge state detection unit. The vehicle drive device according to claim 5,
Acceleration request degree calculating means for calculating the acceleration request degree is provided,
The driving state selecting means includes
The engine is in a stopped state when at least one of the first condition that the state of charge of the storage battery is equal to or higher than a predetermined level and the second condition that the degree of acceleration request is lower than the predetermined level is not satisfied. In some cases, the vehicle drive device selects the second drive state. A first rotor, a second rotor, and a stator arranged on the same axis;
The second rotor is disposed between the first rotor and the stator in the radial direction or the axial direction, and is wound on a side facing the first rotor and is a multiphase coil. A first winding configured and a second winding wound on the side facing the stator and configured with a multiphase coil;
When the number of pole pairs of the first rotor is P ₁ and the number of pole pairs of the stator is P ₂ , the number of pole pairs of the first winding is P ₁ , and the number of pole pairs of the second winding is P ₂ ,
The first winding and the second winding are connected in series and in a normal phase order or a reverse phase order,
The stator is a method of controlling a rotating electrical machine having a stator winding composed of multiphase coils,
As a driving state of the first rotor and the second rotor, a first driving state in which torques of the first rotor and the second rotor are opposite to each other, and the first rotor and the second rotor, A drive state selection step of selecting any one of the second drive states in which the torque with the rotor is in the same direction;
A drive command value calculation step for calculating a drive command value to an inverter that supplies multiphase AC power to the stator winding;
The drive command value calculation step calculates a phase command value of a current output from the inverter to the rotating electrical machine based on the drive state selected in the drive state selection step and the rotation angle of the first rotor. A control method for a rotating electrical machine. In the control method of the rotary electric machine according to claim 7,
In the drive command value calculation step, a basic frequency fs of a voltage applied to the stator winding is calculated based on a rotation speed of the first rotor and a rotation speed of the second rotor. Control method for rotating electrical machine. A first rotor, a second rotor, and a stator are disposed on the same axis, and the second rotor is disposed between the first rotor and the stator in a radial direction or an axial direction. A first winding wound on the side facing the first rotor and configured with a multiphase coil, and wound on the side facing the stator and configured with a multiphase coil. and a second winding that, P ₁ number of pole pairs of the first rotor _and the pole pairs of the stator and P _2, pole pairs of the first winding is P _1, the second Volume the pole pairs of the line is P _2, wherein the first winding and the second winding, in series, and is connected to the positive phase sequence or reverse phase order with each other, the stator is comprised of a multi-phase coil A rotating electrical machine having a stator winding,
An inverter for supplying multiphase AC power to the stator winding;
And a storage battery for supplying power to the inverter,
Control of a vehicle drive device in which either one of the first rotor or the second rotor is connected to an engine shaft and the other of the first rotor or the second rotor is connected to a transmission shaft A method,
Based on the state of charge of the storage battery, as a driving state of the first rotor and the second rotor, a first driving state in which torques of the first rotor and the second rotor are opposite to each other; A drive state selection step of selecting any one of the second drive states in which the torques of the first rotor and the second rotor are in the same direction;
A drive command value calculating step for calculating a drive command value for the inverter;
The drive command value calculation step calculates a phase command value of a current output from the inverter to the rotating electrical machine based on the drive state selected in the drive state selection step and the rotation angle of the first rotor. A control method for a vehicle drive device. The method for controlling a vehicle drive device according to claim 9,
In the drive state selection step, when at least one of a first condition that the state of charge of the storage battery is equal to or higher than a predetermined level and a second condition that the degree of acceleration request is lower than the predetermined level is not satisfied. And the control method of the vehicle drive device characterized by selecting said 2nd drive state, when an engine is a stop state.

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