JP5067325B2 - Rotating electrical machine control system - Google Patents

Description

  The present invention relates to a rotating electrical machine control system, and more particularly, to a rotating electrical machine control system for two rotating electrical machines.

  A vehicle equipped with a rotating electrical machine may be provided with two rotating electrical machines and share a role such that one is for driving a vehicle and one is for power generation. As described above, the two rotating electrical machines having different roles may be controlled independently of each other, but sometimes it is necessary to consider the mutual relationship of the control of the two rotating electrical machines.

  For example, Patent Document 1 discloses a noise and vibration generated when a capacitor for smoothing a DC power source is discharged by MG1 and MG2 as a vehicle motor control device in the case where MG1 and MG2 motors are provided on a drive shaft of a vehicle. In order to suppress this, it is disclosed that the two inverter circuits are controlled so that the total torque of MG1 and MG2 becomes zero.

  Further, in Patent Document 2, as a motor driving device, MG1 and MG2 are generally driven with a control cycle and a carrier frequency that are asynchronous with each other, but when changing the carrier frequency according to the operating state of the motor, It has been pointed out that there may be a case where the carrier frequency and the other control cycle have a relationship of 1: n (n is a natural number), and at this time, low-frequency vibration may occur in the sampling value of the motor current. Here, it is disclosed that in such a case, the other control cycle is changed so as not to have a 1: n relationship.

  As a technique related to the present invention, Patent Document 3 discloses radial noise (magnetic noise) of the sixth and twelfth frequencies of the fundamental frequency components of the rotor magnetomotive force and the stator current in the AC rotating electrical machine apparatus. It is said that it is a major auditory thing. When a single rotating electrical machine is energized with a phase current for torque generation and a harmonic current for magnetic noise reduction through different phase winding groups, it reduces magnetic noise. It is disclosed that the harmonic current for use is a frequency that is 7 or 13 times the frequency of the fundamental wave of the phase current for torque generation.

JP 2006-42575 A JP 2007-236110 A JP 2005-117863 A

  As described in Patent Document 3, in an AC rotating electrical machine, sixth harmonics may be a problem. This 6th harmonic is called the electrical 6th order. However, if the electrical cycle of the two rotating electrical machines is 6: 1, the electrical 6th order of one electrical cycle, that is, 6th It occurs that the period of the second harmonic is synchronized with one electrical period on the other side. In such a case, the inverter input voltage fluctuates in synchronism due to the electric sixth-order power fluctuation on one side, and fluctuates in synchronism with the other electric primary. The controllability of the rotating electrical machine on the side is reduced.

  In Patent Document 2, it is stated that the control cycle on one side and the carrier cycle on the other side do not have a 1: n relationship. There is no mention of how to synchronize.

  An object of the present invention is to suppress a decrease in controllability of a rotating electrical machine when the electrical 6th order of the electrical cycle of one side of control and the electrical cycle of control of the other side are synchronized in two rotating electrical machines. An object of the present invention is to provide a rotating electrical machine control system that makes it possible.

  The rotating electrical machine control system according to the present invention includes a first rotating electrical machine connected to the first inverter, a second rotating electrical machine connected to the second inverter, and a control unit that controls operations of the first inverter and the second inverter. The control unit compares the electrical cycle of the second rotating electrical machine with the electrical cycle of the first rotating electrical machine, and the electrical cycle of the second rotating electrical machine is 6 of the electrical cycle of the first rotating electrical machine. Electric cycle determination means for determining whether or not the control frequency is double, control mode determination means for determining whether or not the control mode of the first rotating electrical machine is a rectangular wave control mode, and determination by the electric cycle determination means And changing means for changing the control frequency of the second inverter based on the judgment of the control mode judging means.

  In the rotating electrical machine control system according to the present invention, it is preferable that the changing means changes the control gain of the second inverter.

  Further, in the rotating electrical machine control system, the carrier frequency used for the control of the second inverter is set to a low frequency within the control range of the second rotating electrical machine based on the determination of the electrical single cycle determination means and the determination of the control mode determination means. It is preferable to provide means for changing to the side.

  With the above configuration, the rotating electrical machine control system compares the electrical cycle of the second rotating electrical machine with the electrical cycle of the first rotating electrical machine, and the electrical cycle of the second rotating electrical machine is equal to the electrical cycle of the first rotating electrical machine. It is determined whether or not it is six times, and it is determined whether or not the control mode of the first rotating electrical machine is a rectangular wave control mode. Based on these determinations, the control frequency of the second inverter is changed. . As a result, the fluctuation cycle of the inverter input voltage due to the control of the second rotating electrical machine deviates from the electrical cycle of the control of the first rotating electrical machine. It is possible to suppress a decrease in controllability of the first rotating electrical machine due to the superposition of electrical sixth-order noise in one cycle.

  If the structure of the first rotating electrical machine is the same as that of the second rotating electrical machine, instead of comparing the electrical cycle of the second rotating electrical machine with the electrical cycle of the first rotating electrical machine, The rotational speed and the rotational speed of the second rotating electrical machine may be compared. In this case, it can be determined whether or not the rotational speed of the first rotating electrical machine is six times the rotational speed of the second rotating electrical machine.

  In the rotating electrical machine control system, the control cycle of the second inverter is changed by changing the control gain of the second inverter. By changing the control gain, the controllability of the second rotating electrical machine can be slightly reduced, and the fluctuation of the control cycle of the second inverter can be increased. Thereby, the fluctuation cycle of the inverter input voltage by the control of the second rotating electrical machine can be shifted with respect to the electrical cycle of the control of the first rotating electrical machine.

  Further, in the rotating electrical machine control system, the carrier frequency used for the control of the second inverter is set to a low frequency within the control range of the second rotating electrical machine based on the determination of the electrical single cycle determination means and the determination of the control mode determination means. Change to the side. By changing the carrier frequency to the low frequency side, the controllability of the second rotating electrical machine can be slightly reduced, and the fluctuation of the control cycle of the second inverter can be increased. Thereby, the fluctuation cycle of the inverter input voltage by the control of the second rotating electrical machine can be shifted with respect to the electrical cycle of the control of the first rotating electrical machine.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. In the following, a motor / generator mounted on a vehicle will be described as a rotating electric machine, but a stationary motor / generator other than the one mounted on the vehicle may be used. In addition, the rotating electrical machine may simply have a function as a motor, or may simply have a function as a generator. The power supply circuit is described as having a power storage device, a voltage converter, and an inverter circuit. However, the power supply circuit may have other elements such as a system main relay, a low-voltage DC / DC converter, and the like. Good.

  Below, the same code | symbol is attached | subjected to the same element in all the drawings, and the overlapping description is abbreviate | omitted. In the description in the text, the symbols described before are used as necessary.

  FIG. 1 is a diagram showing a configuration of a rotating electrical machine control system 10 mounted on a vehicle. The rotating electrical machine control system 10 is a system that controls the operation of the two rotating electrical machines 12, 14. In this case, in particular, the first rotating electrical machine affects the influence of harmonics called the electric sixth order of the second rotating electrical machine 14. 12 has a function of performing control so as not to reach the control of 12.

  The rotating electrical machine control system 10 includes two rotating electrical machines 12 and 14, a power supply circuit that drives them, and an MG1 control unit 50 and an MG2 control unit 60 that control them. Here, the power supply circuit is shown as a power storage device 20, a smoothing capacitor 22 on the power storage device side, a voltage converter 24, a smoothing capacitor 26 on the inverter side, and two inverters 28 and 30.

  Of the two rotating electrical machines, the first rotating electrical machine (MG1) 12 is, for example, a motor / generator (MG) mounted on a vehicle, and in this case, the first rotating electrical machine (MG1) 12 is connected to an engine (not shown). This is a three-phase synchronous rotating electric machine having a function of generating electric power with the driving force of

  The second rotating electrical machine (MG2) 14 is a motor / generator (MG) mounted on the vehicle, which functions as an electric motor when electric power is supplied and functions as a generator during braking. Electric. The second rotating electrical machine 14 mounted on the vehicle has a function of assisting engine power transmitted to a vehicle axle (not shown) to increase driving force.

  The power storage device 20 constituting the power supply circuit is a chargeable / dischargeable secondary battery. As the power storage device 20, for example, a lithium ion assembled battery or a nickel hydride assembled battery having a terminal voltage of about 200 V, a capacitor, or the like can be used.

The voltage converter 24 is a circuit having a function of boosting the voltage on the power storage device 20 side to, for example, about 650 V using the energy storage action of the reactor, and is also called a boost converter. The voltage converter 24 has a bidirectional function, and when the electric power from the inverters 28 and 30 is supplied as charging power to the power storage device 20 side, the high voltage on the inverters 28 and 30 is stepped down to a voltage suitable for the power storage device. It also has an effect. In FIG. 1, the high voltage side output of the voltage converter 24, that is, the supply voltage to the inverters 28 and 30 is indicated by V _H.

  The smoothing capacitor 22 on the power storage device side and the smoothing capacitor 26 on the inverter side, which are two capacitors provided before and after the voltage converter 24, have a function of suppressing voltage fluctuations caused by load fluctuations and the like.

  The two inverters 28 and 30 convert the high-voltage DC power into AC three-phase drive power and supply it to the rotating electrical machines connected to each, and conversely, the AC three-phase regenerative power from each rotating electrical machine This circuit has a function of converting into charging power. Of the two inverters 28 and 30, the one connected to the first rotating electrical machine (MG1) 12 is the second one connected to the first rotating electrical machine (MG1 inverter) 28 and the second rotating electrical machine (MG2) 14 is the second. Inverter (MG2 inverter) 30 can be called. The inverters 28 and 30 have the same basic configuration, and include a plurality of switching elements and a plurality of diodes.

  The MG1 control unit 50 is a control circuit having a function of controlling the operation of the first rotating electrical machine (MG1) by controlling the operation of the switching element in the first inverter 28. The inverter is generally controlled by PWM control or sine wave control, but overmodulation control and rectangular wave control are performed according to the required output to the rotating electrical machine. For example, when MG1 generates power at high speed, the MG1 control unit 50 controls the operation of the first inverter 28 using rectangular wave control. These control functions are executed by the switching control module 52.

  The MG2 control unit 60 is a control circuit having a function of controlling the operation of the second rotating electrical machine (MG2) by controlling the operation of the switching element in the second inverter 30. Also here, the switching control module 62 performs PWM control, overmodulation control, and rectangular wave control in accordance with the required output to the rotating electrical machine. Here, in particular, based on the relationship between the electrical cycle of the second rotating electrical machine 14 and the electrical cycle of the first rotating electrical machine 12, and whether the control mode of the first rotating electrical machine 12 is rectangular wave control. In addition, there is an electric sixth order determination module 64 for determining whether or not the electric sixth order influence of the second rotating electric machine 14 affects the rectangular wave control of the first rotating electric machine 12, and the electric sixth order influence. The MG2 control unit 60 includes a gain changing module 66 that changes the gain in the control of the second rotating electrical machine 14 and a module 68 that changes the carrier frequency in the control of the second rotating electrical machine 14 when it is determined that Composed.

  In order to execute the function of the electrical sixth determination module 64, a signal indicating the control mode in the first rotating electrical machine 12 and a signal indicating the electrical cycle of the first rotating electrical machine 12 are sent from the MG1 control unit 50. The signal is transmitted to the MG2 control unit 60 via an appropriate signal line. Further, in the second rotating electrical machine 14, a signal indicating the electrical cycle and a signal indicating the current are detected using an appropriate sensor, and the result is sent to the MG2 controller 60 via an appropriate signal line. Is transmitted.

  The MG1 control unit 50 and the MG2 control unit 60 correspond to a control unit that controls the two inverters 28 and 30 in the rotating electrical machine control system 10 as described above. The operation of the control unit is performed under the control of a general ECU for controlling the entire vehicle not shown in FIG. For example, the respective switching control modules 52 and 62 control the operation of the two rotating electrical machines 12 and 14 based on the respective required torques output from the general ECU.

  The MG1 control unit 50 and the MG2 control unit 60 can be configured by a computer suitable for mounting on a vehicle. Each may be an independent computer, or the two may be integrated into a single computer. Moreover, it is good also as what includes the function of MG1 control part 50 and MG2 control part 60 in a part of function of the other control apparatus mounted in a vehicle. For example, the functions of the MG1 control unit 50 and the MG2 control unit 60 may be included in the overall ECU. Each function of the MG1 control unit 50 and the MG2 control unit 60 is realized by software, and specifically, can be realized by executing a rotating electrical machine control program. Some of these functions may be realized by hardware.

  The operation of the above configuration, in particular, the functions of the MG1 control unit 50 and the MG2 control unit 60 will be described in detail below with reference to FIGS. FIG. 2 is a flowchart showing a procedure for suppressing the influence on the sixth electrical, and FIG. 3 is a diagram for explaining the influence on the sixth electrical. FIG. 4 is a diagram for explaining how the influence of the electrical sixth order is suppressed by the procedure of FIG. FIG. 5 is a flowchart for explaining another procedure for suppressing the influence of the electrical sixth order. Each procedure in the flowcharts of FIGS. 2 and 5 corresponds to a processing procedure of the rotating electrical machine control program.

  In FIG. 2, in order to suppress the influence of the electric sixth order, first, it is determined whether or not the situation of the electric sixth order effect occurs. Specifically, it is determined whether the electrical cycle of the second rotating electrical machine (MG2) 14 is six times the electrical cycle of the first rotating electrical machine (MG1) 12 (S10). If the determination in S10 is affirmative, it is determined whether or not the control mode of the first rotating electrical machine (MG1) 12 is rectangular wave control (S12). The order of steps S10 and S12 may be reversed. These processes are executed by the function of the electrical sixth determination module 64 of the MG2 control unit 60.

3 shows that when the determination at S10 is affirmative and the determination at S12 is affirmative, the fluctuation waveform of the supply voltage V _H to the second inverter 30 and the control of the first rotating electrical machine 12 by the first inverter 28 are shown. It is a figure which shows the waveform of a signal. In FIG. 3, the horizontal axis represents time, and the uppermost row shows one electrical cycle of the second rotating electrical machine 14 in the fluctuation waveform of V _H. The second stage from the top is the waveform of the control signal of the first rotating electrical machine 12, but here, the state where the electrical sixth-order effect of the second rotating electrical machine is superimposed is shown. The lowermost stage is the waveform of the original control signal of the first rotating electrical machine 12, that is, the waveform of the control signal when not influenced by the control signal of the second rotating electrical machine 14.

It is known that when the operation of a rotating electrical machine is controlled with a three-phase alternating current, torque fluctuations, that is, torque ripples, always occur in the sixth electric order. Here, the electric sixth order is a sixth harmonic of one period of the electrical angle of the rotating electrical machine, and is a waveform having a period of 60 degrees with respect to an electrical angle of 360 degrees. When torque ripple occurs, the electric power of the rotating electrical machine also fluctuates in the sixth order. As a result, the inverter input side of the capacitor of the operating controls the rotary electric machine, i.e. the voltage between both terminals of the inverter side of the smoothing capacitor 26 described in FIG. 1, is also the supply voltage to the inverter 28, 30 V _H Fluctuates in the sixth order of electricity.

In FIG. 3, a fluctuation waveform 70 of V _H is shown at the top. Here, the MG2 electrical cycle is a time corresponding to one cycle of the electrical angle of the second rotating electrical machine 14. The fluctuation waveform 70 of V _H is shown as a waveform having a period of 1/6 of one electrical cycle as the sixth harmonic of one electrical cycle of MG2.

  In FIG. 3, the lowest stage is a control waveform 72 of the first rotating electrical machine 12 by the original first inverter 30. Here, since the determination in S12 is affirmative, a rectangular wave waveform is shown as the rectangular wave control mode. Since the determination in S10 is affirmative, the electrical cycle of the first rotating electrical machine 12, which is one cycle of the rectangular wave signal, is 1/6 of the electrical cycle of the second rotating electrical machine 14.

In FIG. 3, the second stage from the top shows a waveform 74 in which the fluctuation of V _H is superimposed on the control waveform of the first rotating electrical machine 12 by the original first inverter 30. This corresponds to the combined waveform of the waveform and the waveform at the bottom. As described above, the electrical sixth-order waveform is a fluctuation waveform of V _H which is also the voltage across the smoothing capacitor 26 on the inverter side, and the influence of the fluctuation similarly appears in the first inverter 28. Therefore, the second waveform 74 from the top in FIG. 3 is the control waveform of the first rotating electrical machine 12 in the second rotating electrical machine 14. This shows the control waveform of the first rotating electrical machine 12 when it is affected by the electric sixth-order torque fluctuation.

  As shown in the middle part of FIG. 3, the control waveform of the first rotating electrical machine 12 is a waveform 74 in which the half of the sine wave is added to the top of the original rectangular wave waveform. That is, the control waveform of the first rotating electrical machine is a waveform 74 that is offset from the original rectangular wave waveform by an amount corresponding to the addition of the half cycle of the sine wave. Thus, since the control waveform is offset from the original rectangular waveform, the controllability of the first rotating electrical machine 12 is degraded. This is an electrical sixth-order effect of the second rotating electrical machine 14 in the first rotating electrical machine 12.

  Returning to FIG. 2 again, when both the determinations of S10 and S12 are affirmative, the cycle of the control signal of the second rotating electrical machine 14 is changed. Thereby, it is possible to avoid that the electrical one cycle of the second rotating electrical machine 14 is changed and the electrical 6th cycle coincides with the electrical one cycle of the first rotating electrical machine 12.

  As a method of changing the cycle of the control signal of the second rotating electrical machine 14, the basic cycle itself can be changed, but the operation controllability of the second rotating electrical machine 14 is deteriorated and the cycle of the control signal is disturbed. It may be a thing. FIG. 2 shows the method. That is, the control gain of the second inverter 30 that controls the operation of the second rotating electrical machine 14 is changed (S14). This step is executed by the function of the gain changing module 66 of the MG2 control unit 60. Note that if the result in S10 is negative or the result in S12 is negative, the control gain is not changed (S16).

The control gain is, for example, the second rotation like the feedback gain when the current of the second rotating electrical machine 14 is detected and compared with the command current of the second rotating electrical machine 12 to perform feedback control. This is a control gain for causing the operation of the electric machine 14 to follow the command value. The gain change indicates that the control gain in the optimum state in normal control is shifted from the optimum state to lower the controllability than in the normal state. By reducing the controllability of following the command value of the output of the second rotating electrical machine 14 in this way, the electric sixth-order torque ripple also has a fluctuation waveform disturbed from a normal accurate sine wave fluctuation. As a result, the V _H fluctuation waveform also becomes a waveform disturbed from the sine wave, and the period does not necessarily coincide with one electrical period of the first rotating electrical machine 12.

This is shown in FIG. This figure corresponds to the uppermost stage in FIG. 3 and the second stage from the top. The V _H fluctuation waveform 76 is in the upper stage, and the control waveform 78 of the first rotating electrical machine 12 affected by V _{H is in} the lower stage. It is shown. As shown here, by changing the control gain of the second rotating electrical machine 14, the V _H fluctuation waveform 76 is changed from a clean sine wave waveform shown at the top of FIG. 3 to a disordered irregular waveform. It has become.

The control waveform 78 of the first rotary electric machine 12 change waveform 76 of the V _H is superimposed is variation waveform 76 of the V _H to the top of the original square wave waveform superimposed, the fluctuation waveform 76 Since it does not coincide with one period of the original rectangular wave waveform, it appears on the positive side and the negative side from the top level of the original rectangular wave waveform. When viewed during one electrical cycle of MG1, the positive side and the negative side from the top level of the original rectangular wave waveform are roughly offset, and the offset from the top level of the original rectangular wave waveform Is suppressed. Further, when viewed during one electrical cycle of MG2, the positive side and the negative side from the top level of the original rectangular wave waveform are almost offset, and the offset from the top level of the original rectangular wave waveform Is almost gone.

  Thus, the first rotating electrical machine 12 is changed by changing the control gain of the second inverter 30 that controls the operation of the second rotating electrical machine 14 and changing the cycle of the control signal of the second rotating electrical machine. It is possible to suppress the sixth-order electric effect of the second rotating electrical machine 14 from appearing in the operation control.

  FIG. 5 is a flowchart for explaining the processing procedure of another method for suppressing the sixth-order electric effect of the second rotating electrical machine 14 from appearing in the operation control of the first rotating electrical machine 12. Here, as in FIG. 2, it is determined whether or not the electrical cycle of the second rotating electrical machine 14 is six times the electrical cycle of the first rotating electrical machine 12 (S10), and the determination of S10 is affirmative. If there is, it is determined whether or not the control mode of the first rotating electrical machine 12 is rectangular wave control (S12). Since the contents of these steps are the same as those described with reference to FIG.

If the determinations in S10 and S12 are both affirmative, the carrier frequency in the second inverter 30 that controls the operation of the second rotating electrical machine 14 is changed (S20). This process is executed by the function of the carrier f changing module 68 of the MG2 control unit 60. The carrier frequency is preferably changed so as to change the frequency to the low frequency side. When the carrier frequency is changed to the low frequency side, the control cycle in the second rotating electrical machine 14 becomes coarse, so that the controllability is eventually lowered, and the fluctuation of V _H is also disturbed from the sine wave. Therefore, the result is the same as that described with reference to FIG. 4, and it is possible to suppress the sixth-order electric influence of the second rotating electrical machine 14 from appearing in the operation control of the first rotating electrical machine 12.

  The carrier frequency is preferably lowered within the control range of the second rotating electrical machine 14. “Within the control range of the second rotating electrical machine 14” indicates that the controllability is lower than normal controllability, but is within the target controllability range of the second rotating electrical machine 14. For example, assuming that the controllability is indicated by the characteristic value deviation rate of the second rotating electrical machine, the characteristic value deviation rate at the normal carrier frequency is ± α%, and the target characteristic value deviation rate of the second rotating electrical machine 14 is set. Can be changed to a carrier frequency corresponding to a characteristic value deviation rate between α and β. That is, within the control range of the second rotating electrical machine 14 means within the range of the carrier frequency when ± β%. As the characteristic value deviation rate, for example, the deviation rate of the actual torque output value with respect to the torque command value, or the deviation rate of the actual rotation speed with respect to the rotation speed command value can be used. As an example, if the carrier frequency indicating normal controllability is 2.5 kHz, the carrier frequency is lowered to 1.25 kHz, and if the torque deviation rate of ± β% is still secured, the carrier Reduce the frequency to 1.25 kHz. As a result, the same result as described with reference to FIG. 4 is obtained, and it is possible to suppress the sixth-order electric influence of the second rotating electrical machine 14 from appearing in the operation control of the first rotating electrical machine 12.

  In the above description, S10 is described as a comparison of one electrical cycle. However, when the first rotating electrical machine 12 and the second rotating electrical machine 14 have the same configuration, one electrical cycle or electrical angle. The ratio is an inverse ratio of the mechanical angle or an inverse ratio of the rotational speed, and can be performed based on a comparison of the rotational speed. In this case, it may be determined whether or not the rotational speed of the first rotating electrical machine 12 is six times the rotational speed of the second rotating electrical machine 14. The same configuration of the rotating electrical machine means that the number of poles is the same.

It is a figure which shows the structure of the rotary electric machine control system mounted in the vehicle in embodiment which concerns on this invention. In embodiment which concerns on this invention, it is a flowchart which shows the procedure which suppresses the influence regarding an electrical sixth order. In embodiment which concerns on this invention, it is a figure explaining the influence regarding the electrical 6th order. It is a figure explaining a mode that the influence of the electrical 6th order is suppressed by the procedure of FIG. In embodiment which concerns on this invention, it is a flowchart explaining the other procedure which suppresses the influence of the electrical 6th order.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Rotating electrical machine control system, 12, 14 Rotating electrical machine, 20 Power storage device, 22, 26 Smoothing capacitor, 24 Voltage converter, 28, 30 Inverter, 50 MG1 control unit, 52, 62 Switching control module, 60 MG2 control unit, 64 Electric 6th order judgment module, 66 gain change module, 68 carrier f change module, 70, 76 fluctuation waveform, 72, 78 control waveform, 74 waveform.

Claims (3)

A first rotating electrical machine connected to the first inverter;
A second rotating electrical machine connected to the second inverter;
A control unit for controlling the operation of the first inverter and the second inverter;
With
The control unit
The electrical cycle of the second rotating electrical machine is compared with the electrical cycle of the first rotating electrical machine, and it is determined whether the electrical cycle of the second rotating electrical machine is six times the electrical cycle of the first rotating electrical machine. An electrical cycle determination means;
Control mode determining means for determining whether or not the control mode of the first rotating electrical machine is a rectangular wave control mode;
Changing means for changing the control frequency of the second inverter based on the judgment of the electric one cycle judging means and the judgment of the control mode judging means;
A rotating electrical machine control system comprising: In the rotating electrical machine control system according to claim 1,
Change means
A rotating electrical machine control system, wherein a control gain of a second inverter is changed. In the rotating electrical machine control system according to claim 1,
further,
Provided with means for changing the carrier frequency used for the control of the second inverter to the low frequency side within the control range of the second rotating electrical machine based on the judgment of the electrical single cycle judgment means and the judgment of the control mode judgment means. A rotating electrical machine control system.

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