JP2017103918A - Control device for rotary electric machine and control method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a control device for a rotary electric machine which performs battery protection by the maximum input/output possible electric power of a battery and also protects the rotary electric machine and an inverter.SOLUTION: A control method comprises the steps of performing driving power generation control with an inverter circuit between a battery and the rotary electric machine, generating a torque limit value according to a maximum electric power value that can be inputted and outputted from the battery, a rotational speed of the rotary electric machine, and the temperature of the rotary electric machine and the control device, obtaining a torque selection command value by comparing the torque limit value and the torque command value, generating a current command generation value from the torque selection command value to the rotating electric machine, obtaining a phase current value flowing in each phase of the rotary electric machine, generating a voltage command generation value according to a deviation between the current command generation value and the phase current value, generating each phase PWM gate signal of the switching element section of the inverter circuit according to the voltage command generation value, when generating the torque limit value, obtaining the rotary electrical machine loss generated in the rotary electric machine, obtaining inverter loss generated by the control device, and generating a torque limit value according to each obtained loss.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a control device for a rotating electrical machine and a control method therefor, and particularly to protection of the rotating electrical machine and the control device.

Hereinafter, the rotating electrical machine may be referred to as a motor, and the control device may be referred to as an inverter.
Conventionally, a battery is used as a DC power source for driving the motor. However, if the motor is continuously driven, the driving power of the motor is taken out from the battery, and the battery is overdischarged. Conversely, if the motor continues to operate as a generator, it will be overcharged by continuing to charge the battery. When overdischarge and overcharge occur, the performance of the battery is greatly reduced. Therefore, measures have been proposed to prevent the battery from being overdischarged and overcharged.

  In the following Patent Document 1, the battery input / output maximum power and the drive power required for driving the motor are calculated, and the torque command is limited so that the drive power does not exceed the battery input / output maximum power. By calculating the maximum power that can be input and output from the battery using the power change rate and the motor speed change rate, the battery overdischarge and Techniques for preventing overcharge have been proposed.

JP 2010-41741 A

  However, according to the technique disclosed in Patent Document 1, the torque command is limited only by the maximum power that can be input / output from the battery, and the torque command cannot be limited according to the state of the motor and the inverter. There was a problem that the torque command restriction in consideration was not possible.

  In view of the above-described problems, an object of the present invention is to provide a control device for a rotating electrical machine that can appropriately protect a rotating electrical machine and an inverter while appropriately protecting the battery with the maximum power that can be input / output to the battery, and the control thereof. It is to provide a method.

  The present invention is a control device for a rotating electrical machine that performs drive power generation control between the battery and the rotating electrical machine by an inverter circuit of the rotating electrical machine, and is a maximum power value that can be input / output from the battery while monitoring the state of the battery A battery control unit for calculating the power, a control unit for performing drive power generation control of the rotating electrical machine, and a switching element unit that constitutes the inverter circuit between the battery and the rotating electrical machine, and the switching unit is turned on and off by the control unit And the control unit generates a torque limit value in accordance with a maximum power value that can be input and output from the battery, a rotation speed of the rotating electrical machine, and temperatures of the rotating electrical machine and the control device. And torque command selection that compares the torque limit value output from the torque limiter with the torque command value and outputs a torque selection command value A current command generation unit that generates a current command generation value to the rotating electrical machine from a torque selection command value of the torque command selection unit, a phase current acquisition unit that acquires a phase current value flowing in each phase of the rotating electrical machine, A voltage command generation unit that generates a voltage command generation value according to a deviation between the current command generation value and the phase current value, and each phase PWM gate signal of the switching element unit according to the voltage command generation value of the voltage command generation unit A PWM signal generating unit that generates a rotating electrical machine loss calculating unit that calculates a rotating electrical machine loss generated by the rotating electrical machine, and an inverter loss calculating unit that calculates an inverter loss generated by the control device. And the torque limit value is generated according to each calculated loss.

  According to the present invention, it is possible to provide a control device for a rotating electrical machine, a control method thereof, and the like that can appropriately protect a rotating electrical machine and an inverter while appropriately protecting the battery with the maximum power that can be input / output from the battery.

It is a figure which shows the structure of an example of the system provided with the control apparatus of the rotary electric machine which concerns on Embodiment 1 of this invention. It is a figure which shows an example of a structure of the torque limitation selection part of FIG. It is a figure which shows an example of a structure of the part of the PWM signal generation part of FIG. 1, a switching element part, and a motor.

  In the control apparatus for a rotating electrical machine according to the present invention, the input / output power limit value of the battery, the motor temperature and the inverter temperature, the motor loss and the inverter loss are used as the control information for performing the torque limit. Thereby, it is possible to appropriately protect the motor and the inverter while appropriately protecting the battery.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a control device for a rotating electrical machine according to the present invention will be described with reference to the drawings according to each embodiment. In each embodiment, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

Embodiment 1 FIG.
1 is a diagram showing an example of the configuration of a system including a control device for a rotating electrical machine according to Embodiment 1 of the present invention. In FIG. 1, a motor 1 which is a rotating electrical machine generates drive torque as an electric motor and generates power as a generator. The motor 1 includes a plurality of armature windings and a plurality of magnetic pole pairs. A position sensor 2 for detecting the rotor position is attached to the motor 1. There are no particular restrictions on the type and number of position sensors 2.

  When the motor 1 is a three-phase AC motor, the armature includes three windings of a U phase, a V phase, and a W phase. In this embodiment, the motor 1 has three armature windings, but the number of windings of the motor 1 is not particularly limited. Moreover, although the connection of the motor 1 is assumed to be a Y connection, there is no particular limitation on the type of connection, and a Δ connection may be used.

  The DC power supply 3 is arranged to drive the motor 1 and supplies a DC voltage to an inverter circuit shown as the control unit 5 and the switching element unit 12 in FIG. As the DC power source 3, for example, a battery can be used.

  The battery control unit 4 not only controls the input / output power of the battery 3 according to the state of charge (SOC) of the battery 3 and the battery temperature, but also controls the input / output maximum power value of the battery 3. 5 to prevent overdischarge and overcharge of the battery 3 caused by driving the motor 1.

The inverter 100 includes an inverter circuit shown as the control unit 5 and the switching element unit 12.
A control unit 5 that performs drive power generation control including power running and regeneration of the motor 1 that is a rotating electrical machine includes a torque limiting unit 6, a torque command selection unit 7, a current command generation unit 8, a phase current acquisition unit 9, and a voltage command generation. Unit 10 and PWM signal generation unit 11.
The torque limiter 6 outputs a torque limit value TL from each detection value detected by each unit and input to the control unit 5. Details will be described later. Each of the following values indicates a signal indicating that value is input / output.
The torque command selection unit 7 compares the torque command value TC input to the control unit 5 with the torque limit value TL output from the torque limit unit 6 and selects the torque selection command value TSC that is the minimum value.
The current command generation unit 8 generates a current command generation value ICG from the torque selection command value TSC subjected to torque limitation.
The phase current acquisition unit 9 acquires from the current sensor 13 a phase current value IP that flows in each of the U, V, and W phases of the motor 1.
The voltage command generation unit 10 including the subtractor 10a obtains a deviation DE between the current command generation value ICG from the current command generation unit 8 and the phase current value IP from the current command generation unit 8 by the subtractor 10a, and according to the deviation DE. A voltage command generation value VCG is generated.
A PWM (Pulse Width Modulation) signal generation unit 11 generates a PWM gate signal PWM corresponding to the voltage command generation value VCG.

  The torque command selection unit 7 compares the torque command value TC input to the control unit 5 with the torque limit value TL of the torque limit unit 6 and selects the smaller torque value. Thus, a torque selection command value TSC that takes into account the maximum input / output power value BIOMP of the battery 3 and the protection of the motor 1 and the inverter 100 is generated.

The current command generation unit 8 converts the torque selection command value TSC output from the torque command selection unit 7 into a current command generation value ICG, and sends the converted current command generation value ICG to the subtracter 10 a of the voltage command generation unit 10. input. The current command generation value ICG outputs a d-axis current command value and a q-axis current command value.
In this embodiment, the control command input to the control unit 5 is the torque command value TC, but the current command value IC may be input to the current command generation unit 8. At this time, the torque command selection unit 7 does not perform the limit process, and the current command generation unit 8 compares the current command value IC with the current limit value IL calculated from the torque limit value TL from the torque limit unit 6, Select the smaller value.

The phase current acquisition unit 9 acquires currents passed through the phases of the motor 1 with the current sensor 13. In this embodiment, the current obtained by dq conversion by the dq conversion unit 9a after obtaining each phase current from each current sensor 13 is used, and the dq converted phase current value IP_DQ and the current command generation value ICG of the current command generation unit 8 are Are compared by the subtractor 10a. The dq converter 9a calculates the dq-axis current using the following formulas (1) and (2) using the current value of each phase.
Id = √ (2/3) × {IP_U × cos (R_DEG) + IP_V × cos (R_DEG−2π / 3) + IP_W × cos (R_DEG−4π / 3)} (1)
Iq = √ (2/3) × {−IP_U × cos (R_DEG) −IP_V × cos (R_DEG−2π / 3) −IP_W × cos (R_DEG−4π / 3)} (2)

  The voltage command generation unit 10 performs proportional-integral control so that the deviation between the current command generation value ICG, which is the output value of the current command generation unit 8, and the phase current value IP_DQ, which is the output of the phase current acquisition unit 9, becomes zero. The phase voltage command generation value VCG is calculated. Thus, the voltage command generator 10 calculates each phase voltage command generation value VCG by current feedback control.

Although not shown in detail, the DC voltage VBAT of the battery 3 is applied to an inverter circuit shown as the switching element unit 12 and is stepped down to serve as a power source for the control unit 5. A DC voltage value Vbat indicating the DC voltage VBAT of the battery 3 is input to the torque limiter 6 and the PWM signal generator 11 of the controller 5.
In this embodiment, as the power source of the control unit 5, a voltage obtained by stepping down the voltage of the battery 3 is used. However, a power source configuration in which a low voltage battery for driving the control unit 5 is provided separately from the battery 3 may be used.

  The PWM signal generation unit 11 calculates a ratio of each phase voltage command generation value VCG and the DC voltage value Vbat of the DC voltage VBAT applied to the inverter circuit indicated as the switching element unit 12 by the battery 3 to obtain the PWM gate signal. Generate PWM. A ratio between each phase voltage command generation value VCG and the DC voltage VBAT is defined as a duty ratio.

  In the switching element unit 12, the switching element is driven to open and close based on the PWM gate signal PWM that is the output of the PWM signal generation unit 11. The specific configuration and operation of the switching element unit 12 will be described later.

Here, the operation of the torque limiting unit 6 will be described in detail with reference to FIG.
FIG. 2 is a diagram showing an example of the configuration of the torque limit selection unit of FIG. The torque limiter 6 includes a motor loss calculator 14, an inverter loss calculator 15, and a torque limit selector 16.

  The motor loss calculation unit 14, which is a rotating electrical machine loss calculation unit, includes a motor loss calculation unit 17, a copper loss calculation unit 18, a mechanical loss calculation unit 19, and an iron loss calculation unit 20. In this embodiment, the motor loss MLO, which is a rotating electrical machine loss, is calculated by being divided into a copper loss CLO, a mechanical loss MALO, and an iron loss ILO. However, the motor loss calculation unit 17 alone may be used. . By dividing the loss and calculating, the temperature protection of the motor 1 can be performed more appropriately.

The motor loss MLO calculated by the motor loss calculation unit 17 is obtained by, for example, a motor prepared in advance from the motor rotation speed MR, the torque selection command value TSC, and the DC voltage value Vbat indicating the DC voltage VBAT applied to the inverter circuit in the calculation unit 17b. It calculates using the efficiency map 17a and following formula (3).
Motor loss (MLO) = {(1− (motor efficiency (MOE))) × (motor rotational speed (MR) × 60 ÷ 2π × torque selection command value (TSC))} ÷ (motor efficiency (MOE)) (3 )
Here, the motor efficiency MOE is obtained according to the motor efficiency map 17a from the motor rotational speed MR, the torque selection command value TSC, and the DC voltage value Vbat applied to the inverter 100.

  The copper loss CLO calculated by the copper loss calculation unit 18 is a loss generated by the resistance component of the armature winding of the motor 1 and is calculated using the following equation (4). In this embodiment, the calculation is performed on the assumption that the armature winding resistance value of each phase does not vary and the same loss occurs in each phase. The armature winding resistance value is stored in advance in a memory. However, the sum of the armature winding resistance value RW1 of each phase and the effective current value IPE of each phase and the copper loss of each phase may be obtained.

Copper loss (CLO) = (number of phases (N)) × {(armature winding resistance value (RW1)) × (phase current effective average value (IPEM)) × (phase current effective average value (IPEM))} ( 4)
Here, the phase current effective value (IPE) is obtained from the phase current detected by the phase current effective value calculation unit 9b of the phase current acquisition unit 9, for example. Alternatively, the phase current effective value calculation unit 9 b may be provided in the motor loss calculation unit 17.
Further, the control unit 5 is constituted by a processor including a CPU, a memory, and an input / output interface, for example. A program for each processing function shown as a functional block in each figure is stored in the memory together with data used in the processing, and each program is executed by the CPU. The map is stored in advance in the memory.
Alternatively, when the control unit 5 is configured by a digital circuit, the map is configured as a part of the digital circuit.

  The mechanical loss MALO calculated by the mechanical loss calculation unit 19 is a mechanical loss generated when the motor 1 is rotated, and includes a wind loss and a bearing loss. In this embodiment, the mechanical loss is calculated from the motor rotational speed MR according to the map stored in the memory in advance. Similarly, the mechanical loss is calculated by the calculation formula using the approximate curve of the mechanical loss stored in the memory in advance. May be.

  The iron loss ILO calculated by the iron loss calculation unit 20 is a loss caused by the physical properties of the material constituting the motor 1, and is calculated using the following formula (5) in this embodiment.

  Iron loss (ILO) = (Motor loss (MLO: Loss power of motor 1))-(Copper loss (CLO))-(Mechanical loss (MALO)) (5)

The inverter loss INLO calculated by the inverter loss calculation unit 15 is a loss generated when the switching element unit 12 is turned on / off, and will be described with reference to FIG.
FIG. 3 is a diagram showing an example of the configuration of the portions of the PWM signal generating unit 11 and the switching element unit 12 shown in FIG. FIG. 3 shows a specific connection diagram of the inverter circuit including the switching element unit 12. Three half-bridge circuits each having a switching element on each of the high potential side and the low potential side are connected in parallel. Specifically, it has a high potential side switching element composed of switching elements Sup, Svp and Swp and a low potential side switching element composed of switching elements Sun, Svn and Swn. The DC voltage VBAT of the battery 3 is applied to a circuit in which three half bridge circuits are connected in parallel.

  A connection point connecting the pair of switching elements Sup and Sun is connected to one end of the U-phase winding. A connection point connecting the pair of switching elements Svp and Svn is connected to one end of the V-phase winding. Furthermore, the connection point of the pair of switching elements Swp and Swn is connected to one end of the W-phase winding.

  Signals Sup_g, Sun_g, Svp_g, Svn_g, Swp_g, Swn_g, which are PWM gate signals PWM of the PWM signal generation unit 11, are input to the gate inputs of the switching elements Sup, Sun, Svp, Svn, Swp, Swn, and the ON signal. The motor 1 is controlled by controlling the voltage applied to each phase terminal of the motor 1 by the time ratio between the ON signal and the OFF signal, or the ON / OFF cycle and the ON signal time ratio.

The inverter loss INLO calculated by the inverter loss calculator 15 is
A switching loss SLO that occurs when the high-potential side switching element and the low-potential side switching element are turned ON / OFF,
Conduction loss COLO caused by ON resistance of the switching element,
Diode loss DLO generated by passing a current flowing through the diode D during a dead time period to prevent the switching element from being vertically short-circuited
Consists of In this embodiment, for example, the calculation is performed by the calculation unit 15b of the inverter loss calculation unit 15 using the following equation (6).

Inverter loss (INLO) =
(DC voltage value applied to inverter 100 (Vbat)) × (DC current (IDC) energized to inverter 100) × (1-inverter efficiency (INE)) (6)

  For the direct current (IDC) that is passed through the inverter 100, a current sensor 24 may be provided between the battery 3 and the inverter 100 to obtain a DC current value (IDC), or a DC current may be estimated. At this time, the DC current value is calculated using the following formula (7), assuming that the input power to the inverter 100 is equal to the power output from the inverter 100.

(DC current IDC) = (voltage command generation value VCG) × (phase current effective value IPE) ÷
(Battery DC voltage value Vbat) (7)

  Here, the inverter efficiency INE may be obtained according to the inverter efficiency map 15a from the motor rotational speed MR, the torque selection command value TSC, and the DC voltage value Vbat indicating the DC voltage VBAT applied to the inverter 100. Alternatively, each loss may be calculated by a calculation formula, and the inverter loss (INLO) may be calculated as a sum of the losses.

The torque limit selection unit 16
Torque limit processing by motor temperature MT,
Torque limit processing by inverter temperature IT and torque limit processing by battery I / O maximum power BIOMP,
The minimum torque value in each torque limiting process is output to the torque command selector 7 as the torque limit value TL.

  In the torque limiting process based on the motor temperature MT and the inverter temperature IT, the torque limit value TL is calculated based on the torque limit value map from the motor temperature MT and the inverter temperature IT.

The torque limiting process based on the battery input / output maximum power value BIOMP has a different calculation formula depending on whether the output torque is positive or negative.
If the output torque is positive, it is determined that the motor 1 is powering, so the input is battery power and the output is the machine output of the motor 1. Thus, the torque limit based on the battery input / output maximum power value BIOMP is calculated using the following equation (8).

  Power running torque limit value = {(battery input / output maximum power value (BIOMP)) − (motor loss (MLO)) − (inverter loss (INLO))} ÷ (motor rotational speed (MR) × 2π ÷ 60) (8 )

  On the other hand, if the output torque is negative, it is determined that the motor 1 is generating power, and the input / output relationship is opposite to that during power running. Calculated using (9).

  Power generation torque limit value = {((maximum battery input / output power (BIOMP)) + (motor loss (MLO)) + (inverter loss (INLO))} ÷ (motor speed (MR) × 2π ÷ 60) ( 9)

Torque limit value due to motor temperature MT,
Torque limit value by inverter temperature IT,
When the torque limit value based on the battery input / output maximum power BIOMP is obtained, the absolute values of the three torque limit values are acquired and the torque command value that is the minimum is selected.

  As described above, according to the first embodiment, the motor 1, the inverter (5, 12), and the battery are limited by applying the torque limit by the battery input / output maximum power while applying the torque limit by the motor temperature MT and the inverter overheat protection. 3 can be appropriately protected.

  In this embodiment, the copper loss calculation unit 18 obtains the copper loss based on the armature winding resistance value RW1 and the phase current effective average value IPEM. Therefore, the armature winding temperature acquisition unit 23 is provided in the motor loss calculation unit 14, and the armature winding temperature TW1 is detected and acquired by providing, for example, a temperature detector that is estimated or omitted from the motor temperature MT. If the copper loss calculation unit 18 calculates the copper loss using the armature winding resistance value RW1 corresponding to the armature winding temperature TW1, the change in the winding resistance value due to the temperature can be reflected. More accurate copper loss can be calculated.

  When the armature winding temperature TW1 exceeds the set threshold value and becomes abnormal, the armature winding temperature acquisition unit 23 outputs the armature winding temperature maximum value TW1M under the usage environment. The copper loss calculating unit 18 calculates the copper loss according to the armature winding resistance value RW1 corresponding to the armature winding temperature maximum value TW1M, so that the maximum copper loss can be obtained even when the winding temperature TW1 becomes abnormal. As a result, the motor temperature protection function can be continued.

  In this embodiment, the motor 1 is a synchronous rotating electric machine with a magnet, for example. However, a field winding synchronous rotating electric machine in which an electric current is passed through a coil instead of a magnet to be an electromagnet can be applied. In this case, by adding a field winding loss calculation unit 21 that calculates the field winding loss FWLO to the motor loss calculation unit 14, the present technology can be applied to a field winding type synchronous rotating electrical machine.

  Further, by providing the motor loss calculating unit 14 with a field winding temperature acquisition unit 22 that detects or estimates the field winding temperature TW2 of the field winding type rotating electrical machine, the field winding loss calculation is performed. The unit 21 calculates the field winding loss according to the field winding temperature TW2 of the field winding temperature acquisition unit 22. For this reason, it becomes possible to calculate a more accurate field winding loss and thus a motor loss.

  The field winding temperature acquisition unit 22 also outputs the field winding temperature maximum value TW2M under the usage environment when the field winding temperature TW2 exceeds the set threshold and becomes abnormal. The field winding loss calculation unit 21 calculates the field winding loss according to the maximum field winding temperature value TW2M, thereby continuing the motor temperature protection function even if the winding temperature becomes abnormal. Is possible.

  The present invention is not limited to the specific examples described above, but includes all possible combinations of these specific examples.

1 motor (rotary electric machine), 2 position sensor, 3 battery (DC power supply),
4 battery control unit, 5 control unit, 6 torque limiting unit,
7 torque command selector, 8 current command generator,
9 phase current acquisition unit, 9a dq conversion unit, 9b phase current effective value calculation unit,
10 voltage command generator, 10a subtractor, 11 signal generator,
12 switching element part, 13 current sensor, 14 motor loss calculation part,
15 inverter loss calculation unit, 15a inverter efficiency map, 15b calculation unit,
16 torque limit selection unit, 17 motor loss calculation unit, 17a motor efficiency map, 17b calculation unit, 18 copper loss calculation unit, 19 mechanical loss calculation unit, 20 iron loss calculation unit,
21 field winding loss calculation unit, 22 field winding temperature acquisition unit, 23 armature winding temperature acquisition unit,
24 current sensor, 100 inverter (control device),
BIMP Battery input / output maximum power value,
CLO copper loss, COLO conduction loss, D diode, DE deviation, DLO diode loss, IC current command value, ICG current command generation value, IDC DC current,
IL current limit value, ILO iron loss, INE inverter efficiency, INLO inverter loss,
IP_U U phase current value, IP_V V phase current value, IP_W W phase current value,
IP_DQ dq axis phase current value, IT inverter temperature, MALO mechanical loss,
MLO motor loss, MOE motor efficiency, MR motor speed, MT motor temperature,
IPE phase current effective value, IPEM phase current effective average value, PWM PWM gate signal,
RW1 Armature winding resistance value, SLO switching loss,
Sup, Sun, Svp, Svn, Swp, Swn switching elements,
T torque value, TC torque command value, TL torque limit value, TSC torque selection command value,
TW1 armature winding temperature, TW1M armature winding temperature maximum value, TW2 field winding temperature,
TW2M Field winding temperature maximum value, VBAT DC voltage, Vbat DC voltage value,
VCG Voltage command generation value.

Claims (7)

A control device for a rotating electrical machine that performs drive power generation control by an inverter circuit of the rotating electrical machine between a battery and the rotating electrical machine,
A battery control unit that outputs the maximum power value that can be input and output from the battery while monitoring the state of the battery;
A control unit that performs drive power generation control of the rotating electrical machine;
Constituting the inverter circuit between the battery and the rotating electrical machine, a switching element portion on which the switching element is turned on and off by the control unit;
With
The controller is
A torque limiter that generates a torque limit value according to the maximum power value that can be input and output from the battery, the rotational speed of the rotating electrical machine, and the temperature of the rotating electrical machine and the control device;
A torque command selector that compares the torque limit value output from the torque limiter with the torque command value and outputs a torque selection command value;
A current command generation unit that generates a current command generation value to the rotating electrical machine from a torque selection command value of the torque command selection unit;
A phase current acquisition unit for acquiring a phase current value flowing in each phase of the rotating electrical machine;
A voltage command generation unit that generates a voltage command generation value according to a deviation between the current command generation value and the phase current value;
A PWM signal generation unit that generates each phase PWM gate signal of the switching element unit according to a voltage command generation value of the voltage command generation unit;
With
The torque limiter is
A rotating electrical machine loss calculating section for obtaining a rotating electrical machine loss generated in the rotating electrical machine;
An inverter loss calculation unit for obtaining an inverter loss generated in the control device;
And the torque limit value is generated according to each calculated loss.
Control device for rotating electrical machines. The rotating electrical machine loss calculation unit
A copper loss calculation unit, an iron loss calculation unit, a mechanical loss calculation unit, an armature winding temperature acquisition unit that detects and estimates an armature winding temperature of the rotating electrical machine, and
With
The copper loss calculation unit calculates copper loss according to the armature winding temperature of the armature winding temperature acquisition unit,
The control device for a rotating electrical machine according to claim 1.   The armature winding temperature acquisition unit outputs an armature winding temperature maximum value in a use environment when the armature winding temperature exceeds a set threshold and becomes abnormal. The control apparatus of the rotary electric machine described. The rotating electrical machine is a field winding type rotating electrical machine using an electromagnet, and the rotating electrical machine loss calculating unit is
A copper loss calculator,
An iron loss calculator;
A mechanical loss calculator;
A field winding loss calculation unit;
The control apparatus of the rotary electric machine of Claim 1 provided with. The rotating electrical machine loss calculation unit
A field winding temperature acquisition unit for detecting or estimating the field winding temperature of the field winding type rotating electrical machine;
The control device for a rotating electrical machine according to claim 4, wherein the field winding loss calculation unit calculates a field winding loss according to a field winding temperature of the field winding temperature acquisition unit.   The field winding temperature acquisition unit, when the field winding temperature exceeds a set threshold and becomes abnormal, outputs a field winding temperature maximum value in a use environment. The control apparatus of the rotary electric machine described. A control method for a rotating electrical machine that performs drive power generation control by an inverter circuit of the rotating electrical machine between a battery and the rotating electrical machine,
A torque limit value is generated according to the maximum power value that can be input and output from the battery, the rotational speed of the rotating electrical machine, and the temperature of the rotating electrical machine and the control device,
A torque selection command value is obtained by comparing the torque limit value and the torque command value,
Generate a current command generation value to the rotating electrical machine from the torque selection command value,
Obtain a phase current value flowing in each phase of the rotating electrical machine,
Generate a voltage command generation value according to the deviation between the current command generation value and the phase current value,
Generate each phase PWM gate signal of the switching element part of the inverter circuit of the rotating electrical machine according to the voltage command generation value,
When generating the torque limit value, determine the rotating electrical machine loss generated in the rotating electrical machine, determine the inverter loss generated in the control device, and generate the torque limit value according to each determined loss,
A method for controlling a rotating electrical machine.

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