JP2006340599A - Control unit of rotary electric machine for vehicles - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the control unit of rotary electric machine for vehicles which can prevent damages to circuit elements and each device, by suppressing a rise of voltage in a generator against disconnection of a battery. <P>SOLUTION: The rotary electric machine 11, connected to a internal combustion engine, functions as an electric motor and generator, a DC power source 13 supplying electric power to the rotary electric machine 11 to be charged with its output, and a control means 16 for controlling the rotary electric machine 11 are provided. The control means 16 includes a command value arithmetic means 1 for giving a generation power command to the rotary electric machine 11; a power converter 4 operating as an inverter, when electric power is supplied to the rotary electric machine 11 and operating as a rectifier, when the DC power source 13 is charged from the rotary electric machine 11; and an overvoltage deciding means 18 for deciding the overvoltage in the output circuit of the rotary electric machine 11. When the overvoltage is decided in the overvoltage decision means 18, the command value arithmetic means 1 controls the power converter 4, so as to place the rotary electric machine 11 in a mutually short-circuited condition. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a control device for a rotating electrical machine mounted on a vehicle and used as an AC generator and an AC motor.

  For the purpose of space saving and cost reduction around the internal combustion engine for vehicles, a technique for utilizing an AC generator mounted on the vehicle as an electric motor for starting the internal combustion engine has been proposed. For example, in Patent Document 1, when a claw-pole type three-phase AC generator is used as an electric motor, an applied voltage is calculated based on a torque current command value in order to obtain sufficient torque, and the applied voltage is saturated. A technology is disclosed in which an excitation current having a phase different from that of the torque current command value is generated to change the applied voltage, and the excitation current is corrected so that the actual torque current fed back matches the torque current command value. ing.

  In a system that uses a vehicular generator as an electric motor as an example of this publication, unlike a motor control system used in an electric vehicle, miniaturization and weight reduction of components are regarded as important. Is common. For example, a smoothing capacitor that suppresses voltage changes cannot be used with a large capacity due to the miniaturization of the device, and as a result, the power that can be received as a control device becomes smaller and the amount of voltage change due to trouble becomes larger. Overvoltage was applied to the circuit, which could lead to deterioration and failure of parts.

  FIG. 11 shows an example of the configuration of such a conventional control device for a vehicular rotating electrical machine. In FIG. 11, command value calculation means 1 calculates a torque command value at the time of starting or accelerating the internal combustion engine, and calculates and outputs a command value of generated power when the rotating electrical machine 11 functions as a generator. The calculating means 2 calculates an AC current command value based on the torque command from the command value calculating means 1 or the generated power command. The AC voltage command calculation means 3 calculates the necessary AC voltage based on the command value of the AC current command calculation means 2, and the power conversion device 4 converts the DC power from the DC power supply 13 into an inverter when the rotating electrical machine 11 functions as an electric motor. When the rotating electrical machine 11 functions as a generator, the AC power is converted into DC power as a rectifier.

  The field current command calculating means 5 calculates a field current required for the field coil of the rotating electrical machine 11 based on the command of the command value calculating means 1, and the field voltage command calculating means 6 is based on the field current command value. The field voltage is calculated, and the field current control means 7 generates a field voltage based on the field voltage command and controls the field current applied to the field coil of the rotating electrical machine 11. The voltage smoothing device 8 suppresses fluctuations in the DC voltage converted by the power conversion device 4, the voltage detector 9 detects the voltage of the DC power supply 13, and the rotation speed / rotation angle calculation means 10 is provided in the rotating electrical machine 11. Based on the output of the rotation detector 12, the rotation angle and the rotation speed are calculated. Reference numerals 14 and 15 denote connectors for connecting the control device and the DC power source 13.

At the start of the internal combustion engine, the rotating electrical machine 11 functions as an electric motor, the alternating current command calculating means 2 calculates the supply current based on the torque command value of the command value calculating means 1, and the supply voltage corresponding to this current value is calculated as the AC voltage command. The means 3 calculates and PWM-controls the switching element of the power conversion device 4 to start the internal combustion engine with the rotating electrical machine 11 as a three-phase synchronous motor. After the internal combustion engine is started, the rotating electrical machine 11 functions as a three-phase AC generator. However, the voltage detector 9 feeds back the voltage of the DC power source 13 to the command value calculation means 1 so that the command value calculation means 1 is AC. A command is given to the current command calculation means 2 and the field current command calculation means 5, and the power generation amount is controlled so that the voltage of the DC power supply 13 becomes a predetermined value with respect to the discharge amount (load amount) of the DC power supply 13. .
JP 2000-116170 A

  In the conventional control device for a rotating electrical machine for a vehicle having the above configuration, when the rotating electrical machine functions as a generator, the connector for connecting the control device and the DC power source is disconnected or inserted between the connectors due to the vibration of the vehicle. When a circuit breaker (not shown) is released, a rapid voltage increase occurs in the charging path of the control circuit. In response to this voltage increase, the command value calculation means operates to give a command value to the AC current command calculation means and the field current command calculation means 5 so as to decrease the generated voltage. In this case, control cannot catch up, and a large overvoltage occurs.

  In addition, this overvoltage should be absorbed by the voltage smoothing device, but as described above, the voltage smoothing device cannot be absorbed because the capacity is reduced, and the overvoltage is used in the control device. It was applied to each device connected as a load of a DC power supply, and it led to troubles such as deterioration and breakage.

  The present invention has been made to solve such a problem, and suppresses the voltage rise value for the above trouble and reduces the voltage rise time, thereby deteriorating the circuit element and each device. An object of the present invention is to obtain a control device for a rotating electrical machine for a vehicle that can prevent damage to the vehicle.

A control device for a rotating electrical machine for a vehicle according to the present invention includes a rotating electrical machine that is coupled to an internal combustion engine and functions as an electric motor or a generator,
When supplying electric power to the rotating electrical machine, further comprising a DC power source charged by the output of the rotating electrical machine, and a control means for controlling the rotating electrical machine, the control means when supplying power to the rotating electrical machine A power converter that operates as an inverter and operates as a rectifier when charging the DC power supply from the rotating electrical machine, and a field current control unit that supplies and controls a field current to a field coil of the rotating electrical machine; And overvoltage determination means for determining an overvoltage of the output circuit of the rotating electrical machine,
When the overvoltage determination means determines that the voltage is overvoltage, the power converter places the rotating electrical machine in a phase short circuit state.

  In the control device for a rotating electrical machine for a vehicle according to the present invention, even when the rotating electrical machine generates power, the charging circuit between the control device and the DC power source is interrupted due to vibration of the vehicle, etc. As a result of the overvoltage determination means detecting this and controlling the rotating electrical machine, the maximum value of the overvoltage can be suppressed and quickly reduced, and the circuit elements used for the control device and the load on the rotating electrical machine are deteriorated by the overvoltage. It is possible to protect against damage and damage.

Embodiment 1 FIG.
1 to 4 illustrate a control apparatus for a rotating electrical machine for a vehicle according to Embodiment 1 of the present invention. FIG. 1 is a block diagram showing the configuration of the apparatus, and FIGS. 2 to 4 illustrate the operation. In FIG. 1, the same reference numerals are given to the same functional parts as those in the conventional example.

  In FIG. 1, a rotating electrical machine 11 is connected to an internal combustion engine directly or via a drive means, and drives the internal combustion engine as an electric motor when starting the internal combustion engine, and functions as a generator after starting the internal combustion engine. The rotation detector 12 detects the rotation speed and the rotation angle of the rotating electrical machine 11. The DC power supply 13 supplies power to the rotating electrical machine 11 when the internal combustion engine is started, and is charged by the output of the rotating electrical machine 11 during operation of the internal combustion engine, and supplies power to each load mounted on the vehicle. It is.

  The control means 16 controls the torque when the rotating electrical machine 11 functions as an electric motor, and controls the power generation output when functioning as a generator, and comprises the following means. First, the command value calculation means 1 calculates the torque command value of the rotating electrical machine 11 and outputs the command value when starting the internal combustion engine, and inputs the voltage of the DC power supply 13 when the rotating electrical machine 11 functions as a generator. The generated electric power of the rotating electrical machine 11 is calculated and output as a command value. The alternating current command calculating means 2 calculates the command value of the alternating current to be supplied to the armature coil of the rotating electrical machine 11 based on the torque command value and the generated power command value from the command value calculating means 1, and the current command value of each phase Are output as Iu *, Iv *, and Iw *.

  The AC voltage command calculating means 3 calculates the necessary AC voltage of each phase for obtaining the current based on the current command value of the AC current command calculating means 2 to obtain the voltage command value as Vu *, Vv *, Vw. The power conversion device 4 performs PWM control based on a voltage command value as an inverter, and performs energization control of three-phase alternating current on the armature coil of the rotating electrical machine 11 as an inverter. Further, when the rotating electrical machine 11 functions as a generator, the power conversion device 4 rectifies the three-phase AC output of the rotating electrical machine 11 as a rectifier and charges the DC power supply 13. The current detector 17 detects the actual current of each phase of the rotating electrical machine 11 and feeds it back to the AC current command calculation means 2 so that the AC current command calculation means 2 controls the actual current to match the current command value.

  Based on the output command value of the command value calculation means 1, the field current command calculation means 5 calculates the field current value for obtaining the torque as the motor or the field current value for obtaining the necessary generated power. The field current command value If * is given to the field voltage command calculation means 6, and the field voltage command calculation means 6 obtains a field current command value Vf * for obtaining a field current based on the field current command value. Is calculated and applied to the field current control means 7. The field current control means 7 receives power from the DC power supply 13, controls the field current based on the field voltage command value Vf *, and supplies it to the field coil of the rotating electrical machine 11.

  The voltage smoothing device 8 suppresses fluctuations in the DC voltage converted by the power converter 4, particularly transient voltage fluctuations caused by the PWM control switching operation, and the voltage detector 9 detects the voltage of the DC power supply 13. Then, it is given to the command value calculation means 1, and the generated power command value of the rotating electrical machine 11 is calculated as described above. The rotation speed / rotation angle calculation means 10 calculates the rotation angle θ and the rotation speed Nm of the rotating electrical machine 11 from the output of the rotation detector 12 and gives the rotation speed Nm to the command value calculation means 1. The supplied current is supplied to the alternating current command calculating means 2 and the alternating voltage command calculating means 3 to control the phase of the supplied current. The overvoltage determination means 18 inputs the voltage detected by the voltage detector 9 and determines that it is an overvoltage if the voltage is equal to or greater than a predetermined threshold, and the command value calculation means 1 and the power conversion device 4 as will be described later. And output. Reference numerals 14 and 15 denote connectors for connecting the control means 16 and the DC power source 13.

  During the power generation operation of the rotating electrical machine 11, the DC power supply 13 is charged by the output of the rotating electrical machine 11 and power is supplied to various loads. The command value calculation means 1 commands the generated power so that the voltage detected by the voltage detector 9 becomes the set target voltage, and calculates the command value of the generated power based on the difference between the target voltage and the detected value. Based on this command value, an alternating current command calculation means 2 calculates an alternating current command, and at the same time, a field current command calculation means 5 calculates a field current command value.

  FIG. 2 shows a state of power generation control of the command value calculation means 1 in a steady state. The state shown in the figure shows a state where the load of the DC power source 13 is constant and steady power generation is performed, and the generated power command value changes to a constant value in order to control the voltage detected by the voltage detector 9 within a set range. . Since the load varies in the actual running state, the voltage varies within the set range. As a result of detecting this voltage and outputting the generated power command, the DC voltage is controlled to the target voltage.

  During such control, if an accident occurs in which the charging circuit from the control means 16 to the DC power supply 13 is interrupted due to vehicle vibration or the like, the circuit to the DC power supply 13 that has absorbed the generated power suddenly becomes sudden. Therefore, a sudden voltage rise as shown in the DC voltage characteristic of FIG. 3 occurs in the circuit on the power converter 4 side from the cutoff point, and this voltage rise is partially absorbed by the voltage smoothing device 8. However, since the capacity of the voltage smoothing device 8 is limited, the voltage smoothing device 8 rises to the point A shown in the DC voltage characteristics of FIG. As a result of this voltage increase, feedback is applied from the voltage detector 9 to the command value calculation means 1, and both the generated power command value and the field current command value become 0, whereby the command value of the AC current command calculation means 2 becomes 0. become. However, since the reduction of the field current takes time as shown in the field current characteristics of the figure, this abnormal voltage continues for a relatively long time.

  In response to such a situation, in this embodiment, when the voltage reaches a predetermined threshold value exceeding the upper limit value of the voltage setting range, or when a state exceeding the predetermined threshold value continues for a predetermined time, the overvoltage determination means 18 is overvoltage. The command value calculation means 1 shifts the generated power command value and the field current command value to 0 and also gives the power converter 4 the determination result. And commands the rotating electrical machine 11 to shift to the phase short circuit state. If the power converter 4 uses a three-phase full-bridge PWM converter, turn on all three upper arm switching elements and turn off all three lower arm switching elements, or vice versa. When the three upper arm elements are turned off and the three lower arm elements are turned on, the rotating electrical machine 11 enters a phase short circuit state.

  By operating the power conversion device 4 in this manner, the AC terminal of the rotating electrical machine 11 is equivalent to a state where the AC terminal is short-circuited at one point, and a short-circuit current determined by the rotation speed and the field current is generated. This short circuit current becomes smaller as the field current approaches 0, and is consumed as Joule heat by the armature resistance of the rotating electrical machine, thereby suppressing an abnormal increase in voltage. FIG. 4 shows this characteristic. When the circuit is interrupted at the point o, the overvoltage determination means 18 detects the overvoltage at the point p, sets the generated power command value to 0, and interrupts the field current. In addition, by setting the power conversion device 4 in the phase short circuit state, a short circuit current as shown in the alternating current characteristic of the rotating electrical machine 11 flows, and the direct current voltage rises to the voltage B and then decreases due to the short circuit current. . The voltage at point B is much lower than the voltage at point A in FIG.

  As described above, in the control apparatus for a rotating electrical machine for a vehicle according to Embodiment 1 of the present invention, overvoltage determination means 18 detects that the voltage has exceeded a threshold value and sets the field current to 0, and also converts power. Since the device 4 is controlled to the phase short-circuit state, a short-circuit current determined by the rotation speed and the field current flows between the element of the power conversion device 4 and the rotating electrical machine 11, and the thermal capacity of the element is selected. Although it is necessary to prevent the voltage from increasing at the same time as the operation, the voltage can be quickly lowered, and the overvoltage can be protected. The overvoltage determination by the overvoltage determination means 18 can be performed by hardware or software, and the control device 16 has been described in terms of outputting a command of a three-phase current and a three-phase voltage. The present invention can also be applied to vector control using two-phase conversion or two-phase / three-phase conversion.

Embodiment 2. FIG.
FIG. 5 is a block diagram showing the configuration of a control device for a rotating electrical machine for a vehicle according to Embodiment 2 of the present invention, and FIG. 6 is an operational characteristic diagram for explaining the operation. The control device is different from the first embodiment in the control contents of the control means 16 based on the overvoltage determination result of the overvoltage determination means 18, and the block diagram of FIG. 5 is an overvoltage determination with respect to the block diagram of FIG. The overvoltage determination result by the means 18 is given to the command value calculation means 1 and the alternating current command calculation means 2, and the rest is the same as in FIG. 1.

  When the overvoltage determination means 18 determines overvoltage under the same conditions as in the first embodiment, the determination result is given to the command value calculation means 1 and the AC current command calculation means 2, and the command value calculation means 1 immediately The generated power command and the field current command are shifted to 0, and the alternating current command calculation means 2 outputs a field weakening command. This field weakening current does not contribute to torque generation when the rotating electrical machine 11 is operated as a generator, and the phase of the current that does not contribute to power generation is controlled by the power conversion device 4 so that the armature of the rotating electrical machine 11 is used. It is something to give to.

  As shown in FIG. 6, when the circuit is interrupted at the point o and the overvoltage determination means 18 determines that it is an overvoltage at the point p, the determination result is given to the command value calculation means 1 and the alternating current command calculation means 2. The command value calculation means 1 outputs a command to shift the generated power command value and the field current command value to 0, and the AC current command calculation means 2 outputs the calculated field weakening current to the electric machine of the rotating electric machine 11. Energize the child.

  By controlling in this way, excess generated electric power is consumed as Joule heat of the rotating electrical machine 11, and the output voltage decreases after rising to point C as shown in the DC voltage of FIG. The suppression value and duration of this overvoltage are determined by the amount of field weakening current and the response of the current control. The response to the phase short circuit of the first embodiment is poor, and the voltage at point C is B in FIG. Although it becomes slightly higher than the voltage at the point, the phase short circuit current does not flow as in the case of the first embodiment.

  That is, the control device for a rotating electrical machine for a vehicle according to the second embodiment includes a rotating electrical machine that functions as an electric motor or a generator, a DC power source that supplies power to the rotating electrical machine and is charged by the output of the rotating electrical machine, Control means, AC current command calculation means for giving a current command to the rotating electrical machine, an inverter when supplying power to the rotating electrical machine, and a rectifier when charging a DC power supply from the rotating electrical machine The power converter that operates and the overvoltage determination means that determines the overvoltage of the output circuit of the rotating electrical machine are included. When the overvoltage determination means determines that the voltage is overvoltage, the AC current command calculation means controls the power converter. Since the field-weakened field current is supplied to the armature coil of the rotating electrical machine, the phase-controlled field-weakening current is further supplied to the rotating electrical machine as a generator. Since the current has a phase that does not contribute to the generation of torque when functioning, even if the DC power source is opened during power generation of the rotating electrical machine and an overvoltage state occurs, the voltage is quickly reduced by the field weakening current. Therefore, it is possible to protect the circuit elements used in the control device and the load of the rotating electrical machine from deterioration or damage due to overvoltage.

Embodiment 3 FIG.
FIG. 7 is a block diagram showing the configuration of a control device for a rotating electrical machine for a vehicle according to Embodiment 3 of the present invention, and FIG. 8 is an operational characteristic diagram for explaining the operation. The control device is different from the first and second embodiments in the control content of the control means 16 based on the overvoltage determination result of the overvoltage determination means 18, and the overvoltage determination result by the overvoltage determination means 18 as shown in FIG. Is supplied to the command value calculation means 1 and the field current control means 7, and the field current control means 7 applies a field voltage in the reverse direction to the rotating electrical machine 11.

  When the overvoltage determination means 18 determines an overvoltage in the same manner as in the first embodiment, the overvoltage determination result is given to the command value calculation means 1 and the field current control means 7, and the command value calculation means 1 immediately receives the generated power command. The field current command is shifted to 0, and the field current control means 7 quickly lowers the field magnetic flux by reversing the direction of the field voltage. When the field current control means 7 has a configuration in which the direction of the field voltage cannot be reversed, the decrease in the field current gradually approaches 0 over a time determined by the time constant of the field coil. By adopting a configuration in which the means 7 can reverse the direction of the field voltage, the field magnetic flux can be quickly reduced to zero. FIG. 8 shows the characteristics at this time, in which the generated power command value and the AC current command are shifted to 0, and the field current is quickly set to 0 by reverse excitation, thereby suppressing an increase in DC voltage. .

  By controlling in this way and configuring the field current control means 7 so as to be capable of reverse excitation, the rise of the abnormal voltage can be suppressed to the point D shown in the DC voltage characteristics of FIG. Although it is necessary to configure the control means 7 so that it can be reversely excited, since the generated power is immediately set to 0, it is not necessary to consider the thermal resistance of the power converter 4 and the rotating electrical machine 11 without consuming it as heat. It is.

  That is, the control device for a rotating electrical machine for a vehicle according to the third embodiment includes a rotating electrical machine that functions as an electric motor or a generator, a DC power source that supplies electric power to the rotating electrical machine and is charged by the output of the rotating electrical machine, Electric machine control means, the control means includes a field current control means for controlling the field current of the rotating electric machine, and an overvoltage determination means for judging an overvoltage of the output circuit of the rotating electric machine, When an overvoltage is determined, the field current control means applies a field voltage in the reverse direction to the rotating electrical machine so as to demagnetize the DC power supply during power generation of the rotating electrical machine, causing a sudden increase in voltage. However, after the field of the rotating electrical machine is interrupted, the field current is applied so as to cancel the residual field magnetic flux, and the field disappears quickly. As a result, the overvoltage is suppressed and quickly reduced. To the control device And circuit elements use, in which it becomes possible to protect the load of the rotary electric machine from such deterioration or damage due to overvoltage.

Embodiment 4 FIG.
FIG. 9 is a block diagram showing the configuration of a control apparatus for a rotating electrical machine for a vehicle according to Embodiment 4 of the present invention, and FIG. 10 is an operational characteristic diagram for explaining the operation. When the overvoltage determination means 18 determines that the overvoltage is present, the control device sets the power conversion device 4 in the phase short-circuit state as in the first embodiment, and the field current control means 7 rotates as in the third embodiment. A field voltage in the reverse direction is applied to the electric machine 11.

  When the overvoltage determination unit 18 determines the overvoltage in the same manner as in the first embodiment, the overvoltage determination result is given to the command value calculation unit 1, the field current control unit 7, and the power conversion device 4. The command value calculation means 1 immediately shifts the generated power command and the field current command to 0, and the field current control means 7 quickly lowers the field magnetic flux by reversing the direction of the field voltage. On the other hand, the power converter 4 shifts the rotary electric machine 11 to the phase short circuit state, and sets the AC terminal of the rotary electric machine 11 to be short-circuited at one point.

  FIG. 9 shows characteristics when such control is performed. The generated power command value becomes 0, the field current quickly becomes 0 by reverse excitation, and the rotating electrical machine 11 is in a phase short-circuit state. The short-circuit current flows, but since the field falls quickly, the short-circuit current also decays quickly. By controlling in this way, the direct-current voltage decreases rapidly after rising to point E in the figure, and the overvoltage can be suppressed to the minimum.

  The rotating electrical machine functions as an electric motor or a generator, the rotating electrical machine is supplied with electric power, and is charged by the output of the rotating electrical machine, and the rotating electrical machine control means. An electric power converter that operates as an inverter when supplying electric power to the electric machine, and a rectifier when charging a DC power supply from the rotating electric machine, a field current control means that controls the field current of the rotating electric machine, An overvoltage determination means for determining an overvoltage of the output circuit. When the overvoltage determination means determines that the overvoltage is present, the field current control means applies a field voltage in the reverse direction to the rotating electrical machine and demagnetizes the power converter. Since the rotating electrical machine is put into a phase short-circuit state, even if the DC power source is opened during power generation of the rotating electrical machine and a sudden voltage increase occurs, the field magnetic field of the rotating electrical machine is shut off and the residual field magnetic flux is quickly removed. In As a result of controlling the rotating electrical machine to the phase short-circuit state, the overvoltage can be minimized, and the circuit elements used in the control device and the load of the rotating electrical machine can be protected from deterioration or damage due to the overvoltage. It will be.

It is a block diagram which shows the structure of the control apparatus of the rotary electric machine for vehicles by Embodiment 1 of this invention. FIG. 5 is an operational characteristic diagram for explaining the operation of the control device for a vehicular rotating electrical machine according to the first embodiment of the present invention. FIG. 5 is an operational characteristic diagram for explaining the operation of the control apparatus for a rotating electrical machine for a vehicle according to Embodiment 1 of the present invention. FIG. 5 is an operational characteristic diagram for explaining the operation of the control device for a vehicular rotating electrical machine according to the first embodiment of the present invention. It is a block diagram which shows the structure of the control apparatus of the rotary electric machine for vehicles by Embodiment 2 of this invention. It is an operation characteristic diagram explaining operation | movement of the control apparatus of the rotary electric machine for vehicles by Embodiment 2 of this invention. It is a block diagram which shows the structure of the control apparatus of the rotary electric machine for vehicles by Embodiment 3 of this invention. It is an operational characteristic diagram explaining operation | movement of the control apparatus of the rotary electric machine for vehicles by Embodiment 3 of this invention. It is a block diagram which shows the structure of the control apparatus of the rotary electric machine for vehicles by Embodiment 4 of this invention. It is an operational characteristic diagram explaining operation | movement of the control apparatus of the rotary electric machine for vehicles by Embodiment 4 of this invention. It is a block diagram which shows the structure of the control apparatus of the conventional rotary electric machine for vehicles.

Explanation of symbols

1 command value calculation means, 2 AC current command calculation means,
3 AC voltage command calculation means, 4 power converter,
5 field current command calculation means, 6 field voltage command calculation means,
7 field current control means, 8 voltage smoothing device, 9 voltage detector,
10 rotation speed / angle calculation unit, 11 rotating electric machine, 12 rotation detector,
13 DC power supply, 14, 15 connector, 16 control means,
17 Current detector, 18 Overvoltage determination means.

Claims (5)

A rotating electrical machine coupled to an internal combustion engine and functioning as an electric motor or generator;
When supplying electric power to the rotating electrical machine, further comprising a DC power source charged by the output of the rotating electrical machine, and a control means for controlling the rotating electrical machine, the control means when supplying power to the rotating electrical machine A power converter that operates as an inverter and operates as a rectifier when charging the DC power supply from the rotating electrical machine, and a field current control unit that supplies and controls a field current to a field coil of the rotating electrical machine; And overvoltage determination means for determining an overvoltage of the output circuit of the rotating electrical machine,
The control apparatus for a rotating electrical machine for a vehicle, wherein when the overvoltage determining means determines an overvoltage, the power conversion device puts the rotating electrical machine into a phase short circuit state. A rotating electrical machine coupled to an internal combustion engine and functioning as an electric motor or generator;
The rotating electric machine is supplied with electric power, and is provided with a DC power source charged by the output of the rotating electric machine, and a control means for controlling the rotating electric machine, and gives a current command to the rotating electric machine. AC current command calculation means, a power converter that operates as an inverter when supplying electric power to the rotating electrical machine, and operates as a rectifier when charging the DC power source from the rotating electrical machine, and a field of the rotating electrical machine Field current control means for supplying and controlling field current to the coil, and overvoltage determination means for determining an overvoltage of the output circuit of the rotating electrical machine,
When the overvoltage determining means determines that the voltage is an overvoltage, the AC current command calculating means controls the power converter to supply a phase-weakened field current to the armature coil of the rotating electrical machine. A control device for a rotating electrical machine for a vehicle.   3. The control of a rotating electrical machine for a vehicle according to claim 2, wherein the phase-controlled field weakening current is a current having a phase that does not contribute to torque generation when the rotating electrical machine is caused to function as a generator. apparatus. A rotating electrical machine coupled to an internal combustion engine and functioning as an electric motor or generator;
The rotating electrical machine is supplied with electric power, and is provided with a DC power source charged by the output of the rotating electrical machine, and a control means for controlling the rotating electrical machine. The control means includes a field coil in the rotating electrical machine. A field current control means for supplying and controlling current and an overvoltage determination means for determining an overvoltage of the output circuit of the rotating electrical machine, and when the overvoltage determination means determines that the overvoltage, the field current A control device for a vehicular rotating electrical machine, wherein the control means applies a field voltage in a reverse direction to the rotating electrical machine to demagnetize. A rotating electrical machine coupled to an internal combustion engine and functioning as an electric motor or generator;
When supplying electric power to the rotating electrical machine, further comprising a DC power source charged by the output of the rotating electrical machine, and a control means for controlling the rotating electrical machine, the control means when supplying power to the rotating electrical machine A power converter that operates as an inverter and operates as a rectifier when charging the DC power supply from the rotating electrical machine, and a field current control unit that supplies and controls a field current to a field coil of the rotating electrical machine; And an overvoltage determining means for determining an overvoltage of the output circuit of the rotating electrical machine, and when the overvoltage determining means determines an overvoltage, the field current control means applies a field voltage in a reverse direction to the rotating electrical machine. And the power conversion device puts the rotating electrical machine into a phase short circuit state.

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