Control device for motor that drives a vehicle
First Claim
1. A control device for a motor that drives a vehicle and controls the motor by controlling an inverter device that converts a direct voltage, supplied from a direct current source, into an alternating voltage to be supplied to the motor, the control device comprising:
- a refrigerant temperature detector that detects a refrigerant temperature of a heat exchanger for heat exchange with the inverter device, anda torque restrictor that restricts an output torque of the motor when the inverter device is put in a state of overheat, wherein the torque restrictor restricts the output torque to a calculated continuous operation enabling torque so that the output torque when the refrigerant temperature detected by the refrigerant temperature detector is high is lower as compared with the output torque when the refrigerant temperature is low.
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Accused Products
Abstract
A control device for a motor that drives a vehicle and controls the motor by controlling an inverter device that converts a direct voltage, supplied from a direct current source, into an alternating voltage to be supplied to the motor, the control device having a refrigerant temperature detector that detects a refrigerant temperature of a heat exchanger for heat exchange with the inverter device, and a torque restrictor that restricts an output torque of the motor when the inverter device is put in a predetermined state, wherein the torque restrictor changes restrictions on the output torque on the basis of the refrigerant temperature detected by the refrigerant temperature detector.
22 Citations
12 Claims
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1. A control device for a motor that drives a vehicle and controls the motor by controlling an inverter device that converts a direct voltage, supplied from a direct current source, into an alternating voltage to be supplied to the motor, the control device comprising:
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a refrigerant temperature detector that detects a refrigerant temperature of a heat exchanger for heat exchange with the inverter device, and a torque restrictor that restricts an output torque of the motor when the inverter device is put in a state of overheat, wherein the torque restrictor restricts the output torque to a calculated continuous operation enabling torque so that the output torque when the refrigerant temperature detected by the refrigerant temperature detector is high is lower as compared with the output torque when the refrigerant temperature is low. - View Dependent Claims (2, 3, 4)
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5. A control device for a motor that drives a vehicle and for controlling the motor by controlling an inverter device that converts a direct voltage supplied from a direct current source, into an alternating voltage to be supplied to the motor, the control device comprising:
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refrigerant temperature detection means for detecting a refrigerant temperature of a heat exchanger for heat exchange with the inverter device, and torque restriction means for restricting an output torque of the motor when the inverter device is put in a state of overheat, wherein the torque restriction means restricts the output torque to a calculated continuous operation enabling torque so that the output torque when the refrigerant temperature detected by the refrigerant temperature detection means is high is lower as compared with the output torque when the refrigerant is low. - View Dependent Claims (6, 7, 8)
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9. A method for control of a motor, that drives a vehicle, by controlling an inverter device that converts a direct voltage supplied from a direct current source, into an alternating voltage to be supplied to the motor, the method comprising:
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detecting a refrigerant temperature of a heat exchanger for heat exchange with the inverter device, and restricting an output torque of the motor when the inverter device is put in a state of overheat, wherein the output torque is restricted to a calculated continuous operation enabling torque so that the output torque when the refrigerant temperature is high is lower as compared with the output torque when the refrigerant temperature is low. - View Dependent Claims (10, 11, 12)
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Specification