The invention provides a motor driving device, a motor driving method, and a computer readable medium, which can limit command torque at a proper limit rate and can reliably perform thermal protection on an inverter circuit. A motor drive device for controlling a motor on the basis of a command torque, the motor drive device comprising a housing, and a capacitor and a power module housed in the housing, the motor drive device comprising: a temperature detection means for respectively detecting the capacitor temperature of the capacitor, the power module temperature of the power module, and the in-housing temperature inside the housing; a limit rate determination means for determining a torque limit rate for limiting the command torque on the basis of the command torque and the capacitor temperature, the power module temperature, and the housing interior temperature detected by the temperature detection means; and a torque control means that calculates a torque upper limit value on the basis of the torque limit rate determined by the limit rate determination means, and controls the electric motor using the smaller one of the command torque and the torque upper limit value as a target torque.
本发明提供电动机驱动装置、方法及计算机可读取介质,能以合适的限制率来对指令转矩进行限制,从而能可靠地对逆变器电路进行热保护。电动机驱动装置基于指令转矩来对电动机进行控制,包括壳体及收纳于壳体内的电容器和功率模块,该电动机驱动装置包括:分别对电容器的电容器温度、功率模块的功率模块温度和壳体内的壳体内温度进行检测的温度检测单元;基于指令转矩、及温度检测单元所检测出的电容器温度、功率模块温度和壳体内温度,来决定对指令转矩进行限制的转矩限制率的限制率决定单元;以及基于限制率决定单元所决定的转矩限制率,来计算转矩上限值,将指令转矩和转矩上限值中较小一方的转矩作为目标转矩来对电动机进行控制的转矩控制单元。
Motor driving device, motor driving method, and computer readable medium
电动机驱动装置、电动机驱动方法及计算机可读取介质
2022-10-04
Patent
Elektronische Ressource
Chinesisch
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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