The invention provides a control device for a permanent magnet synchronous motor, which can enable a weak current command to follow the rapid change of the rotation speed. A control device (2) for a permanent magnet synchronous motor is provided with: a reference voltage value calculation unit (3) for calculating a reference voltage value; an output voltage value calculation unit (4) for calculating an output voltage value on the basis of a voltage command; and a weak current command calculation unit (5) for calculating a weak current command on the basis of the reference voltage value and the output voltage value. A voltage command calculation unit (6) that calculates a voltage command on the basis of the weak current command; and a power converter (7) that supplies power to the permanent magnet synchronous motor (1) on the basis of the voltage command. The weak current command calculation unit calculates a weak current command in which the high-frequency component has been amplified on the basis of the difference between the reference voltage value and the output voltage value.
本发明提供一种能够使弱电流指令跟随转速的急剧变化的永磁体同步电动机的控制装置。永磁体同步电动机的控制装置(2)包括对基准电压值进行运算的基准电压值运算部(3)、根据电压指令对输出电压值进行运算的输出电压值运算部(4)、根据基准电压值和输出电压值对弱电流指令进行运算的弱电流指令运算部(5)、根据弱电流指令对电压指令进行运算的电压指令运算部(6)、以及根据电压指令向永磁体同步电动机(1)供电的功率转换器(7)。弱电流指令运算部根据基准电压值与输出电压值的差分,对放大了高频分量的弱电流指令进行运算。
Control device for permanent magnet synchronous motor and electric power steering device provided with same
永磁体同步电动机的控制装置及具有该控制装置的电动助力转向装置
2022-12-30
Patent
Electronic Resource
Chinese
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