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永磁同步电机直接交轴磁链控制

Keywords: 永磁同步电动机,交轴磁链,空间电压矢量,直接转矩控制

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Abstract:

隐极式永磁同步电机转矩中定子磁链幅值和转矩角均为可控变量,两者的共同作用效果即为交轴磁链.以定子绕组星形连接的永磁同步电机为例,提出了一种通过控制交轴磁链实现对电机转矩直接控制的方法.该方法直接根据转矩控制要求选择优化的电压矢量实现对电机交轴磁链的控制,不要求保持定子磁链幅值恒定,不需要复杂的坐标变换.仿真结果验证了理论分析的正确性和控制方法的可行性.

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