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六相永磁同步电机谐波电流抑制技术

, PP. 31-36

Keywords: 六相永磁同步电机,磁场畸变,数学模型,谐波电流,解耦控制

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Abstract:

多相电机由于各相之间耦合影响,即使磁场出现很小畸变,也能导致很大谐波电流。针对这个问题,首先建立六相永磁电机数学模型,分析谐波电流原因,并提出一种新的解耦矩阵。将六相永磁同步电机中基波电流与谐波电流实现解耦,将不同频率的交流电流分别转换为不同平面直流量,从而实现对多相电机谐波电流控制。采用本文提出电流解耦控制与传统将六相电机当作两个三相电机控制方法进行对比仿真分析和实验对照,结果表明本文提出方法能够有效抑制谐波电流,有利于提高控制性能。

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