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六相永磁同步电机缺相容错控制

, PP. 49-58

Keywords: 六相永磁同步电机,容错控制,优化电流,缺相,转矩脉动

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Abstract:

为了实现六相永磁同步电机缺相后的矢量控制,根据定子磁势不变的原则,以铜耗最小为目标,对双Y移相30°六相永磁同步电机缺一相绕组的电流进行优化求解。根据所求得的优化电流,获得缺相后的变换矩阵,从而建立缺一相的六相永磁同步电机旋转坐标系下数学模型,并由此提出缺相后的解耦矢量控制方法。分析漏感和空间谐波对该容错控制下转矩脉动的影响,提出相应的抑制方法。实验验证了六相永磁同步电机容错控制算法的正确性,其有效减少了缺相后的转矩脉动,且具有较好的动态性能,提高了驱动系统的可靠性。

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