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压缩机用内置式永磁同步电机无位置传感器控制

, PP. 182-187

Keywords: 压缩机,内置式永磁同步电机,滑模观测器,无位置传感器控制

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Abstract:

分析了内置式永磁同步电机的数学模型,通过进行数学变形,提出了一种内置式永磁同步电机新的滑模位置观测器模型,模型只与q轴电感有关,而与d轴电感无关。同时采用双滤波器串联的方式来提取反电动势信息,可以实时测量在不同转速下的滤波器相移用于角度补偿。在启动部分采用I-F启动策略并实现无冲击切换,以适应压缩机用内置式永磁同步电机在全速度范围内负载不断变化的工况。最后,对本文所提的控制算法进行实验验证,证明了所有控制策略的有效性。

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