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基于死区补偿的磁通切换永磁电机定子磁场定向控制

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Keywords: 磁通切换,永磁电机,定子磁场定向,死区补偿,dSPACE

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Abstract:

磁通切换永磁电机具有功率密度高、效率高、反电动势正弦的优点,在推导其数学模型的基础上,采用电压空间矢量调制方法,对该电机的定子磁场定向控制策略进行了分析与研究。另外,由于空间矢量调制的死区效应严重影响电机输出电流的质量,进而影响到电机的转速与转矩输出特性,采用预测电流控制方法对死区进行补偿。通过半实物仿真平台dSPACE实现了定子磁场定向控制算法,并在一台2kW磁通切换永磁电机驱动系统上验证了所提控制方法的有效性。该控制算法对其他定子永磁型电机的控制系统设计具有一定的借鉴作用。

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