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无轴承开关磁阻电机缺相运行的控制方法

, PP. 140-147

Keywords: 无轴承开关磁阻电机,缺相,悬浮力补偿,提前开通,电流优化

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Abstract:

基于开关磁阻电机(SwitchedReluctanceMotor,SRM)固有的容错性能,研究无轴承开关磁阻电机(BearinglessSwitchedReluctanceMotor,BSRM)在缺相运行时的转矩、悬浮力协调控制方法。首先建立BSRM在缺相运行时的数学模型,分析其转矩分布特性,研究缺相运行时的转矩补偿方法。通过延长导通相开通区间,保证了无轴承电机在缺相运行时悬浮力产生的连续性。同时,为减小由于悬浮力补偿而产生的负转矩,提出了负转矩区主、悬浮绕组电流的优化控制方法。采用有限元法仿真说明所提缺相控制算法的正确性,并通过实验验证了该方法在BSRM缺相运行时具有良好的控制性能。

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