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感应电动机在弱磁区的高性能电流控制策略

, PP. 61-66

Keywords: 感应电动机,弱磁控制,电流分配,电流解耦控制

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Abstract:

针对感应电动机在弱磁区的电流控制问题即电流分配与电流解耦控制,为实现最大力矩控制,根据感应电动机全频段运行范围内电流、电压、转矩与转速的关系,提出了一种不依赖于电机参数的电流分配方法。为克服耦合电压在高频区对电流控制的影响,提出了一种解耦过程无需电机参数的电流矢量控制器,实现了高性能电流动态解耦控制。通过实验对比本文方法与传统方法,证明了本文方法在弱磁区能够获得更佳的电流控制效果,增大了输出力矩。

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