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基于变系数电感模型开关磁阻电机四象限无位置传感器技术

, PP. 114-124

Keywords: 开关磁阻电机,无位置传感器,变系数电感模型,四象限

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Abstract:

开关磁阻电机相电感具有明显的非线性,随饱和情况不同相电感形状发生明显变化。研究了忽略三次以上谐波电感模型系数随电流变化关系,提出了基于变系数电感模型的无位置传感器控制策略。利用电机变系数电感与转子位置角度之间的关系,构建了基于DSP数字信号处理器的四象限无位置传感器控制系统。采用软件完成了上述转子位置估计模块,实现对开关磁阻电机的无位置控制。通过实验对该方法的可行性进行了验证,结果表明该方法估计转子位置精确、象限间切换准确可靠,系统具有良好的静态和动态性能。

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