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考虑逆变器非线性的内置式永磁同步电机转子位置锁相环观测器

, PP. 172-179

Keywords: 内置式永磁同步电机,无位置传感器,滑模观测器,正交锁相环,逆变器非线性,补偿

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Abstract:

为了提高内置式永磁同步电机(IPMSM)无位置传感器控制性能,研究一种基于反电动势模型的正交锁相环转子位置观测器。在建立扩展反电动势模型滑模观测器基础上,采用对反电动势归一化的正交锁相环来获得转子位置信息,以降低噪声影响,并降低参数设计复杂性,通过分析观测器动态响应及抗负载扰动能力,采用极点配置方式设计观测器参数。在分析定子电流畸变对位置观测器负面影响基础上,采用一种饱和函数方式对死区效应进行补偿,以减小位置观测误差。对IPMSM无位置传感器矢量控制系统进行了实验,结果验证了该控制策略的有效性。

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