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基于线性磁链的IPMSM位置检测技术

, PP. 67-72

Keywords: 内嵌式永磁同步电机,无位置传感控制,滑模观测器,场路耦合

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Abstract:

针对内嵌式永磁同步电机(IPMSM)很难在静止坐标系下利用磁链预估转子位置的问题,在基于线性磁链的IPMSM数学模型的基础上,用电流观测误差构建滑模平面,提出了一种用滑模观测器来预估转子位置和速度的方法。该方法解决了外加低通滤波器引起的预估磁链的相位滞后,提高了位置和速度估算的鲁棒性。建立场路耦合模式下的IPMSM全数字无位置传感矢量控制仿真系统,精确地反映永磁同步电机与控制系统的相互耦合特性,并搭建和仿真系统一致的实验平台。实验结果与仿真结果表明该设计方法的正确性和可实现性。

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