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Sensorless SPMSM Position Estimation Using Position Estimation Error Suppression Control and EKF in Wide Speed Range

机译:在宽速度范围内使用位置估计误差抑制控制和EKF进行无传感器SPMSM位置估计

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The control of a high performance alternative current (AC) motor drive under sensorless operation needs the accurate estimation of rotor position. In this paper, one method of accurately estimating rotor position by using both motor complex number model based position estimation and position estimation error suppression proportion integral (PI) controller is proposed for the sensorless control of the surface permanent magnet synchronous motor (SPMSM). In order to guarantee the accuracy of rotor position estimation in the flux-weakening region, one scheme of identifying the permanent magnet flux of SPMSM by extended Kalman filter (EKF) is also proposed, which formed the effective combination method to realize the sensorless control of SPMSM with high accuracy. The simulation results demonstrated the validity and feasibility of the proposed position/speed estimation system.
机译:在无传感器操作下控制高性能交流(AC)电动机驱动器需要精确估计转子位置。本文提出了一种同时使用基于电动机复数模型的位置估计和位置估计误差抑制比例积分(PI)控制器来精确估计转子位置的方法,用于表面永磁同步电动机(SPMSM)的无传感器控制。为了保证在弱磁通区域转子位置估计的准确性,提出了一种通过扩展卡尔曼滤波(EKF)识别SPMSM永磁体磁通的方案,形成了一种有效的组合方法,实现了无传感器控制。 SPMSM具有高精度。仿真结果证明了所提位置/速度估计系统的有效性和可行性。

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