基于自适应基准锁相环的高速永磁电机转子位置误差全补偿方法

A Rotor Position Error Compensation Algorithm for High-Speed Permanent Magnet Motor Based on Phase-Locked Loop with Adaptive Reference

转子位置信息的精度影响高速永磁同步电机的运行性能,在高速运行条件下,转子位置估算容易受到环路滤波器和电机参数偏差等非理想因素的影响。首先,针对转子位置估算误差,该文提出一种自适应基准锁相环,主要思想是锁相环通过误差重构,实现对基频相关误差补偿。在此基础上,以最小电流为目标自适应调节锁相环的锁相基准,实现对非基频相关误差的补偿,最终实现对位置误差的全补偿,该方法实现简单、参数依赖性低、鲁棒性强。最后,基于一台高速永磁同步电机进行仿真与实验,结果验证了所提出方法的有效性。

The accuracy of rotor position information affects the performance of high-speed permanent magnet synchronous motor(HSPMSM).The rotor position estimation is vulnerable to some non-ideal factors at high speed,such as the filters and the deviations of motor parameters.In this paper,a phase-locked loop with adaptive phase-locked reference is proposed to eliminate the rotor position error.The main idea of the proposed method is that the position error related to the fundamental frequency is compensated by reconstructing the position error with phase-locked loop(PLL).The reference of phase-locked loop is adjusted adaptively to minimize the current and compensate the position error of non-fundamental frequency.In this way,the position error is fully compensated.The proposed method has the advantages of simple implementation,low parameter-dependence and strong robustness.Finally,simulations and experiments were conducted on a HSPMSM,and the results verified the effectiveness of the proposed method.