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标题：永磁同步电机新型自适应滑模观测器设计 |
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作者：丁稳房，熊俊超，宫力 |
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| 2016年第10期 访问次数：341次 |
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摘要：由于文中所研究的内置式永磁同步电机(PMSM)的定子电感满足Ld≠Lq，导致扩展反电动势(EEMF)的大小除了与电机的转速有关外，还与定子电流id和定子电流iq的微分piq有关，这意味着电机的负载状态将影响EEMF的大小，进而会影响转子位置估计的精确性。特别地，对于负载能力较强的大功率PMSM而言，对无传感器控制算法的控制性能具有更为严格的要求。为此，文中设计了一种了新型自适应滑模观测器算法，避免了低通滤波器的使用会引起的相位滞后及幅值变化，同时详细分析了观测器矩阵的参数设计。为了能够准确地获取转子位置信息，文中设计了一种PI锁相环技术，详细分析了锁相环技术的鲁棒性及稳定性，并给出了PI锁相环技术的参数设计方法。仿真实验结果验证了算法的可行性和有效性。
关键词：永磁同步电机; 扩展反电动势; 自适应滑模观测器; PI锁相环
Abstract: Due to the saliency of the interior permanent magnet synchronous motor (PMSM) (ie., Ld Lq), the magnitude of extended EMF (EEMF) is a function of rotor speed, stator current, and derivative of stator current, which means that the load condition will affect the magnitude of the EEMF, and this effect is nonlinear. Especially, for heavyload applications of interior PMSM, the control performance of sensorless control algorithm is very important. To overcome this problem, a new adaptive sliding mode observer algorithm was designed in this paper, which avoided the phase lag caused by low pass filter, and gave a detailed analysis of the parameter matrix of observer design. Moreover, in order to accurately obtain the rotor position information, this paper designed a phaselocked loop technology based on PI regulator, a detailed analysis of the robustness and stability of the phase locked loop technology, and gave the parameters design method of the phase locked loop. The simulation and experimental results verify the feasibility and effectiveness of the algorithm.
Key words: PMSM; EEMF; adaptive slidingmode observer; PI phase locked loop
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