摘要：针对兆瓦级直驱风力发电系统永磁同步电机特点，利用滑模控制对其参数变化具有强鲁棒性的优点，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。同时为了能够准确地获取转子位置信息，设计了一种PI锁相环技术，并给出了PI锁相环技术的参数设计方法。与传统滑模观测器算法相比，仿真结果验证了算法的可行性和有效性。
关键词：六相永磁同步发电机；扩展反电动势；自适应滑模观测器；PI锁相环
Abstract: A new adaptive sliding mode observer (SMO) algorithm was designed for MWlevel directdrive sixphase permanent magnet wind generator in this paper, which avoided the phase lag caused by low pass filter. Moreover, in order to accurately obtain the rotor position information, this paper designed a phaselocked loop technology based on PI regulator, and gave the parameters design method of the phase locked loop. Comparing with the traditional SMO, the simulation results verified the better feasibility and effectiveness of the algorithm
Key words: sixphase PMSM；EEMF；adaptive slidingmode observer；PI phase locked loop