基于改进滑模观测器的永磁风力发电机无传感器控制策略  

SENSORLESS CONTROL STRATEGY OF PERMANENT MAGNET SYNCHRONOUS GENERATOR BASED ON IMPROVED SLIDING MODE OBSERVER

作　　者：何山[1,2] 陈小丹 程静[1,2] 王维庆[1,2] 王本广 王浩成 He Shan;Chen Xiaodan;Cheng Jing;Wang Weiqing;Wang Benguang;Wang Haocheng(School of Electrical Engineering,Xinjiang University,Urumqi 830049,China;Engineering Research Center of Ministry of Education for Renewable Energy Power Generation and Grid Connection Control,Urumqi 830049,China)

机构地区：[1]新疆大学电气工程学院,乌鲁木齐830049 [2]可再生能源发电与并网控制教育部工程研究中心,乌鲁木齐830049

出　　处：《太阳能学报》2019年第12期3635-3644,共10页Acta Energiae Solaris Sinica

基　　金：新疆维吾尔自治区重点实验室开放课题（2018D04005）;国家自然科学基金（51767024;51667020）;新疆维吾尔自治区自然科学基金（2018D01C046）

摘　　要：为了获得准确的发电机转速和转子位置信息,提高无机械传感器永磁风力发电机系统驱动性能,针对传统滑模观测器高频抖振与谐波误差问题,采用Sigmiod函数代替不连续符号函数的方法,建立一种基于改进滑模观测器的永磁风力发电机无传感器控制模型,并依据噪声消除原理,提出一种自适应陷波滤波器结合正交锁相环的方法。该方法能自适应补偿估计电动势中的谐波,消除相应的位置估计误差;根据所估计的位置信息,利用最小均方算法,对自适应陷波滤波器的谐波系数进行连续自整定。最后,利用1.2 MW永磁风力发电系统进行仿真,结果表明,所提方法不仅能有效抑制系统抖振与谐波,而且能提高转子位置与转速动态跟踪精度,保证观测器鲁棒性。In order to obtain accurate generator speed and rotor position information,improve the drive performance of the non-mechanical sensor permanent magnet wind turbine system,the sigmiod function is used to replace the discontinuous symbol function for the high-frequency chattering and harmonic error of the traditional sliding mode observer.In this paper,a sensorless control model of permanent magnet wind turbine based on improved sliding mode observer is established.According to the principle of noise elimination,an adaptive notch filter combined with quadrature phase-locked loop is proposed.The method is able to adaptively compensate the harmonics in the estimated electromotive force and eliminate the corresponding position estimation error.According to the estimated position information,the harmonic coefficients of the adaptive notch filter are continuously self-tuned by the least mean square algorithm.Finally,the simulation is carried out by using 1.2 MW permanent magnet wind power generation system.The results show that the proposed method can not only effectively suppress the chattering and harmonics of the system,but also improve the dynamic tracking accuracy of the rotor position and speed,and ensure the robustness of the observer.

关 键 词：无传感器控制 滑模控制 自适应滤波 同步发电机 

分 类 号：TM464[电气工程—电器]