绕组分段永磁直线同步电机无传感器控制

发布时间：2018-03-12 18:02

本文选题：绕组分段　切入点：永磁直线同步电机　出处：《电工技术学报》2017年21期 　论文类型：期刊论文

【摘要】：绕组分段永磁同步直线电机(WS-PMLSM)定子特殊的分段结构导致动子在跨段过程中各关键电磁参数将随动子位置改变而剧烈变化,从而将给实施无位置传感器控制带来巨大的挑战与困难。为解决这一问题,首先利用有限元分析及实验测试的方法对动子跨段过程中关键电磁参数的非线性变化规律进行分析,从而构建WS-PMLSM的精确数学模型;然后针对相邻两段定子观测反电动势信号幅值变化的规律,提出基于反馈自适应滑模观测器的段间观测反电动势同步合成法,以取得段间磁极位置的精确辨识,最终实现其在宽调速范围内全行程无传感器电流-速度双闭环运行;最后对所提算法进行仿真分析和实验测试,结果证明该方法有效可行。
[Abstract]:The special subsection structure of the stator of the winding segment permanent magnet synchronous linear motor (WS-PMLSM) causes the key electromagnetic parameters of the actuator to change the position of the actuator and change dramatically during the cross-section process. In order to solve this problem, the nonlinear variation of the key electromagnetic parameters in the cross-section of the actuator is analyzed by using the finite element analysis and the experimental test method, which will bring great challenges and difficulties to the implementation of the sensorless control. The accurate mathematical model of WS-PMLSM is constructed, and the synchronous synthesis method based on feedback adaptive sliding mode observer is proposed to synchronize the observed backEMF signals between adjacent two stator segments, which is based on feedback adaptive sliding mode observer, according to the rule of amplitude variation of the signal of BEMF observed by adjacent two-stage stator. In order to obtain the accurate identification of the magnetic pole position between segments, the sensorless current-velocity double closed-loop operation is finally realized in the wide speed range. Finally, the simulation analysis and experimental test of the proposed algorithm are carried out, and the results show that the proposed method is effective and feasible.
【作者单位】：嘉兴学院机电工程学院;哈尔滨工业大学电气工程及自动化学院;
【基金】：浙江省自然科学基金项目(LY17E070006) 浙江省科技厅公益性项目(2015C31055)资助
【分类号】：TM341

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