Research of Sensorless Control Method for PMSM Based on Specific Voltage Feed-forward Decoupling

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Zhiqin Mai, Shun Li, Fei Xiao, Jilong Liu, Yalu Mu, Kefeng Li
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引用次数: 0

Abstract

The sensorless control of permanent magnet synchronous motor (PMSM) has issues of complex signal process, cumbersome system structure and parameter setting, etc. To eliminate these defects and reduce costs of computation, a sensorless control method based on specific voltage feed-forward decoupling (VFD) is proposed for the medium and high-speed regions. On the one hand, the proposed method utilizes a specific feed-forward voltage to decouple the d-q axis current, so that the output of current regulator directly contains the position error signal and rotor magnetic flux information, which simplifies the signal processing. On the other hand, the normalization of position error signal eliminates the influence of rotor speed and magnetic flux on the loop feed-forward gain of position estimation. With the proposed method, the rotor position and the rotor magnetic flux can be observed simultaneously and the process of parameter setting can be simplified. Moreover, to meet the engineering requirements, a full-speed sensorless control scheme combines IF control starting strategy with VFD is designed in this paper. The experimental results show that the sensorless method for the medium and high speed proposed in this paper has good dynamic and static performance, the observed result of rotor magnetic flux is accurate, and the designed sensorless control scheme for the full-speed region is simple and practical.

Abstract Image

基于特定电压前馈解耦的 PMSM 无传感器控制方法研究
永磁同步电机(PMSM)的无传感器控制存在信号处理复杂、系统结构和参数设置繁琐等问题。为了消除这些缺陷并降低计算成本,本文提出了一种基于特定电压前馈解耦 (VFD) 的中高速无传感器控制方法。一方面,该方法利用特定前馈电压对 d-q 轴电流进行解耦,使电流调节器的输出直接包含位置误差信号和转子磁通信息,从而简化了信号处理。另一方面,位置误差信号的归一化消除了转子速度和磁通对位置估计环路前馈增益的影响。采用所提出的方法,可以同时观测转子位置和转子磁通,简化参数设置过程。此外,为了满足工程要求,本文还设计了一种全速无传感器控制方案,将中频控制启动策略与 VFD 相结合。实验结果表明,本文提出的中高速无传感器方法具有良好的动态和静态性能,转子磁通观测结果准确,设计的全速区无传感器控制方案简单实用。
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来源期刊
Journal of Electrical Engineering & Technology
Journal of Electrical Engineering & Technology ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
4.00
自引率
15.80%
发文量
321
审稿时长
3.8 months
期刊介绍: ournal of Electrical Engineering and Technology (JEET), which is the official publication of the Korean Institute of Electrical Engineers (KIEE) being published bimonthly, released the first issue in March 2006.The journal is open to submission from scholars and experts in the wide areas of electrical engineering technologies. The scope of the journal includes all issues in the field of Electrical Engineering and Technology. Included are techniques for electrical power engineering, electrical machinery and energy conversion systems, electrophysics and applications, information and controls.
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