Full-speed domain position sensorless control strategy for PMSM based on a novel phase-locked loop

IF 5.4 2区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS
Guozhong Yao, Zixian Yang, Shaojun Han, Zhengjiang Wang
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引用次数: 0

Abstract

This paper proposes a full-speed-domain position-sensor-less control strategy for precise control under forward and reverse rotation conditions to address the weak convex polarity of surface-mounted permanent magnet synchronous motor (SPMSM). The strategy comprises several key stages: pre-positioning of the rotor, constant current variable frequency (I/F) start-up, construct the Luenberger State Observer, and utilization of an improved phase-locked loop (PLL) for position estimation. In the pre-positioning stage, a constant amplitude current is applied to drag the rotor to a predetermined position. Subsequently, the I/F start-up stage accelerates the motor to a predetermined speed before transitioning to the Luenberger observer for closed-loop speed control, which is based on an extended back electromotive force (back-EMF) a two-phase rotating coordinate system. The improved PLL for position and speed estimation features three components: a phase discriminator (PD), a voltage-controlled oscillator (VCO), and loop filter (LF). Experimental results demonstrate the efficacy of the proposed strategy, showing quick start-up response, speed estimation error below 2 RPM, rotor position estimation error under 0.6 degrees post-loop closure, stable tracking during rapid speed changes, and consistent accuracy and stability even under reverse rotation conditions, thereby meeting the control strategy’s objectives.

基于新型锁相环的 PMSM 全速域位置无传感器控制策略
本文针对表面贴装式永磁同步电机(SPMSM)的弱凸极性问题,提出了一种全速域无位置传感器控制策略,用于在正转和反转条件下实现精确控制。该策略包括几个关键阶段:转子预定位、恒流变频 (I/F) 启动、构建卢恩贝格尔状态观测器以及利用改进的锁相环 (PLL) 进行位置估计。在预定位阶段,应用恒定振幅电流将转子拖动到预定位置。随后,输入/输出启动阶段将电机加速到预定速度,然后过渡到用于闭环速度控制的卢恩贝格尔观测器,该观测器基于扩展的反向电动势(back-EMF)两相旋转坐标系。用于位置和速度估计的改进型 PLL 由三个部分组成:相位鉴别器 (PD)、压控振荡器 (VCO) 和环路滤波器 (LF)。实验结果证明了所提策略的有效性,显示了快速启动响应、低于 2 RPM 的速度估计误差、低于 0.6 度的环路闭合后转子位置估计误差、快速速度变化期间的稳定跟踪,以及即使在反向旋转条件下也能保持一致的精度和稳定性,从而实现了控制策略的目标。
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来源期刊
Control Engineering Practice
Control Engineering Practice 工程技术-工程:电子与电气
CiteScore
9.20
自引率
12.20%
发文量
183
审稿时长
44 days
期刊介绍: Control Engineering Practice strives to meet the needs of industrial practitioners and industrially related academics and researchers. It publishes papers which illustrate the direct application of control theory and its supporting tools in all possible areas of automation. As a result, the journal only contains papers which can be considered to have made significant contributions to the application of advanced control techniques. It is normally expected that practical results should be included, but where simulation only studies are available, it is necessary to demonstrate that the simulation model is representative of a genuine application. Strictly theoretical papers will find a more appropriate home in Control Engineering Practice''s sister publication, Automatica. It is also expected that papers are innovative with respect to the state of the art and are sufficiently detailed for a reader to be able to duplicate the main results of the paper (supplementary material, including datasets, tables, code and any relevant interactive material can be made available and downloaded from the website). The benefits of the presented methods must be made very clear and the new techniques must be compared and contrasted with results obtained using existing methods. Moreover, a thorough analysis of failures that may happen in the design process and implementation can also be part of the paper. The scope of Control Engineering Practice matches the activities of IFAC. Papers demonstrating the contribution of automation and control in improving the performance, quality, productivity, sustainability, resource and energy efficiency, and the manageability of systems and processes for the benefit of mankind and are relevant to industrial practitioners are most welcome.
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