基于估计位置反馈电流解调算法的改进型高频旋转电压注入无位置传感器控制策略  

Sensorless Control Strategy of Improved HF Rotating Voltage Injection Based on Estimated Position Feedback Current Demodulation Algorithm

作　　者：麦志勤[1] 刘计龙[1] 肖飞[1] 李科峰 郑云波 Mai Zhiqin;Liu Jilong;Xiao Fei;Li Kefeng;Zheng Yunbo(National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering,Wuhan 430033 China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,武汉430033

出　　处：《电工技术学报》2022年第4期870-881,891,共13页Transactions of China Electrotechnical Society

基　　金：国防科技卓越青年基金(2018-JCJQ-ZQ-002);国家自然科学基金青年基金(51807200)资助项目。

摘　　要：高频旋转电压注入法是一种常用的永磁同步电机零低速区转子位置估计方法,其电流解调通常采用同步轴系高通滤波器(SFHF)算法实现,但不足之处在于,不仅电流解调过程复杂,而且位置估计误差随转速的变化而变化。为此,提出一种基于估计位置反馈(EPF)的电流解调算法。一方面,利用EPF电流解调算法设计高效的位置误差补偿策略,消除转速对位置估计精度的影响;另一方面,采用该电流解调算法后系统具有独立的位置估计环路,通过在位置环采用陷波器(NF)对谐波成分陷波,有效地扩展了位置环闭环带宽,从而提高了高动态加减速工况的位置估计精度。该文回顾传统高频旋转电压注入法的实现过程,详细介绍EPF电流解调算法以及位置估计误差补偿策略,并分析利用NF对位置环带宽进行扩展的原理。最后搭建永磁同步电机实验平台对所提策略进行实验验证。High frequency(HF)rotating voltage injection method is widely used to estimate the rotor position in zero-and low-speed zone for permanent magnet synchronous motor(PMSM),where synchronous frame high-pass filter(SFHF)algorithm is employed for current demodulation.However,the disadvantage of the SFHF algorithm is that not only the current demodulation process is complicated,but also the position error changes with speed.To this end,a current demodulation algorithm based on the estimated position feedback(EPF)is proposed.On one hand,the efficient position error compensation strategy is designed with the EPF algorithm,which helps to eliminate the influence of speed on the accuracy of position estimation.On the other hand,a notch filter(NF)is employed in the position loop to eliminate the harmonic components,which expands the closed-loop bandwidth of the position loop effectively.Thus,the dynamic performance of position estimation is improved under fast acceleration and deceleration conditions.In this paper,the implementation of the traditional HF rotating voltage injection method is reviewed.Then,the EPF current demodulation algorithm and the position estimation error compensation strategy are introduced in detail.Moreover,the principle to expand the position loop bandwidth with NF is analyzed.Finally,the feasibility of the proposed strategy is verified through an PMSM experimental platform.

关 键 词：永磁同步电机 高频旋转电压注入法 同步轴系高通滤波器 电流解调 估计位置反馈 

分 类 号：TM351[电气工程—电机]