基于脉振高频电压注入法的无传感器控制研究  

Research on sensorless control based on high-frequency pulse voltage injection method

作　　者：顾玉琦 夏鲲 张洪玮 GU Yuqi;XIA Kun;ZHANG Hongwei(College of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学机械工程学院,上海市200093

出　　处：《农业装备与车辆工程》2023年第6期41-45,共5页Agricultural Equipment & Vehicle Engineering

基　　金：浦东新区科技发展基金(PKX2020-D4)。

摘　　要：针对永磁同步电机在零低速下无传感器控制,理论分析了脉振高频电压注入法算法的计算流程,研究了转子位置估计中的系数意义,分析了在转子位置估计中产生相位延迟的来源,建立基于两相旋转坐标系下的仿真模型,通过仿真逐步验证算法的可行性和有效性。搭建实验平台对无位置传感器系统进行了控制实验。最后仿真和实验结果表明,基于脉振高频电压注入法的永磁同步电机无传感器控制系统中转子位置估计的相位延迟主要源于低通滤波器。该控制系统的稳态速度偏差在±0.5 r/min以下。位置跟踪观测器的跟随性能良好,但由于低通滤波器的存在,控制系统在转子位置估计中有1.5 rad的相位延迟。Aiming at the sensorless control of permanent magnet synchronous motor at zero and low speed,the calculation flow of the high-frequency pulse voltage injection method is theoretically analyzed,the simulation model based on two-phase rotating coordinate system is established,the coefficient significance in rotor position estimation is studied,the source of phase delay in rotor position estimation is analyzed,and the feasibility and effectiveness of the algorithm are gradually verified by simulation.An experimental platform is built to control the sensorless system.Finally,the simulation and experimental results show that the phase delay of rotor position estimation in permanent magnet synchronous motor sensorless control system based on pulse high-frequency voltage injection method mainly comes from low pass filter.The steady state speed deviation of the control system is less than±0.5 r/min.The tracking performance of the position tracking observer is good,but due to the existence of low-pass filter,the control system has a phase delay of 1.5 rad in rotor position estimation.

关 键 词：永磁同步电机 高频电压 位置检测 低通滤波器 相位延迟 

分 类 号：TM351[电气工程—电机]