电机与控制应用2023，Vol.50Issue(12)：10-20,11.DOI:10.12177/emca.2023.145
基于基波PWM激励和简化电流斜率测量的多相永磁同步电机转子位置估测技术
Sensorless Rotor Position Estimation for Dual Three-Phase PMSMs Using Fundamental PWM Excitation and Simplified Current Slope Measurement
摘要
Abstract
The existing sensorless rotor position estimation technique for a dual-three phase permanent magnet synchronous motor(DTP-PMSM)that relies on the fundamental PWM excitation is able to achieve rotor position estimation at low and zero speeds without injecting high-frequency signals.However,it needs to take multiple current samples during individual active voltage vectors generated by a voltage source inverter.Although it is effective,the requirement on the multiple current sampling hinders its practical application.This paper therefore proposes a new algorithm to overcome the above shortcoming.The algorithm directly utilizes the saliency effect of dual three-phase PMSMs to extract the rotor position information in the average current derivatives of two adjacent PWM periods from the stationary coordinates by the synchronous sampling technique.The new algorithm allows a synchronous current sampling for both the rotor position estimation and the current control,which greatly eases the practical implementation.Finally,the proposed algorithm is effectively verified in a DTP-PMSM simulation model at low and zero speeds.关键词
双三相永磁同步电机/无位置传感器/凸极效应/同步采样Key words
dual three-phase permanent magnet synchronous motor(DTP-PMSM)/sensorless control/saliency effect/synchronous sampling分类
信息技术与安全科学引用本文复制引用
曲硕,高强,李睿..基于基波PWM激励和简化电流斜率测量的多相永磁同步电机转子位置估测技术[J].电机与控制应用,2023,50(12):10-20,11.基金项目
国家自然科学基金(51477101)National Natural Science Foundation of China(51477101) （51477101）
