基于双三相永磁同步电机的EPS系统低速段无位置传感器控制  被引量:4

Position Sensorless Control of EPS System at Low Speed Based on Dual Three-Phase Permanent Magnet Synchronous Motor

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作  者:周中坚[1] 张成宝[1] ZHOU Zhongjian;ZHANG Chengbao(Technology Center of Shanghai Automotive Group Co.,Ltd.,Shanghai 201804,China)

机构地区:[1]上海汽车集团股份有限公司技术中心

出  处:《电机与控制应用》2019年第12期99-104,共6页Electric machines & control application

摘  要:在双三相永磁同步电机(PMSM)电动助力转向(EPS)系统低速段无位置传感器冗余控制中,传统高频脉振电压注入法依赖于电机凸极效应,因而存在位置相关信号的信噪比很小的固有问题。从α-β两相静止坐标系提取高频电流响应信号,直接调制静止两相高频电流,使位置角估算只与直轴电感值相关。将该方法用于饱和凸极性较小的表贴式双三相PMSM。通过仿真和试验验证了所提方法的有效性和正确性。In the low-speed sensorless redundant control of dual three-phase permanent magnet synchronous motor(PMSM)electric power steering(EPS)system,there was an inherent problem that the signal-to-noise ratio of the position-dependent signal was small due to the salient effect of the motor for the conventional strategy based on high-frequency pulsating voltage injection method.To solve this problem,the high-frequency current response was extracted from theα-βstationary reference frame,and theα-βhigh-frequency current modulation was directly applied,so that the position angle estimation was only related to the direct-axis inductance value.This method was applied to a surface-mounted dual three-phase PMSM with a small saturation polarity.The effectiveness and correctness of the proposed method were verified by simulation and experiment.

关 键 词:双三相永磁同步电机 电动助力转向 无传感器控制 高频脉振电压注入 凸极效应 

分 类 号:TM301.2[电气工程—电机]

 

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