基于高频脉冲注入法的开关磁阻电机转子初始位置判定研究  

Initial position judgment of switched reluctance motor's rotor based on high frequency pulse injection

作　　者：张懿 章玮[1] 姚叔春 ZHANG Yi;ZHANG Wei;YAO Shu-chun(Electrical engineering college,Zhejiang university,Hangzhou 310027,China)

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《机电工程》2018年第7期755-759,共5页Journal of Mechanical & Electrical Engineering

摘　　要：针对传统开关磁阻电机在判断转子初始位置时需要外接霍尔位置传感器,不仅增加了系统硬件成本,同时降低了系统的抗震动性等问题,对基于高频脉冲注入法技术无霍尔位置传感器电机转子初始位置判定进行了研究,提出了基于逐相注入高频脉冲比较三相电流响应幅值的得到初始位置的判定算法,在12/8极1.5 k W三相开关磁阻电机上对该方法的准确性进行了试验。研究结果表明:相比于利用霍尔信号确定初始位置的方法,采用改进后高频注入法的转子初始位置的判定算法精确度上提高了一倍,且从静止起动到初始给定转速过程中无反转或其他过渡过程,可实现电机的平滑起动。In order to solve the problems of the traditional switched reluctance motor needs to install the hall position sensor to determine the initial position of the rotor,which not only increases the cost of the system hardware,but also reduces the anti-seismic activity of the system. no hall position sensor with high frequency pulse injection technique for initial rotor position judgment is studied,the improved high frequency pulse wasproposed based on phase-phase pulse injection. The initial position judgment algorithm was obtained by comparison of three phase current response amplitude. The accuracy of this method was tested on a 12/8-1. 5 k W three-phase switched reluctance motor. The results indicate that comparing with the way which use hall signal,the improved high frequency injection method is more accurate upon the determination of the initial position,there are no reversal or other transition process in process of rapid starting from 0 to the initial given speed. the smooth starting of motor can be realized.

关 键 词：开关磁阻电机 无位置传感器技术 高频脉冲注入 初始位置判断 

分 类 号：TM352[电气工程—电机] TP24[自动化与计算机技术—检测技术与自动化装置]