Self-adjusting strategy based on rotating injection for sensorless control of high-power PMSM drives

被引:2
作者
Wang, Xiaofan [1 ]
Fang, Xiaochun [1 ]
Wang, Zhi [2 ]
Zhong, Zhihong [1 ]
Wang, Yizhi [1 ]
Lin, Fei [1 ]
Yang, Zhongping [1 ]
机构
[1] Beijing Jiaotong Univ, Sch Elect Engn, Beijing, Peoples R China
[2] CRRC Qingdao Sifang Rolling Stock Res Inst Co Ltd, Qingdao, Peoples R China
来源
2019 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE 2019 - ECCE ASIA) | 2019年
关键词
Permanent magnet synchronous motor; sensorless control; rotating high-frequency injection; signal extraction; WAVE VOLTAGE-INJECTION; POSITION; IPMSM;
D O I
10.23919/icpe2019-ecceasia42246.2019.8796979
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
As a sensorless control method suitable for permanent magnet synchronous motor (PMSM) at low-speed, rotating high-frequency injection method will face some special problems in high power applications. On the one hand, the low switching frequency limits the injected signal frequency, which is very close to the fundamental frequency. On the other hand, under heavy load conditions, the fundamental current amplitude is several hundred times of the negative sequence current. This will result in difficulty in signal extraction. In this paper, current spectrum is analyzed quantitatively based on the parameters of PMSM drive for rail vehicles, which illustrates the limitations of conventional bandpass filters. A method based on self-adjusting filter is proposed. The negative sequence current is successfully extracted, and the precise rotor position is obtained under the condition of variable speed and variable load. Based on a full-scale test platform the effectiveness of the proposed method is proved.
引用
收藏
页码:718 / 723
页数:6
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