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Vol. 169, Issue 4, April 2014, pp. 9-17

 

Bullet

 

Speed Sensorless Control of Permanent Magnet Synchronous Motors
in Mine Electric Locomotive Drive
 

1 Yudong LI, 1 Xiaobang YANG and 2 Tianyu ZHANG

1 School of Electrical Engineering & Automation Henan Polytechnic University (HPU), P. R. China
2 School of Mechanical and Electrical Engineering, Henan Vocational College of Industry and Information Technology, 801 Bilian Avenue, Jiaozuo, Henan, 454000, P. R. China
1 Tel.: 0391-3987592, fax: 0391-3987596

E-mail: lyd@hpu.edu.cn

 

Received: 23 January 2014 /Accepted: 7 March 2014 /Published: 30 April 2014

Digital Sensors and Sensor Sysstems

 

Abstract: This paper presents a novel sensorless control method of permanent magnet synchronous motors a low speed based on a high-frequency voltage signal injection. The approach superimposes a persistent HF voltage signal into the estimated d-axis to get the rotor position error angle-related signal by detecting the corresponding voltage response and current response. Then the rotor position and motor speed are obtained. Theoretical analysis and simulation results demonstrate that the approach can achieve sensorless control of permanent magnet synchronous motors at zero and low speed, ensure good dynamic and static performances, and achieve effective control when applied to servo system. Finally, a test prototype system which used a digital signal processor and space vector pulse width modulation technology has been developed. Experimental results show that the system has better static, the effectiveness and dynamic performance of the adaptive test signals in a sensorless controlled surface-mounted permanent magnet synchronous machines.

 

Keywords: Direct-current line electric locomotive, Variable frequency drive, Voltage signal injection, Permanent magnet synchronous machine (PMSM).

 

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