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Rotor-position detection in permanent-magnet wheel motor to ensure smooth startup from standstill

Qu, K; Li, W; Xu, G; Mei, TX; Cao, J; Zhang, Y; Hu, H

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Authors

K Qu

W Li

G Xu

J Cao

Y Zhang

H Hu



Abstract

In this paper, an innovative rotor-position-detection method for a permanent-magnet wheel motor (PMWM) that operates from standstill to low speed is presented. The neutral voltage, which is sensed through phaseshifted pulse width modulation, overcomes the limitations of the conventional back electromotive force (EMF)-based position-detection method, which is more suitable for high-speed operation. In addition, a technique that ensures a transition between the two position-detection methods is presented to cover the full speed range. Computer simulations are employed to design and assess the neutral-voltage-based and EMF-based position-detection methods. The results of the position detection and angle error are presented starting from standstill to low speed. A step current (iq) corresponding to motor torque demand is applied for the starting process in the two position-detection methods. The experimental studies of the new position-detection method are conducted. The method is successfully applied to drive a 60-kW PMWM that operates from standstill to high speed. This demonstrates the effectiveness and performance of the presented method.

Citation

Qu, K., Li, W., Xu, G., Mei, T., Cao, J., Zhang, Y., & Hu, H. (2019). Rotor-position detection in permanent-magnet wheel motor to ensure smooth startup from standstill. IEEE Access, 7, 54179-54191. https://doi.org/10.1109/ACCESS.2019.2912445

Journal Article Type Article
Acceptance Date Apr 22, 2019
Online Publication Date Apr 22, 2019
Publication Date Apr 22, 2019
Deposit Date Apr 25, 2019
Publicly Available Date Apr 25, 2019
Journal IEEE Access
Publisher Institute of Electrical and Electronics Engineers
Volume 7
Pages 54179-54191
DOI https://doi.org/10.1109/ACCESS.2019.2912445
Publisher URL https://doi.org/10.1109/ACCESS.2019.2912445
Related Public URLs https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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