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

Qu, K, Li, W, Xu, G, Mei, TX ORCID:, Cao, J, Zhang, Y and Hu, H 2019, 'Rotor-position detection in permanent-magnet wheel motor to ensure smooth startup from standstill' , IEEE Access, 7 , pp. 54179-54191.

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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.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: IEEE Access
Publisher: IEEE
ISSN: 2169-3536
Related URLs:
Depositing User: TX Mei
Date Deposited: 25 Apr 2019 10:33
Last Modified: 16 Feb 2022 01:49

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