Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.2 P.83-89

http://doi.org/10.1631/jzus.2005.A0083


Influence of DSP controller on performance of a permanent magnet brushless AC drive in flux-weakening mode


Author(s):  Z.Q. Zhu,Y.F. Shi,D. Howe

Affiliation(s):  1. . Department of Electronic & Electrical Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, UK

Corresponding email(s):   Z.Q.Zhu@sheffield.ac.uk

Key Words:  Brushless drive, DSP, Electrical machine, Flux-weakening, Oscillation, Quantisation


ZHU Z.Q., SHI Y.F., HOWE D.. Influence of DSP controller on performance of a permanent magnet brushless AC drive in flux-weakening mode[J]. Journal of Zhejiang University Science A, 2005, 6(2): 83-89.

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Abstract: 
The flux-weakening performance of a permanent magnet brushless AC drive was investigated using both floating-point and fixed-point DSP controllers. A significant current oscillation was observed when the drive was operated at high-speed in the flux-weakening mode with the fixed-point DSP. The investigation showed that this was due to the on-line compensation of the winding resistance voltage drop and quantisation errors associated with the fixed-point architecture of the DSP. A simple look-up table scheme is proposed to eliminate the oscillation and to achieve extended flux-weakening capability.

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Full Text:   <5279>

CLC number: TN99

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 0000-00-00

Cited: 0

Clicked: 9653

Citations:  Bibtex RefMan EndNote GB/T7714

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