DSP-Based Control of Sensorless IPMSM Drives for Wide-Speed-Range Operation

A position sensorless control strategy of an interior permanent magnet synchronous motor (IPMSM) drive based on a digital signal processor (DSP) is proposed. To achieve sensorless wide-speed-range operation, a hybrid position estimation strategy combining the high frequency (HF) signal injection met...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2013-02, Vol.60 (2), p.720-727
Main Authors: Wang, Gaolin, Yang, Rongfeng, Xu, Dianguo
Format: Article
Language:English
Subjects:
Digital control
Digital signal processing
Hafnium
interior permanent magnet synchronous motor (IPMSM) drive
Observers
position sensorless
Rotors
Sensorless control
Stators
wide-speed-range operation
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Summary:A position sensorless control strategy of an interior permanent magnet synchronous motor (IPMSM) drive based on a digital signal processor (DSP) is proposed. To achieve sensorless wide-speed-range operation, a hybrid position estimation strategy combining the high frequency (HF) signal injection method with the electromotive force (EMF)-based method is presented. At low-speed range, an HF voltage signal is injected, and a rotor position observer is designed to improve the robustness to the load disturbance. At middle- and high-speed ranges, a sliding-mode observer based on the extended EMF of IPMSM is designed for sensorless operation. Moreover, during the switch-over area, the two position estimation methods are both enabled for the sensorless control. A software phase-locked loop and a dead-time compensation strategy are adopted to improve the position estimation accuracy. The experimental results demonstrate the feasibility of the control strategy with a sensorless IPMSM drive based on a DSP.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2012.2205360