Sensorless control strategy for salient-pole PMSM based on extended EMF in rotating reference frame

This paper presents a novel sensorless control strategy for a salient-pole permanent-magnet synchronous motor (PMSM). A new model of a salient-pole PMSM using an extended electromotive force (EMF) in the rotating reference frame is utilized to estimate both position and speed. The extended EMF is es...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2002-07, Vol.38 (4), p.1054-1061
Main Authors: Morimoto, S., Kawamoto, K., Sanada, M., Takeda, Y.
Format: Article
Language:English
Subjects:
Control systems
Design engineering
Electric potential
EMF
Estimation error
Force sensors
Industry Applications Society
Observers
Optical noise
Optical sensors
Position errors
Rotating
Sensorless control
Shafts
Stators
Strategy
Synchronous motors
Voltage
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Summary:This paper presents a novel sensorless control strategy for a salient-pole permanent-magnet synchronous motor (PMSM). A new model of a salient-pole PMSM using an extended electromotive force (EMF) in the rotating reference frame is utilized to estimate both position and speed. The extended EMF is estimated by a least-order observer, and the estimation position error is obtained from the extended EMF. Both estimated position and speed are corrected so that the position error becomes zero. The proposed system is very simple and the design procedure is easy and clear. Several experimental drive tests are demonstrated and the experimental results show the effectiveness of the proposed sensorless control system.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2002.800777