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Decoupling and sensorless vector control scheme for single-phase induction motor drives

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5 Author(s)
R. Z. Azzolin ; Federal University of Rio Grande - FURG, Rio Grande, Brazil ; T. A. Bernardes ; R. P. Vieira ; C. C. Gastaldini
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Vector control has improved the performance and energy efficiency in SPIM drives. However, high current and torque pulsations are produced by winding asymmetry of SPIM. This paper proposes a decoupling scheme to reduce the current and torque pulsations and improve the performance of vector control. A stator current observer is used to estimate the coupling signals, which are compensated by control law. This method is an alternative to improve the performance of single-phase induction motor used in hermetic refrigeration systems. The thermal efficiency of refrigeration system can be improved by the variable speed operation and the advantages of robustness and low-cost of single-phase induction motor can be maintained.

Published in:

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

Date of Conference:

25-28 Oct. 2012