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Energies 2016, 9(12), 1084; doi:10.3390/en9121084

Sensorless Control of Interior Permanent Magnet Synchronous Motor in Low-Speed Region Using Novel Adaptive Filter

1,†
,
2,†,* and 2
1
School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
2
School of Automation, Huazhong University of Science and Technology, Wuhan 430074, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: David Wood
Received: 23 August 2016 / Revised: 14 December 2016 / Accepted: 15 December 2016 / Published: 18 December 2016

Abstract

This paper presents a novel position and speed estimation method for low-speed sensorless control of interior permanent-magnet synchronous machines (IPMSMs). The parameter design of the position and speed estimator is based on the sampled current rather than the motor electrical parameters. The proposed method not only simplifies the parameter design, it enables the estimator to work normally even in the condition that the electrical parameters are uncertain or varied. The adaptive filters are adopted to extract the desired high frequency current. The structure and corresponding transfer function are analyzed. To address the shortage of insufficient stop-band attenuation, the structure of the adaptive filter is modified to provide suitable bandwidth and stop-band attenuation simultaneously. The effectiveness of the proposed sensorless control strategy has been verified by simulations and experiments. View Full-Text
Keywords: interior permanent magnet synchronous motor (IPMSM); sensorless control; adaptive filter; speed estimation interior permanent magnet synchronous motor (IPMSM); sensorless control; adaptive filter; speed estimation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Tian, L.; Zhao, J.; Sun, J. Sensorless Control of Interior Permanent Magnet Synchronous Motor in Low-Speed Region Using Novel Adaptive Filter. Energies 2016, 9, 1084.

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