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Sliding-Mode-Observer-Based Open-Switch Diagnostic Method for Permanent Magnet Synchronous Motor Drive Connected with LC Filter
Open AccessArticle

Sensorless-MTPA Control of Permanent Magnet Synchronous Motor Based on an Adaptive Sliding Mode Observer

1
School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
2
College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
3
School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China
*
Author to whom correspondence should be addressed.
Energies 2019, 12(19), 3773; https://doi.org/10.3390/en12193773
Received: 3 September 2019 / Revised: 29 September 2019 / Accepted: 1 October 2019 / Published: 3 October 2019
(This article belongs to the Special Issue Permanent Magnet Electrical Machines)
Different from the traditional method of the interior permanent magnet synchronous motor (IPMSM), the sensorless maximum torque per ampere (MTPA) control scheme in this paper does not need two observers for rotor position and d-q axis inductances, respectively. It only needs an adaptive sliding mode observer (ASMO) based on the extended flux (EF) to realize double-loop control and MTPA operation simultaneously. The adaptive mechanism of rotor speed is designed to ensure stability of the ASMO. The rotor position and the difference between d-axis and q-axis inductances are obtained from the estimated EF to acquire the MTPA points when the position sensor of the IPMSM is absent. The proposed scheme is realized on a 20kW IPMSM where the sensorless control performance and the MTPA control performance are tested. The effectiveness of the proposed method is verified by the experiment results. View Full-Text
Keywords: permanent magnet synchronous motor; maximum torque per ampere; sensorless; adaptive sliding mode observer; extended flux permanent magnet synchronous motor; maximum torque per ampere; sensorless; adaptive sliding mode observer; extended flux
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MDPI and ACS Style

Ye, M.; Shi, T.; Wang, H.; Li, X.; Xia, C. Sensorless-MTPA Control of Permanent Magnet Synchronous Motor Based on an Adaptive Sliding Mode Observer. Energies 2019, 12, 3773.

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