Fuzzy Logic Based-Active Fault Tolerant Control of Speed Sensor Failure for Five-Phase PMSM
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ORIGINAL ARTICLE
Fuzzy Logic Based‑Active Fault Tolerant Control of Speed Sensor Failure for Five‑Phase PMSM Yemna Bensalem1 · Rabeh Abbassi2 · Houssem Jerbi3 Received: 14 May 2020 / Revised: 13 August 2020 / Accepted: 23 September 2020 © The Korean Institute of Electrical Engineers 2020
Abstract The present study seeks to investigate the problem of fault tolerant speed control of the five-phase Permanent Magnet Synchronous Motor (PMSM) in the presence of speed sensor fault. Indeed, the sensors which are the most sensitive elements play a significant role in the closed loop control. In this context, an active Fault Tolerant Control (FTC) is developed based on fuzzy controller. Using the Sliding Mode Observer (SMO), the reconfiguration scheme which alternates between the measured speed value and the estimated one is proposed during failure occurrences so as to preserve the best control performance. The five-phase PMSM is monitored by a fuzzy logic controller to reduce disturbances that can occur under fault conditions. The two techniques which are used to illustrate consistency in the proposed approach are the following: the sliding mode with encoder or without encoder-based control and the fuzzy logic control for efficient decision sent to the field-oriented control. Simulation tests, in terms of the measured and the estimated speed responses, have been carried out on the five phase PMSM drive. The results demonstrate that the proposed FTC scheme can validate the proposed FTC strategy and guarantee service continuity. Keywords Five-phase PMSM · Sensor fault · Fuzzy logic control (FLC) · Fault tolerant control (FTC) · Sliding mode observer (SMO)
1 Introduction The five-phase PMSMs have actually gained considerable interest in various fault tolerant systems such as electric vehicles, wind power generators, robotics and aerospace [1–3]. In fact, the torque oscillations are reduced by * Yemna Bensalem [email protected] Rabeh Abbassi [email protected] Houssem Jerbi [email protected] 1
High Institute of Industrial Systems of Gabès (ISSIG), MACS LR16ES22, University of Gabès, Gabès 6072, Tunisia
2
Department of Electrical Engineering, College of Engineering, University of Ha’il, Hail 1234, Kingdom of Saudi Arabia
3
Department of Industrial Engineering, College of Engineering, University of Ha’il, Hail 1234, Kingdom of Saudi Arabia
increasing the number of phase [4, 5]. Besides, the fivephase PMSM can operate under the loss of one or two phases. For these reasons, this machine is increasingly carried out in drive control systems working in rough environment [6, 7]. Multi-phase drives have many benefits over the threephase drives such as: decreasing the current per phase without growing the voltage per phase, reducing the oscillations currents, reducing the magnitude and increasing the frequency of torque pulsations, and decreasing the dc-link current harmonics and so improving the whole effectiveness [7]. In this respect, several research works [8–10] revealed that increasing the number of pha
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