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Electronics 2018, 7(2), 14; https://doi.org/10.3390/electronics7020014

Extended Kalman Filter Based Sliding Mode Control of Parallel-Connected Two Five-Phase PMSM Drive System

1
Department of Electrical Engineering, LGEER laboratory, U.H.B.B-Chlef University, Chlef 02000, Algeria
2
Laboratoire de Génie Électrique, Faculté de Technologie, Université de M’Sila, M’Sila 28000, Algeria
3
Department of Energy Technology, Aalborg University, 6700 Esberg, Denmark
4
Department of Electrical Engineering Qatar University, Doha, Qatar
*
Author to whom correspondence should be addressed.
Received: 19 December 2017 / Revised: 16 January 2018 / Accepted: 19 January 2018 / Published: 26 January 2018
(This article belongs to the Special Issue Applications of Power Electronics)
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Abstract

This paper presents sliding mode control of sensor-less parallel-connected two five-phase permanent magnet synchronous machines (PMSMs) fed by a single five-leg inverter. For both machines, the rotor speeds and rotor positions as well as load torques are estimated by using Extended Kalman Filter (EKF) scheme. Fully decoupled control of both machines is possible via an appropriate phase transposition while connecting the stator windings parallel and employing proposed speed sensor-less method. In the resulting parallel-connected two-machine drive, the independent control of each machine in the group is achieved by controlling the stator currents and speed of each machine under vector control consideration. The effectiveness of the proposed Extended Kalman Filter in conjunction with the sliding mode control is confirmed through application of different load torques for wide speed range operation. Comparison between sliding mode control and PI control of the proposed two-motor drive is provided. The speed response shows a short rise time, an overshoot during reverse operation and settling times is 0.075 s when PI control is used. The speed response obtained by SMC is without overshoot and follows its reference and settling time is 0.028 s. Simulation results confirm that, in transient periods, sliding mode controller remarkably outperforms its counterpart PI controller. View Full-Text
Keywords: five-phase permanent magnet synchronous machine; five-leg voltage source inverter; multiphase space vector modulation; sliding mode control; extended Kalman filter five-phase permanent magnet synchronous machine; five-leg voltage source inverter; multiphase space vector modulation; sliding mode control; extended Kalman filter
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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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Kamel, T.; Abdelkader, D.; Said, B.; Padmanaban, S.; Iqbal, A. Extended Kalman Filter Based Sliding Mode Control of Parallel-Connected Two Five-Phase PMSM Drive System. Electronics 2018, 7, 14.

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