Modified Sliding Mode Observer-based Direct Torque Control of Six-phase Asymmetric Induction Motor Drive

doi:10.23919/CJEE.2023.000026

Chinese Journal of Electrical Engineering ›› 2023, Vol. 9 ›› Issue (3): 111-123.doi: 10.23919/CJEE.2023.000026

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Modified Sliding Mode Observer-based Direct Torque Control of Six-phase Asymmetric Induction Motor Drive

Krunal Shah, Abid Mansuri, Rakesh Maurya^*

Department of Electrical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat 395007, India

Received:2022-08-10 Revised:2023-05-04 Accepted:2023-06-06 Online:2023-09-25 Published:2023-08-30
Contact: *E-mail: rmaurya@eed.svnit.ac.in
About author:Krunal Shah (Student Member, IEEE) received B.E. and M.Tech. degrees in Electrical Engineering from Gujarat Technological University, Gujarat, India, in 2016 and 2019, respectively. He is currently working toward a Ph.D. at the Department of Electrical Engineering, Saradar Vallabhbhai National Institute of Technology, Surat, Gujarat, India. His research interests include electric drives, multiphase induction motor drives, and power electronics converters for drive applications.
Abid Mansuri (Student Member, IEEE) is a Ph.D. Research Scholar in the Department of Electrical Engineering of Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat, India. He has a master’s degree in Electrical Engineering with a specialization in Power Electronics (Gold Medal) from Gujarat Technological University (GTU), Surat, India in 2018 and 2020, respectively. His research interests include multiphase induction motors and power electronics converters for drive applications.
Rakesh Maurya received B.Tech. degree in Electrical Engineering from the Kamla Nehru Institute of Technology, Sultanpur, India in 1998 and M.Tech. degree in Power Electronics and Electric Drives, and Ph.D. in Electrical Engineering from the Indian Institute of Technology Roorkee, Roorkee, India in 2002 and 2014, respectively. He is currently an Associate Professor in the Department of Electrical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat, India. He has published more than 60 SCI/SCIE research papers in journals of international repute, including IEEE Transactions, Institute of Engineering and Technology-United Kingdom and Elsevier, and Taylor & Francis, along with many conference papers. He is also involved in executing sponsored projects in areas of custom power devices to mitigate power quality problems in distribution systems. He has authored six chapters in published books. He has supervised (or is supervising) more than 15 doctoral research scholars and 30 M.Tech. students. His current research areas include the design of switching power converters, high-power factor AC/DC converters, hybrid output converters, improved power quality converters for battery charging applications, power quality problems, advanced electric drives, and applications of real-time simulators for the control of power converters. He is a member of IEEE and a Life Member of the Systems Society of India.

Abstract

Abstract: In this study, a six-phase induction asymmetric induction motor (SPAIM) was examined, whose performance surpasses that of its three-phase counterpart, with regard to the torque density, torque pulsation, fault tolerance, power rating per inverter lag, and noise characteristics. Speed-encoder-less direct torque control (DTC) for SPAIM with virtual voltage vectors (VVVs) and a modified sliding mode observer (MSMO) are described. The SPAIM model was developed using a stationary α-β frame for DTC. The conventional DTC of the SPAIM drive is a simple extension of DTC for a 3-Φ motor drive that yields higher distortion in the stator currents. To mitigate the large amount of distortion in the stator current, VVVs were used to significantly reduce the harmonic content in the stator currents. Furthermore, to overcome the large amount of chattering observed in the case of a traditional sliding mode observer, particularly under low-speed operation, the MSMO was employed to reduce chattering even under low-speed operation. The performance of the proposed observer was verified under all the operating conditions suitable for the propulsion mode of an electric vehicle using Matlab/Simulink, and the results were experimentally validated.

Key words: Direct torque control, multiphase induction motor drive, sliding mode observer, space vector modulation

Krunal Shah, Abid Mansuri, Rakesh Maurya. Modified Sliding Mode Observer-based Direct Torque Control of Six-phase Asymmetric Induction Motor Drive[J]. Chinese Journal of Electrical Engineering, 2023, 9(3): 111-123.

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Modified Sliding Mode Observer-based Direct Torque Control of Six-phase Asymmetric Induction Motor Drive

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