Adaline-Based Control Schemes for Non-Sinusoidal Multiphase Drives–Part I: Torque Optimization for Healthy Mode

Duc Tan Vu, Ngac Ky Nguyen, Eric Semail and Hailong Wu
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Duc Tan Vu: University Lille, Arts et Métiers Institute of Technology, Central Lille, Junia, ULR 2697–L2EP, F-59000 Lille, France
Ngac Ky Nguyen: University Lille, Arts et Métiers Institute of Technology, Central Lille, Junia, ULR 2697–L2EP, F-59000 Lille, France
Eric Semail: University Lille, Arts et Métiers Institute of Technology, Central Lille, Junia, ULR 2697–L2EP, F-59000 Lille, France
Hailong Wu: University Lille, Arts et Métiers Institute of Technology, Central Lille, Junia, ULR 2697–L2EP, F-59000 Lille, France

Energies, 2021, vol. 14, issue 24, 1-22

Abstract: More degrees of freedom not only enable multiphase drives to be fault-tolerant but also allow non-sinusoidal electromotive forces (NS-EMFs) in high-quality vector control. NS-EMFs lead to lower costs of design and manufacturing of electrical machines. However, the presence of multi-harmonics in NS-EMFs possibly generates pulsating torque in both healthy and faulty conditions of multiphase drives. To facilitate the use of NS-EMFs, this two-part study proposes control schemes to adaptively improve torque quality of multiphase drives in dealing with multi-harmonics of NS-EMFs. The proposed schemes are based on a simple but effective type of artificial intelligence, Adaptive Linear Neuron (Adaline). The knowledge of multiphase drives including the harmonic ranks of NS-EMFs and the rotor position is exploited to design the online-trained optimal Adalines. The first part of this study is to propose a control scheme using an Adaline for healthy mode with high-quality torque regardless of numerous harmonics in NS-EMFs. The second part of this study introduces a control scheme using another Adaline for open-circuit faults. The proposed schemes are numerically and experimentally validated on a seven-phase permanent magnet synchronous machine (PMSM) possessing a high total harmonic distortion (THD = 38%) of NS-EMFs.

Keywords: multiphase machine; seven-phase machine; non-sinusoidal electromotive force; multi-harmonic; torque ripple elimination; adaptive linear neuron (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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