Parameter-Free Model Predictive Control of Five-Phase PMSM Under Healthy and Inter-Turn Short-Circuit Fault Conditions

Yijia Huang, Wentao Huang (), Keyang Ru and Dezhi Xu
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Yijia Huang: School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, China
Wentao Huang: School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, China
Keyang Ru: School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, China
Dezhi Xu: School of Electrical Engineering, Southeast University, Nanjing 210096, China

Energies, 2025, vol. 18, issue 17, 1-19

Abstract: Model predictive control offers high-performance regulation for multiphase drives but is critically dependent on the accuracy of mathematical models for prediction, making it vulnerable to parameter mismatches and uncertainties. To achieve parameter-independent control across both healthy and faulty operations, this paper proposes a novel dynamic mode decomposition with control (DMDc)-based model predictive current control (MPCC) scheme for five-phase permanent magnet synchronous motors. The core innovation lies in constructing discrete-time state-space models directly from operational data via the open-loop DMDc identification, completely eliminating reliance on explicit motor parameters. Furthermore, an improved fault-tolerant strategy is developed to mitigate the torque ripple induced by inter-turn short-circuit (ITSC) faults. This strategy estimates the key fault characteristic, the product of the short-circuit ratio and current, through a spectral decomposition of the AC component in the q-axis current variations, bypassing the need for complex parameter-dependent observers. The derived compensation currents are seamlessly integrated into the predictive control loop. Experimental results comprehensively validate the effectiveness of the proposed framework, demonstrating a performance comparable to a conventional MPCC under healthy conditions and a significant reduction in torque ripple under ITSC fault conditions, all achieved without any prior knowledge of motor parameters or the retuning of controller gains.

Keywords: multiphase drives; permanent magnet synchronous machine; model predictive control; fault-tolerant control; inter-turn short-circuit (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: 2025
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