Journal of Research in Electrical Circuits and Systems ISSN: 3139-2059 (Online)

Abstract

Multi-phase motor drives, including three-phase, five-phase, and six-phase machines, are increasingly used in electric vehicles, aerospace, industrial automation, and robotics due to their reduced torque ripple, improved efficiency, and fault tolerance. Optimizing multi-phase motor drive circuits involves power electronics design, control strategy selection, thermal management, and harmonics minimization. This paper presents a comprehensive review of multi-phase inverter topologies, modulation techniques, control strategies, and optimization methods. Comparative tables illustrate performance metrics under different configurations. Case studies demonstrate optimization of a five-phase permanent magnet synchronous motor (PMSM) drive with reduced current ripple and improved efficiency. Challenges, such as component stress, EMI, and fault management, are also discussed, along with future trends in high-performance, high-density multi-phase drives.

Keywords: Multi-phase motor drives, PMSM, inverter optimization, torque ripple reduction, fault-tolerant drives, harmonic minimization