Six-Phase Induction Machines: State of the Art on Design, Modeling, Control and Diagnosis

This review paper provides an overview of recent advancements in the design, modeling, control, and diagnosis techniques of six-phase induction machines. With an increasing focus on multiphase machines for various applications, the study highlights key developments in six-phase induciton machines, including innovations in design methodologies, advancements in modeling techniques, novel control strategies, and emerging diagnosis approaches. By synthesizing findings from recent research, this paper aims to offer insights into the current state of the field and inspire further exploration and refinement of methodologies for optimizing the performance and reliability of six-phase induction machines.

I. Introduction

Multiphase machines, offering enhanced fault tolerance, greater control flexibility, and reduced torque ripples, have garnered significant interest across industries in recent years, particularly in automotive, aerospace, and green power systems where reliability is paramount [1]. Among these, six-phase induction machines (6PIMs) have emerged as a notable alternative to their three-phase counterparts, boasting similar winding configurations and the ability to function as three-phase machines owing to the presence of phases with 120° phase displacement. Two main topologies, symmetrical and asymmetrical, characterize 6PIMs, each with distinct advantages such as lower torque pulsation in asymmetrical designs and reduced copper losses in symmetrical configurations under open-phase faults [2], [3]. This paper delves into the design, modeling, control, and diagnosis aspects of 6PIMs, addressing recent advancements and insights in this field.