Research on transient processes of six phase induction motors

Dynamic models for investigation transient processes of six phase induction motors are presented in this dissertation.

The thesis layout consists of introduction, three main chapters, conclusions, bibliography and list of publications.

The introduction reveals the investigation problem, importance of the work and the object of research as well as describes the purpose and tasks of the paper, research methodology, scientific novelty, the practical significance of obtained results and defended statements. The author’s publications on the subject of the defended dissertation, offering the material of made presentations in conferences and the structure of the dissertation are presented at the end of introduction.

The advantages of multiphase motors over conventional three phase are presented in the first chapter. The applications with multiphase motors are reviewed. The types of six phase induction motors are presented. The mathematical model of six phase induction motor are composed. The control methods of six phase induction motors are reviewed. At the end of the chapter, conclusions and tasks for the dissertation are formulated.

The second chapter is dedicated for methodology to develop two types mathematical models of six phase induction motor. First of them is composed according to stator and rotor current expressions and second one according to stator and rotor flux expressions. Fast prototype systems with simulation models are reviewed. At the end of the chapter, conclusions are formulated.

Simulation and experimental results of six phase induction drive are presented in the third chapter. Two types of six phases motor windings connections are proposed: concentrated double layer short pitch coil winding and concentrated double layer full pitch coil winding. The simulation results of six phase induction motor are analyzed. Experimental stand is proposed and results of six phase induction drive experimental investigation are presented. At the end of the chapter, conclusions according to simulation and experimental results are formulated.

The results of the work were presented in nine scientific publications: two –published in journals quoted in Thomson Reuters Web of Science databases, one – in periodic foreign journal, two – in periodic Lithuanian journals, four – in referred international conference materials. Nine reports were presented on the subject in conferences at national and international levels.

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DOI: https://doi.org/10.20334/2250-M