Characteristic analysis of a flux-reversal motor driven by a four-switch converter with a compensated current regulation

Abstract

A 3-phase flux-reversal motor (FRM) driven by a 6-switch converter has been studied for its various merits such as a low inertia, a high efficiency and fault tolerance. However, it is needed to develop the FRM with a 4-switch converter to reduce motor and converter construction costs. Among the many different 4-switch converter topologies, the one with a compensated current regulation base on a novel pulse width modulation (PWM) control technique has been proposed as a good solution. In this paper, we introduce a two dimensional time-stepped voltage source finite-element method (2D-FEM) to analyze the FRM driven by the proposed 4-switch converter. We also compare the characteristics of the FRM when the compensated current regulation is adopted or not. To verify the analysis method and simulated results, the 4-switch converter and the prototype FRM are built and experiments are performed.