Design and simulation of three phase matrix converter for brushless DC motor

Abstract

This paper deals with a three phase matrix converter which has received considerable attention in recent years. The three phase matrix converter was designed in such a way to provide sinusoidal input current. The brushless DC motor used has trapezoidal back EMF and it was supplied with rectangular stator currents. The same has been simulated and results were analyzed. It is to be noted that the conventional converters with DC-link requires two stages of conversion, whereas a matrix converter, in a single stage converts AC to AC. Because of its appealing operational characteristics, it can be employed for driving brushless DC motor. By employing matrix converter the ac source current becomes nearly sinusoidal and total harmonic distortion gets very much reduced.