Research of IMC-fed BLDCM servo system based on fuzzy control

This paper presents a control scheme designed for Brushless DC Motor (BLDCM) drive. The proposed scheme is fed by Indirect Matrix Converter (IMC). The IMC works as an AC-AC power supply for BLDCM. The scheme includes speed servo system and position servo system. Firstly, the advantages and working principles of IMC are introduced, showing that IMC is a superior power converter. Then, the IMCfed BLDCM servo system is designed. The command speed or command position for BLDCM could be tracked accurately and respectively. In the position servo system, a fuzzy P controller is employed as the position regulator. From the simulation results, it is illustrated that IMC-fed BLDCM servo system has satisfed performance of tracking the command speed or command position.