Fuzzy Implementation for Two BLDC Using Three Phase Inverter

N. Saranraj, S. Anitha Sampathkumar

Abstract: This project proposes an implementation which is capable to operate two brushless DC Motors (BLDC) using a three phase inverter and controlled by fuzzy logic method. Conventional parallel connection method used in this application for the single DC voltage applied to both motors can operate only at the same speed and have a high risk of loss of synchronism. On the other hand, the proposed topology can employ the conventional six bridge power module without any modification or addition and operate two motors at the different speeds using the superposition principle. In other inverter topologies, the number of switches increases or implementation of inverter is complicated. The analysis of the proposed system is presented and the control method to independently operate two motors is proposed. It is verified through experimental results.

Keywords: Three Phase Inverter, BLDC Motor, Fuzzy Logic, Matlab