Journals Proceedings

Abstract

This paper illustrates the working of a BLDC motor in the forward motoring and reverse regeneration mode. It proposes a simple method of braking with energy regeneration for a brushless dc motor. This action is accomplished through the inversion of the signals given by the position sensor. When the brake signal is applied, the stator field is reversed 180 electric degrees compared with the presented method. The proposed solution simultaneously achieves dual goals - electric brake and the energy regeneration without using additional converter, ultra-capacitor, or complex winding-changeover technique. Charging of the battery has been understood by looking into the charging current and voltage waveform of the capacitor connected in parallel to the source. The speed control model of the BLDC motor is built and simulated in this paper and different parameters like speed, torque, phase currents, hall sensors output etc has been analyzed. The motor model built in PSIM systems is then tied into the MATLAB model with the help of a SIMCOUPLER tool.