Four quadrant operation of BLDC motor drive using a non inverting buck boost converter

Brushless DC motors are widely used in many applications such as traction, appliances, instrumentation and aerospace. Thus operation of BLDC motor in all four quadrants becomes very essential. Motor is operated in all quadrants of torque-speed plane without any power loss and energy is conserved during the generation period. Using a two switch non-inverting buckboost converter, operating either in buck mode or boost mode by controlling only one switch at a time, all the quadrants of operation is achieved. MATLAB/SIMULINK was used for simulation and experimental setup was achieved successfully with energy storage.