This dissertation work proposes a solar powered boost converter fed Brushless DC (BLDC) drive system for controlling speed at different variation of load using the fuzzy tuned PID controller. The Boost converter used for Maximum Power Point Tracking (MPPT) is chose because of the advantages of continuous and low ripple in the output current. The Boost converter is controlled by Perturbing and Observing Maximum Power Point Tracking (P & O-MPPT) algorithm results in soft starting of the BLDC motor. A fundamental switching frequency of the Voltage Source Inverter (VSI) is accomplished with the electronic commutation of the BLDC motor, thereby eliminating the VSI losses caused owing to the high frequency switching. The proposed drive is designed for various application considering the dynamic operating conditions. For a constant speed control of BLDC motor a PID tuned fuzzy controller is used with torque and phase current as load changing parameters. The desired speed is achieved by the proper tuning of gains of PID controller using fuzzy controller.