Hardware Implementation of Adaptive Constant voltage MPPT algorithm for a PV array fed BLDC motor for air conditioning applications

The solar energy available on earth’s surface is abundant in nature, but it is intermittent in nature and depending various parameters like temperature, location and insolation. The conversion efficiency of photovoltaic modules is very low. The present work focuses on developing a Adaptive Constant voltage (ACV) Tracking algorithm Photovoltaic fed 3-phase inverter with brushless dc motor as load. The present work focus on conversion efficiency, tracking speed of Maximum power point(MPP) and to extract maximum power from solar panels, maintain constant voltage for 3-phase inverter with BLDC motor load for sudden changes in environmental conditions. The functioning of proposed MPPT algorithm is tested on a laboratory scaled prototype. The hardware test setup consists of Photovoltaic modules, DC-DC converter, 3-phase intelligent power module inverter and Digital signal Processor(DSP). The simulation and experimental results from the hardware test setup are presented and discussed. The Proposed algorithm performance is stable and good. The tracking speed is increased and oscillations in the system is reduced under dynamic weather changes.