Abstract
High gain dc-dc boost chopper are rapidly expanding substituting power converters for Photo Voltaic (PV) appliances. Investigators are creating different schemes to accomplish greater voltage gain, low ripple, switch stress, decreases the cost of converters and reduces the fluctuations at the photovoltaic operation point. This paper proposes a two-stage converter for standalone solar photovoltaic (PV) water pumping drive system. High Gain (HG) cell combined with DC-to-DC boost converter. This compound converter provides dc voltage fed asynchronous motor drive system. The utilisation of three-phase asynchronous motor introduces a superior solution to the industrial DC motor-based water pumping scheme. A three-phase asynchronous motor connected to voltage source inverter (VSI), which in turning throws the centrifugal pump. The scheme comprises of a PV array, high-gain DC-DC chopper, 3-Phase Voltage Source Inverter (VSI), motor and a pump. Incremental conductance method used to obtain maximum power from a solar PV structure. Indirect Field Oriented Control of an asynchronous motor is employed to achieve soft starting of the motor. The scheme setup is simulated using MATLAB/Simulink. The proposed system is tested experimentally. The results accomplished demonstrate the scheme fitness for PV water pumping.