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This paper proposes the two phase interleaved non isolated boost converter to achieve high voltage gain for Photovoltaic (PV) application. The high voltage gain of the proposed converter increased by high turns ratio of coupled inductor. By the use of coupled inductor in input side of boost converter voltage stress across the switch reduced. The conduction loss and current stress across the switch are reduced by increasing the number of phase. Hence easy to select the power switch reduced input current ripple and output voltage ripple achieved. The primary leakage inductor energy of coupled inductor utilized efficiently. Each switch is turn on by same frequency with phase difference of 2π/2.The simulation results for non-isolated two phase interleaved high voltage gain boost converter was carried out using MATLAB/SIMULINK. The performance parameters such as voltage gain, input ripple are analyzed for single phase and two phase interleaved boost converter. Simulation results are presented to validate proposed converter.

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