Publications

Abstract : The renewable resources are boundless but they require suitable converters for effectual power transfer. The effortlessly available energy resources are solar and wind energy and they must be utilized properly by boosting the voltage since at low irradiance and low wind speed the voltage gain obtained by the boost converters are low. This work proposes an enhanced DC-DC interleaved boost converter (IBC) for renewable energy system. The comparison of conventional IBC and IBC with voltage multiplier when connected with the solar and wind system is analyzed. The traditional IBC when connected with the renewable sources does not yield the maximum output voltage due to the switching losses and complex control techniques and the same time the proposed converter must not be in complex in control and size. Hence the traditional IBC modified with the additional capacitor and diode improves voltage gain with the reduced voltage stress and multiplying output voltage. When connected with the solar and wind energy systems the input is unstable, so higher stability output voltage of the converter is achieved with the closed loop control for different load conditions. The proposed system is simulated for solar and wind energy systems using MATLAB/Simulink. The voltage gain obtained was 87.5 % higher than the conventional IBC and the evaluation of open loop and closed loop for IBC with voltage multiplier was performed. The interleaved boost converter with the voltage multiplier gives high output voltage which can be used for standalone applications within the agriculture water pumping, high intensity discharge lamps, residential electrification and electric vehicles.