High Efficiency DC-DC Converter for Low Voltage PV Sources

Abstract: As far as renewable energy is concerned solar photovoltaic means of energy production plays a major role. Since sun’s energy is available in abundant not completely its source is utilized by the photovoltaic cells. So, efficiency of the energy conversion scheme should be high. Hence a high-efficiency dc–dc converter is proposed for low-voltage photovoltaic sources. The proposed converter boosts up the DC voltage with high voltage gain and high efficiency. The proposed converter uses a transformer-less adjustable voltage quadrupler dc–dc converter with high-voltage transfer gain and reduced semiconductor voltage stress is proposed with an input-parallel output-series configuration for providing a much higher voltage gain without adopting an extreme large duty cycle.

Keywords: DC-DC converter, Photovoltaic (PV), Quadrupler.