Abstract
This paper presents a single switch non-isolated DC-DC converter with high voltage gain capability for solar photovoltaic (PV) applications. The proposed converter is synthesized from passive switched inductor (SI) and switched capacitor (SC) topologies and integrated with an additional voltage boost capacitor to enhance the voltage gain. Due to the converter structure and adopted gain extension technique, the voltage stress on the switch and three diodes is 50% of the output voltage, while the remaining diodes experience a voltage stress of only 25% of the output voltage. Experimental results obtained from a 34 V/380 V, 200 W prototype converter validate the proposed concept, adopted design procedure and illustrates the fact that the proposed converter operates at a full load efficiency of 93%. Further, the proposed converter provides better component utilization compared to some existing converters.
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