Second Order Hbc Prototype For Front- End Photo voltaic systems

Abstract

Front-end PV system with a 200-W, 35 to 380 V second-orders HBC is designed and hybrid boosting converter (HBC) with collective advantages of regulation capability from its boost structure and gain enhancement from its voltage multiplier structure is proposed in this project. The new converter incorporates a bipolar voltage multiplier, featuring symmetrical configuration, single inductor and single switch, high gain capability with wide regulation range, low component stress, small output ripple and flexible extension. The operation principle, component stress, and voltage ripple are analyzed in this project.Performance, comparison and evaluation with a number of previous single-switch single-inductor converters are provided and the experimental result confirms the feasibility of the proposed converter.