A family of non-isolated three-port converters based on H-bridge

In order to satisfy the charging and discharging circuits of energy storage element (ESE), a family of non-isolated three-port converter (TPC) by embedding a ESE-centric H-bridge cell into the classic buck, boost and buck/boost converters are proposed. There are two types of embedding method: (1) Without connecting with component of the classic converter, H-bridge is inserted into the classic converter directly. (2) Connected with component of the classic converter in a specific way, the H-bridge is connected with the rest part of the classic converter. The operating mode and port voltage restriction of the obtained TPCs are analyzed and summarized, which features high integration and compact size. Experimental results of one of the proposed TPCs, named LP-3-buck/boost, have been presented to verify the analysis results.

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