The Unified Topology Construction Method for Basic Non-Isolated Combined-Type DC/DC Converters

Basic non-isolated combined-type DC/DC converters have always played an important role in the field of power electronic converter topology, usually including the three-level DC/DC converters, double-frequency DC/DC converters and interleaving DC/DC converters. At present, the topology construction methods about them are different, and not very uniform. In this paper, from the perspective of unity, the topology construction ideas and processes for the three kinds of basic non-isolated combined-type DC/DC converters above are integrated by combining the basic circuit theory. Thus, a unified topology construction method is proposed by the way of series-connection or parallel-connection between the voltage-type conversion unit and current-type conversion unit. The specific results of topology construction are analyzed and relevant conclusions are also given.