ABSTRACT
A high-efficiency isolated bidirectional AC-DC converter is proposed for a 380-V DC power-distribution system to control bidirectional power flow and to improve its power-conversion efficiency. In addition, design and control methodology of a bidirectional full-bridge CLLC resonant converter is suggested for the galvanic isolation of the DC distribution system. A dead-band control algorithm for the bidirectional DC-DC converter is developed to smoothly change power-conversion directions only by the use of output voltage information. Since most of the output of renewable energy sources is DC, the DC distribution system is mostly used in home appliances because it merges many renewable energy resources. The isolated bidirectional AC-DC converter is proposed for the 380-V DC power-distribution system to control the bidirectional power flow and to improve its power-conversion efficiency. In addition to future works, the isolated bidirectional AC-DC converter is proposed for the high voltage DC power-distribution system to control the bidirectional power flow and to improve its power-conversion efficiency.
