A double phase-shift control strategy for a full-bridge three-level DC/DC converter
In this paper, a double phase-shift control strategy is proposed for the full-bridge three-level (FBTL) DC/DC converter applied into DC distribution systems with the medium DC bus voltage. By utilizing the proposed control strategy, the voltage change rate dv/dt and voltage stress of the transformer can be effectively reduced, which means that the reliability and EMC of the FBTL DC/DC converter can be improved. The operation principle and performances of the proposed control strategy is analyzed in detail. Finally, the simulation results are presented to verify the proposed control strategy.