A new ZVS-ZCS multilevel DC/DC converter with current fed dual active circuits for traction applications

In this paper, a new ZVS-ZCS Multilevel DC/DC converter with phase shift control for traction applications has been proposed. The proposed converter is integrated with current fed dual active circuits to the phase shift controlled multilevel converter, which provides the features zero voltage switching for outer switches and zero current switching condition for all switches and transformer primary current and output currents keep constant. The detailed principle of operation was described; To verify theoretical analysis, the simulation results presented for the flying capacitor based and diode clamped multilevel converters.