Active clamped three-phase isolated boost converter with voltage doubler output for high voltage conversion ratio

A new active clamped three-phase isolated boost converter is proposed for low voltage distributed energy resources. The proposed converter has a parallel input and voltage doubler output structure to obtain the high output voltage from the low voltage source. The three-phase parallel input structure with an interleaved operation provides a high power rating and reduced input current ripple. The high voltage conversion ratio can be easily obtained using the voltage doubler output stage. Moreover, the zero voltage switching (ZVS) is also achieved using an active clamping circuit. The converter operation and prototype design are presented. The experimental results are finally provided to show the validity of the proposed converter scheme.