Design of a new soft switching high step-up converter with high voltage gain

In this paper a new zero voltage switching high step-up converter with an active clamp circuit is proposed. The active clamp circuit not only absorbs the voltage surge across switches at turn off instance due to leakage inductance,but also provides soft switching condition for all the semiconductor elements. Implementation of control circuit is very simple since the converter is PWM controlled and the auxiliary switches turn on are complementary with respect to main switches. In the proposed converter, one coupled inductor is applied in conventional high step-up converter for increasing converter gain. The simulation results are presented, and modeling the circuit by using MATLAB/SIMULINK plat form.