High step-up multi input-multi output DC-DC converter with high controllability for battery charger/EV applications

In this study, a new multi input-multi output (MIMO) high step-up DC-DC converter is proposed for battery charger applications. Continuous input current and capability of using several renewable energy sources with different voltage-current characteristics are the main advantages of it. High voltage gain and low power losses on semiconductors are the other advantages of the proposed topology. In addition, the duty cycle of each input source is independent of other sources. The proposed converter has soft-switching on some power diodes which leads to increasing the overall efficiency of the proposed topology. A laboratory prototype of the proposed topology in 12V-12 V/430 W is built and tested. The experimental results are verifying the proper performance of the proposed topology and confirm the theoretical analysis.