Steady-state characteristics of a novel DC-AC converter for fuel cells

Clean energy system is demanded because of global warming and energy issues. Fuel cells are one of the clean energy sources, and they may be replaced from the fossil fuels. And now, the specifications of DC-AC converter for fuel cells are demanded high efficiency and reduction of the size. This paper proposes a novel DC to AC converter topology for fuel cells. The proposed topology provides the boosted voltage pulse directly to the PWM inverter. As the result, this topology has no large smoothing capacitor. Moreover, this topology is able to achieve zero-voltage-switching (ZVS) of PWM inverter automatically. This paper firstly analyzes the each states of the proposed topology. Secondary, steady-state characteristics of proposed topology are shown by some experience. From the results, the advantage of the proposed topology is mentioned.