Study on establishment of electric equivalent model for development of fuel cell emulator

Recently, fuel cells prevail around the world. And, fuel cell emulator is needed when we design a power converter system including the fuel cells. We study new emulator which combined two types of electrical models, Model A and Model B. Model A represents low-frequency region nonlinear characteristics realized by software controlled voltage source and model B represents high-frequency region linear characteristics realized by hardware circuit. This paper proposes constitution method of model that combines. And, we observe and compare the output voltage waveforms of the real fuel cell and the proposed model when the power converter is connected and operated.