M.Anbarasan, K.Latha
Fuel cell as a renewable energy source is considered to be one of the most promising sources of electrical power. The characteristics of fuel cell is such that the DC power extracted from it is at low voltage level, this paper proposes a prototype of a power electronics based fuel cell emulator. It can effectively replace a real electrochemical fuel cell stack. The power stage of this new fuel cell emulator consists of a dc-to-dc buck converter. The emulator interfaced with boost converter and simulated using MATLAB/SIMULINK. The fuel cell emulator performance was evaluated for changes in fuel flow rate and load, and the simulation matched with the experimental results. In this thesis a new MPPT algorithm is proposed, the step size is automatically tuned according to operating point and it is eventually tuned to zero.
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