Maximum power tracking control for fuel cell systems

This paper proposes a sliding mode control to track the maximum power point of fuel cell power systems using a DC-DC boost converter. The maximum is achieved when the objective function defined as dP/dI=0 is satisfied. Different to the other approaches; no desired reference voltage/ current is required using the proposed method; and the issue of stability is also addressed. The results of the experiment demonstrate the effectiveness and robustness of the fuel cell power management system in various operating environments based on the duty manipulation of a converter.