Sliding mode control of electric power system comprised of fuel cell and multiple-modular DC-DC boost converters

The paper deals with controlling an electric power system comprised of a Proton Exchange Membrane Fuel Cell (PEMFC) as a Primary Source of Electric power Supply (PSES) and multiple-modular boost DC-DC power converter as a Secondary Sources of Electric Power Supply (SSES). System´s PEMFC/multiple-modular DC-DC boost power converter zero dynamics are analyzed and appeared to be stable. Relative degree approach is applied for direct control of the output load voltage as well as the PEMFC current in the presence of the model uncertainties. The adaptive gain super-twisting sliding mode controller controls the current in PEMFC. The decoupled Sliding Mode Controllers (SMC) are designed for controlling the output voltages of the multiple modular converters. The efficacy and robustness of the proposed two-fold SMC and 2-SM adaptive-gain controllers are confirmed via computer simulations.