abstract

• A fuel-cell stack generates low and unregulated DC output voltage, which depends on the demanded current. Therefore, a DC-DC converter is required to step up and regulate the output voltage. This voltage can be used as an input for an inverter to generate an AC voltage. In this work, a quadratic boost converter with a single active switch is proposed to obtain high conversion ratios and regulated the output voltage. A controller of the switching regulator is designed using average current-mode control approach. Experimental results are shown for a 400 W laboratory prototype to verify the performance of the designed regulator. In this case, a power module with polymer electrolyte membrane (PEM) fuel cell is used as an input source. This module delivers an output voltage between 22 V and 42 V, depending on the demanded current. Load step changes are applied to exhibit the robustness of the switching regulator. Finally, system stability is verified with experimental frequency response analysis. © 2015 IEEE.

authors

• Diaz-Saldierna L.H.
• Langarica Córdoba Diego
• Leyva-Ramos J.

publication date

• 2015-01-01

published in

• 2015 IEEE 6th International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2015  Proceedings

keywords

• Fuel cells; Inductors; MOSFET; Regulators; Switches; Transfer functions; Voltage control Distributed power generation; Electric current regulators; Electric inductors; Electric inverters; Electric power system interconnection; Electrolytes; Frequency response; Fuel cells; Polyelectrolytes; Power converters; Power electronics; Proton exchange membrane fuel cells (PEMFC); Static random access storage; Switches; System stability; Transfer functions; Voltage control; Average current-mode control; Energy processing; Experimental frequencies; High conversions; MOS-FET; Output voltages; Polymer electrolyte membranes; Switching regulator; DC-DC converters

Digital Object Identifier (DOI)

• 10.1109/PEDG.2015.7223100

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