abstract

• DC-DC power converters play an important role as interfaces between renewable energy sources and specific applications in AC or DC power systems. In particular, PEM fuel cells are attractive generation systems; unfortunately, they deliver a low and unregulated output voltage. Several converter configurations have been proposed for this application; however, a major drawback is the voltage stress over the active and passive switches are high, then devices with higher capabilities are required. In this work, an alternative high step-up voltage converter configuration is shown. This configuration is based on a quadratic boost converter with a capacitor-inductor-diode network for reducing voltage stress over the switches. A controller for the switching regulator using average current-mode control is proposed. Experimental results are shown using a laboratory prototype delivering an output voltage of 220 V and an output power of 400 W. Step load changes are applied to exhibit the robustness of the switching regulator. © 2016, Institution of Engineering and Technology. All rights reserved.

authors

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

publication date

• 2016-01-01

published in

• IET Conference Publications  Proceedings

keywords

• Average current-mode control; DC-DC switching power supply; High step-up voltage; PEM fuel-cells stack Electric inverters; Electric power supplies to apparatus; Fuel cells; Power converters; Proton exchange membrane fuel cells (PEMFC); Renewable energy resources; Switching; Switching circuits; Average current-mode control; Converter configurations; DC switching power supplies; High step-ups; PEM fuel cell; Renewable energy applications; Renewable energy source; Switching regulator; DC-DC converters

Digital Object Identifier (DOI)

• 10.1049/cp.2016.0241

start page

end page

volume

• 2016

issue

• CP684