An Overview of Power Electronics Applications in Fuel Cell Systems: DC and AC Converters

Abstract

Power electronics and fuel cell technologies play an important role in the field of renewable energy. The demand for fuel cells will increase as fuel cells become the main power source for portable applications. In this application, a high-efficiency converter is an essential requirement and a key parameter of the overall system. This is because the size, cost, efficiency, and reliability of the overall system for portable applications primarily depend on the converter. Therefore, the selection of an appropriate converter topology is an important and fundamental aspect of designing a fuel cell system for portable applications as the converter alone plays a major role in determining the overall performance of the system. This paper presents a review of power electronics applications in fuel cell systems, which include various topology combinations of DC converters and AC inverters and which are primarily used in fuel cell systems for portable or stand-alone applications. This paper also reviews the switching techniques used in power conditioning for fuel cell systems. Finally, this paper addresses the current problem encountered with DC converters and AC inverter.

Advances in reduction of total harmonic distortion in solar photovoltaic systems: A literature review

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“…To reduce the THD generated at these two components, different controlling strategies and connection topologies have been presented. For the DC‐DC converter, the currently used topologies are buck, boost, buck‐boost, Cuk, single‐ended primary‐inductor converter (SEPIC), and flyback converter . These topologies can function as switching mode regulators to control and convert the DC output to a suitable voltage, which depends heavily on the switching frequency of the pulse width modulation (PWM) control signal .…”

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“…Fuel cell is an electrochemical conversion device that combines Hydrogen and Oxygen to form water and releases an electron which is captured and made to circulate in an external electrical circuit; this generates electricity if the process runs continuously. A fuel cell system can be used in any application with the right selection of power electronics circuits (Ali et al, 2014). The continuous supply and storage of Hydrogen and Oxygen becomes the only barrier in the development of the fuel cell based devices (Dimitris and Maria, 2016).…”