A1 Journal article (refereed), original research

Effect of power quality on the design of proton exchange membrane water electrolysis systems


Open Access publication

Publication Details
Authors: Koponen Joonas, Ruuskanen Vesa, Hehemann Michael, Rauls Edward, Kosonen Antti, Ahola Jero, Stolten Detlef
Publisher: Elsevier
Publication year: 2020
Language: English
Related Journal or Series Information: Applied Energy
Volume number: 279
ISSN: 0306-2619
JUFO-Level of this publication: 3
Open Access: Open Access publication
Location of the parallel saved publication: http://urn.fi/URN:NBN:fi-fe2020111390102

Abstract

Water electrolyzer technologies may play a key role in the
decarbonization of the fossil-fueled world economy. Electrolytic
hydrogen production could bridge emission-free power generation and
various energy end-use sectors to drive the energy system towards a net
zero-emission level. In order to reduce the economic cost of the
required energy transition, both the overall system efficiency in
converting electrical energy into the chemical energy carried by
hydrogen, and the material used to build electrolytic cell stacks,
should be optimal. The effect of power quality on the specific energy
consumption of proton exchange membrane (PEM) water electrolyzers is
investigated with a semi-empirical cell model. An experimentally-defined
polarization curve is applied to analyze cell-specific energy
consumption as a function of time in the case of sinusoidal current
ripples and ripples excited by an industrial 12-pulse thyristor bridge.
The results show that the effective electrolyzer cell area should be up
to five times as high as an ideal DC power supply when powered by the
12-pulse thyristor rectifier supply to match the specific energy
consumption between the two power supply configurations. Therefore, the
improvement of power quality is crucial for industrial PEM water
electrolyzer systems. The presented approach is applicable to simulate
the effect of power quality for different proton exchange membrane
electolyzers.


Last updated on 2020-30-11 at 10:45