Effect of voltage elevation on cost and energy efficiency of power electronics in water electrolyzers
Year of publication
2023
Authors
Hysa Galdi; Ruuskanen Vesa; Kosonen Antti; Niemelä Markku; Aarniovuori Lassi; Guilbert Damien; Ahola Jero
Abstract
???????The interest in green hydrogen has been increasing in recent years for several applications, such as energy storage and different industrial sectors. The green hydrogen is produced from water electrolysis supplied by renewable electricity. The operation of industrial large-scale water electrolysis is characterized by a high DC current in the kiloampere range and a few hundred volts. Therefore, the rectifier unit plays an important role in converting AC current of the electricity grid into DC current supplied to the electrolyzer. The power electronic converters are also considered as one of the main cost components of the water electrolyzer system. The objective of this paper is to study whether the operation at a higher voltage than typical values (200 V–300 V) can be beneficial both for the cost and energy efficiency of the power converters in water electrolyzer systems. In this study, three different rectifier topologies considered for an industrial-scale electrolyzer are analyzed and compared in terms of energy efficiency and cost. The simulation models of each topology are carried out in the Matlab/Simulink environment.??????????????????????????????????????????
Show moreOrganizations and authors
Publication type
Publication format
Article
Parent publication type
Journal
Article type
Original article
Audience
ScientificPeer-reviewed
Peer-ReviewedMINEDU's publication type classification code
A1 Journal article (refereed), original researchPublication channel information
Open access
Open access in the publisher’s service
Yes
Open access of publication channel
Partially open publication channel
Self-archived
No
Other information
Fields of science
Other engineering and technologies
Keywords
[object Object],[object Object],[object Object],[object Object]
Internationality of the publisher
International
International co-publication
Yes
Co-publication with a company
Unknown
DOI
10.1016/j.jpowsour.2023.233108
The publication is included in the Ministry of Education and Culture’s Publication data collection
Yes