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Mathematical modeling and simulation for external electrothermal characteristics of an alkaline water electrolyzer
Author(s) -
Shen Xiaojun,
Zhang Xiaoyun,
Lie Tek Tjing,
Li Guojie
Publication year - 2018
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4125
Subject(s) - modeling and simulation , matlab , power (physics) , renewable energy , electrolysis , alkaline water electrolysis , mathematical model , computer science , simulation , mechanical engineering , process engineering , engineering , electrical engineering , chemistry , thermodynamics , physics , electrolyte , operating system , electrode , quantum mechanics
Summary The water electrolyzer is a key device in the direct energy interaction between the hydrogen production system and the fluctuation power supply. Therefore, to understand its external electrothermal characteristics and modeling, an efficient simulation method is not only theoretically significant but also of great value in engineering applications for the key techniques, such as the study of control strategy and optimum configuration of renewable energy generation. Currently, research studies on the electrothermal characteristics of the alkaline water electrolyzer (AWE) are focused mainly on the microcosmic mechanism, without sufficient emphasis on the modeling and simulation technique of the external macroscopic electrothermal characteristics. Based on relevant theories in electrochemistry and test results of the electrothermal characteristics, this paper establishes a mathematical model of the equivalent impedance characteristics, electrothermal characteristics, and power regulation characteristics of AWE. Then, a simulation model of the external electrothermal characteristics is built with Matlab/Simulink. Finally, the accuracy of the established mathematical model and the functionality of the simulation model are verified. The research can provide some reference for the modeling and simulation of the electrical characteristics of AWE.