Control optimization method and system for prolonging service life of SOFC system

A system life and optimization method technology, applied in the direction of fuel cell control, electrochemical generator, fuel cell, etc., can solve the problems that it is difficult to effectively reduce the system attenuation rate, the health status is difficult to obtain, and the system life is reduced, so as to achieve longevity and high efficiency The effect of control
CN112736268AActive Publication Date: 2021-04-30HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2021-04-30

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Abstract

The invention discloses a control optimization method and system for prolonging the service life of an SOFC system, and belongs to the field of fuel cell control. The method comprises the following steps: firstly, training a fuzzy neural network through historical data to obtain a relationship among the system input, time and attenuation voltage, and constructing a data-mechanism combined solid oxide fuel cell system attenuation model in combination with a mechanism model; secondly, obtaining data under a long time scale by utilizing the model, obtaining corresponding attenuation rates of the three key state variables under different target powers and different conditions, and selecting a value range of the corresponding key state variable when the attenuation rate is in an optimal interval to serve as an optimal working interval of the three key state variables; and the key state quantities are effectively controlled, so that the influence on system attenuation can be minimized, and long-life and efficient control is realized.
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Description

technical field

[0001] The invention belongs to the field of fuel cell control, and more particularly, relates to a control optimization method and system for improving the service life of an SOFC system. Background technique

[0002] As a high-efficiency, low-emission energy conversion technology, fuel cells directly convert chemical energy stored in fuels (such as hydrogen and methane) into electrical energy through electrochemical reactions. Among them, the solid oxide fuel cell (SOFC) at medium temperature has the advantages of all-solid structure and good fuel adaptability, and the power generation efficiency can reach more than 60%, and the energy recovery efficiency through CHP (cogeneration) can reach 90%. It is one of the most promising energy conversion technologies today. After decades of development, SOFC technology has gradually matured in terms of materials, stack manufacturing, system integration, etc. Many companies have successfully demonstrated SOFC system...

Claims

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