Load power switching method for solid oxide fuel cell

A solid oxide, load power technology, used in solid electrolyte fuel cells, fuel cells, fuel cell control, etc., can solve problems such as fuel deficit

Inactive Publication Date: 2016-03-02
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

However, these patents do not focus on how to ensure fast, safe and efficient load following when power changes, and how to avoid fuel shortage when power changes

Method used

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  • Load power switching method for solid oxide fuel cell
  • Load power switching method for solid oxide fuel cell
  • Load power switching method for solid oxide fuel cell

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0031] Through the switching method of the parabolic two-step current pre-control combination designed above, the system can quickly track to the external demand load when switching from half load to full load, and at the same time there is no fuel shortage. If any load-following power is switched, the intensity of the electrochemical reaction in the stack and the fuel deficit are directly rela...

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Abstract

The invention discloses a safe and effective control method for a solid oxide fuel cell during external load power switching. On the basis that static analysis is carried out to obtain optimal operating points (I, BP, AR and FU) when a system works at fixed load power, a method for solving the problems of fuel deficit and quick tracking of the load power, namely a parabolic open-loop double step current pre-control power switching method is provided when the load power is switched. According to the safe and effective control method, the problem of fuel deficit and the problem of quick tracking of the load power are effectively solved; an safe, efficient and stable quick load tracking of an SOFC system is achieved.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and more specifically relates to a load power switching method of a solid oxide fuel cell. Background technique [0002] Energy and the environment are two major issues facing the world today. Solid Oxide Fuel Cell (SOFC), as an efficient and clean power generation technology, has a good application prospect. Solid oxide fuel cell is a power generation device that directly converts chemical energy stored in fuel and oxidant into electrical energy without the intermediate process of generating heat energy. Its energy conversion efficiency is not limited by the Carnot cycle, and its theoretical efficiency can reach 80. -90%, actually up to 45-70%. Compared with traditional power generation methods such as thermal power, it has the characteristics of high power generation efficiency, low noise, environmental friendliness and low emission. [0003] Such as figure 1 As shown, the independent SOF...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/04089H01M8/04298H01M8/10
CPCH01M8/04H01M8/04089H01M8/04298H01M8/10Y02E60/50
Inventor 李曦许元武荆素文蒋建华邓忠华张琳程欢王杰徐梦雪
Owner HUAZHONG UNIV OF SCI & TECH
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