A parameter adjustment method when the load of solid oxide fuel cell rises

A solid oxide and fuel cell technology, which is applied in the direction of fuel cells, fuel cell control, fuel cell additives, etc., can solve the problems that plague the large-scale promotion and application of SOFC systems, the strict requirements for power generation efficiency of SOFC systems, and fuel shortages, etc., to achieve Overcoming the lack of operating experience and knowledge, ensuring the service life and operating safety, and the effect of good guidance

Active Publication Date: 2022-02-18
AIR FORCE EARLY WARNING ACADEMY
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AI Technical Summary

Problems solved by technology

[0003] The SOFC system has extremely strict requirements on its power generation efficiency. At the same time, when the external load power increases, it is easy to cause a fuel shortage due to the delay in fuel transmission.
These two problems are the primary core problems that plague the large-scale promotion and application of SOFC systems

Method used

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  • A parameter adjustment method when the load of solid oxide fuel cell rises
  • A parameter adjustment method when the load of solid oxide fuel cell rises
  • A parameter adjustment method when the load of solid oxide fuel cell rises

Examples

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specific Embodiment 1

[0037] see figure 2 , build a 5kW SOFC system model based on the composition of the SOFC system. It includes a blower 1 , a heat exchanger 2 , an electric stack 3 , an exhaust combustion chamber 4 and a power converter 5 ; wherein the power converter 5 is connected to an external load 6 . The optimal operating point under different power levels is determined by an optimization algorithm. Table 1 lists the optimal operating points and efficiencies of SOFC systems at different power levels.

[0038]

[0039] Solid oxide fuel cells provide electrical energy for external loads, assuming that the external load power is From 2kW to 4kW, the corresponding optimal operating points are (20,0.1, 0.01543, 0.19841) and (44,0, 0.03419,0.43649). SOFC system fuel delay time , at this time the operating parameters , ， Step conversion is performed directly, assuming that the initial current regulation time is , then the current rising rate is 0.24 A / s, and the stack current ...

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Abstract

The invention provides a parameter adjustment method when the load of the solid oxide fuel cell increases. When the external load power of the solid oxide fuel cell increases, under the fixed time of fuel transmission delay of the solid oxide fuel cell, through static The optimization algorithm finds that under static conditions, the initial power P 0 with final power P 1 The optimal operating point; the invention can determine the optimal operating point under different power conditions, and at the same time obtain the stack current switching trajectory under the condition of not passing through the power switching, and provide reference for the hybrid power system management of the SOFC system and other energy systems.

Description

technical field [0001] The invention relates to the field of hybrid power system management, in particular to a parameter adjustment method when the load of a solid oxide fuel cell rises. Background technique [0002] Solid oxide fuel cell (Solid Oxide Fuel Cell, referred to as SOFC) belongs to the third generation of fuel cells. Chemical power plant. It has the advantages of high power density, strong fuel adaptability, all-solid structure, simple equipment, no limitation of Carnot cycle, and high conversion efficiency. Its successful application has great practical significance for alleviating the energy crisis, meeting the power demand, protecting the ecological environment and ensuring national security. [0003] The SOFC system has extremely strict requirements on its power generation efficiency. At the same time, when the external load power increases, it is easy to cause a fuel shortage due to the delay in fuel transmission. These two problems are the primary core ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04298H01M8/0438H01M8/04537H01M8/04746
CPCH01M8/04305H01M8/04388H01M8/04395H01M8/04589H01M8/04402H01M8/04753H01M2008/1293Y02E60/50
Inventor 张琳汪枫谢超王党卫张成胜刘润华王晋晶周伟彬谢家伟张政国
Owner AIR FORCE EARLY WARNING ACADEMY
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