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An intelligent control method for a solid oxide fuel cell system

A fuel cell system, solid oxide technology, applied in the direction of fuel cells, circuits, electrical components, etc., can solve problems such as inability to continue operation, fuel cell failure, and affecting system efficiency

Active Publication Date: 2018-12-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the operation of the system, its internal parameters and operating variables often change in various ways. At this time, if the control is still carried out according to the previous set value, the efficiency of the system will be affected, and in severe cases, the fuel cell may even fail. keep running

Method used

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  • An intelligent control method for a solid oxide fuel cell system
  • An intelligent control method for a solid oxide fuel cell system
  • An intelligent control method for a solid oxide fuel cell system

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Embodiment

[0051] figure 1 Is a solid oxide fuel cell system block diagram.

[0052] combine figure 1 , an intelligent control method for a solid oxide fuel cell system of the present invention is described in detail, specifically including the following steps:

[0053] S1. Building a model of a solid oxide fuel cell system

[0054] The solid oxide fuel cell system mainly includes air compressors, fuel heat exchangers, air heat exchangers, mixers, bypass valves, electric stacks, combustion chambers and other components. The present invention will adopt modularization method, carry out mathematical modeling to each component respectively, then according to figure 1 The structure shown connects them to realize the construction of the overall model. Since the main goal of the present invention is to realize the tracking control of fuel utilization rate, air peroxygen ratio and stack solid temperature, while ensuring that the system efficiency and temperature gradient are within a reason...

example

[0094] image 3 , Figure 4 , Figure 5 They are the tracking effect diagrams of the intelligent controller on temperature, air oxygen ratio, and fuel utilization rate, where the solid line is the result of the controller, and the dotted line is the setting obtained through the preset module, feedback compensation module, fault compensation module and switcher. It can be seen that the controller can well track the ideal set value under different conditions.

[0095]When the running time of the system is between 60,000 and 85,000 seconds, the efficiency of the system is lower than the target gate value due to the change of current and steam carbon ratio, such as Figure 6 As shown by the dotted line in the middle, at this time, the intelligent controller switching module selects the feedback compensator to correct the current set value, so that the efficiency returns to the range of the target value, as shown in Figure 6 As shown by the solid line in the center, on the cont...

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Abstract

The invention discloses an intelligent control method of a solid oxide fuel cell system, which builds a model of the solid oxide fuel cell system, obtains a preset value in the model according to thereal-time operation status of the solid oxide fuel cell system, and finally utilizes RBF to obtain a preset value of the solid oxide fuel cell system according to the preset value of the solid oxide fuel cell system. The PID controller tracks the set value of SOFC system in different states, and completes the intelligent control of SOFC system. This method solves the problem that the system efficiency will decrease or even malfunction when the system operating variables change in the control of the general solid oxide fuel cell system. At the same time, it realizes the tracking control of thefuel utilization rate, the air peroxide ratio and the stack solid temperature when the system runs safely and the efficiency is within the target range.

Description

technical field [0001] The invention belongs to the technical field of intelligent control of a fuel cell system, and more specifically relates to an intelligent control method for a solid oxide fuel cell system. Background technique [0002] The control method of solid oxide fuel cell system mainly includes PID control, fuzzy control, model predictive control and so on. Through the above-mentioned control method, the tracking control of reference values ​​such as system fuel utilization rate, temperature, power, etc. can be realized, thereby ensuring safe and stable operation of the system. However, during the operation of the system, its internal parameters and operating variables often change in various ways. At this time, if the control is still carried out according to the previous set value, the efficiency of the system will be affected, and in severe cases, the fuel cell may even fail. keep running. Based on the above situation, the present invention proposes a soli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04992H01M8/04664
CPCH01M8/04679H01M8/04992Y02E60/50
Inventor 吴小娟高丹慧
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA