Model reference adaptive control method applied to fuel cell thermal management system

A thermal management system and self-adaptive control technology, applied in the direction of fuel cell control, fuel cell, fuel cell additives, etc., can solve the problems of high accuracy of model parameters, tracking lag, difficult control, etc., to improve the effect of temperature control , avoid tracking lag, and enhance the effect of robustness

Active Publication Date: 2020-07-10
TAIYUAN UNIV OF TECH
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Problems solved by technology

The temperature control method proposed by current researchers has high requirements on the accuracy of model parameters, and at the same time needs to solve more complex nonlinear differential equations. The process is very cumbersome and it is difficult to achieve effective control, especially when there is a dynamic load. In the case of environmental temperature changes, it is prone to disadvantages such as tracking lag and large overshoot, which cannot meet the actual system requirements for control performance.

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  • Model reference adaptive control method applied to fuel cell thermal management system
  • Model reference adaptive control method applied to fuel cell thermal management system
  • Model reference adaptive control method applied to fuel cell thermal management system

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings.

[0049]It should be pointed out that the following detailed descriptions are exemplary and are intended to provide further description to the present application, but the examples in the drawings cannot be any limitation to the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0050] Such as figure 1 As shown, it is a structural schematic diagram of the fuel cell system in the embodiment of the invention, which mainly includes the following components: PEMFC, electric load, air compressor, intercooler, humidifier, cooling pump, bypass valve, radiator, coolant tank, hydrogen Tanks, ejectors and hydrogen circulation pumps, etc.

[0051] According to the heat balance equation, the relationship between the heat gen...

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Abstract

The invention relates to a model reference adaptive control method in a fuel cell vehicle thermal management system. Control of a fuel cell thermal management system is a key factor for guaranteeing reliable operation of the fuel cell system, and due to the fact that the thermal management system has high nonlinearity, model parameters are uncertain, and especially under the condition that the external temperature and the load dynamically change, tracking lag, large overshoot and other defects are prone to occurring in system temperature control. In order to solve the problems, the invention designs a model reference self-adaptive control method, and the temperature of an electric pile and the temperature of a circulating cooling liquid inlet are controlled by adjusting the mass flow of cooling liquid and the opening coefficient of a bypass valve. The control method provided by the invention is simple and efficient, can be conveniently applied to fuel cell systems of various power levels, and can effectively perform temperature control in real time.

Description

technical field [0001] The invention relates to a model reference adaptive control method in a fuel cell vehicle thermal management system, belongs to the technical field of fuel cell vehicles, and specifically relates to a model reference adaptive control method applied in a fuel cell thermal management system. Background technique [0002] A fuel cell is a power generation device that converts chemical energy into electrical energy. It uses hydrogen as fuel and air / oxygen as oxidant without using fossil fuels. It can continuously and stably output electrical energy and generate water and heat. Based on this, fuel cells have been extensively studied as an alternative product. At present, among all kinds of fuel cells, the application and research of proton exchange membrane fuel cells are the most, which have the advantages of high power density, high efficiency, low operating temperature and fast start-up. [0003] In order to ensure the system performance of the fuel cel...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04298H01M8/04694H01M8/04746H01M8/04029
CPCH01M8/04305H01M8/04768H01M8/04694H01M8/04029Y02E60/50
Inventor 赵震王铁李蒙王戎蔡龙乔天佑
Owner TAIYUAN UNIV OF TECH
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