Decoupling control method and system of fuel cell air system

A decoupling control and air system technology, applied in the field of decoupling control, can solve problems such as nonlinearity, strong coupling of air parameters, time variation, etc., and achieve the effect of optimizing pressure and flow, and good dynamic and static characteristics

Pending Publication Date: 2020-11-17
重庆地大工业技术研究院有限公司
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Problems solved by technology

[0004] The present invention provides a decoupling control method and system of a fuel cell air system, which solves the problem that the air parameters of the fuel cell system are strongly coupled, time-va

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  • Decoupling control method and system of fuel cell air system
  • Decoupling control method and system of fuel cell air system
  • Decoupling control method and system of fuel cell air system

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[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0035] Please refer to figure 1 , which is a decoupling control structure diagram of the present invention. The multivariable control system is an advanced control system with complex processes. Air flow and air pressure are two variables with strong coupling in the fuel cell air system, including air flow control circuit and air pressure control circuit. Increasing the speed of the air compressor will increase the air flow and air pressure, while reducing the opening of the back pressure valve will reduce the air flow and increase the air pressure. In the dual-loop control of the fuel cell air system, the air flow and air pressure are nonlinear, time-varying and strongly coupled variables. In order to make the air flo...

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Abstract

The invention relates to a decoupling control method and system of a fuel cell air system. The method comprises the following steps of recognizing and calculating air parameters, and generating a gaincoefficient and a time coefficient of a decoupling control matrix, wherein the air parameters are an input variable and an output variable obtained through a test; generating an input and output parameter model in an air parameter control loop according to the autoregressive moving average model with the control quantity; substituting the gain coefficient and the time coefficient of the decoupling control matrix into the input and output parameter model in the air parameter control loop to generate a system transfer function relation matrix; and decoupling the system transfer function relationship matrix to generate a decoupling control matrix, and designing a decoupling controller according to the decoupling control matrix. The invention provides the method capable of relatively independently controlling parameters with strong coupling in the fuel cell air system, namely the decoupling control, so that the real-time online operation is realized, and the stable operation of the wholesystem is facilitated.

Description

technical field [0001] The invention relates to the field of decoupling control, in particular to a decoupling control method and system for a fuel cell air system. Background technique [0002] With the marketization of fuel cells, many fuel cell applications such as fuel cell vehicles, fuel cell power supplies, and fuel cell small and medium-sized power stations have emerged. Under the background that the environment and energy have become global common concerns, fuel cell vehicles are an important development direction of future energy technology. The proton exchange membrane fuel cell has the advantages of high energy conversion rate, fast start-up, long life, high specific power and specific energy, etc. Its reaction consumes hydrogen and oxygen, only produces water and heat, and does not pollute the natural environment. The world's major automobile manufacturers and R & D institutions believe that fuel cell vehicles with high efficiency and zero emissions will have br...

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Application Information

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IPC IPC(8): H01M8/04992H01M8/04298H01M8/04089H01M8/04082
CPCH01M8/04305H01M8/04992H01M8/04089H01M8/04201Y02E60/50
Inventor 何博李正辉刘超李涛杨长江刘昕
Owner 重庆地大工业技术研究院有限公司
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