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A decoupling control method for fuel cell intake system

An air intake system, fuel cell technology, applied in fuel cells, electrical components, circuits, etc., can solve problems affecting PEM, PEMFC damage, etc., and achieve the effect of improving accuracy, intuitive structure, and simple structure

Active Publication Date: 2022-07-15
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, the instantaneous pressure difference between the cathode and anode will affect the PEM, causing irreversible damage to the PEMFC

Method used

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  • A decoupling control method for fuel cell intake system
  • A decoupling control method for fuel cell intake system
  • A decoupling control method for fuel cell intake system

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Embodiment Construction

[0029] The present invention will be described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 to Figure 9 As shown, the present invention provides a decoupling control method for an air intake system of a fuel cell, wherein the structure of the fuel cell is shown in figure 1 As shown, the decoupling control method includes the following steps:

[0031] Step 1. Establish a fuel cell intake system model, including air compressor system modeling, intake manifold modeling, cathode modeling, and throttle valve modeling. The specific values ​​and constants of physical parameters in the model are shown in Tables 1 to 3. ;

[0032] In step 1, the modeling of the air compressor includes the following steps:

[0033] The compressor model is divided into two parts. The first part is a static motor that determines the air flow rate through the compressor and then uses thermodynamic equations to calculate the outlet air temperature. The second par...

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Abstract

The invention discloses a decoupling control method for a fuel cell air intake system, which includes the steps of establishing a fuel cell air intake system model, designing a controller, etc. The air system is oriented to the establishment of a control model and an active disturbance rejection control based on feedback linearization. device design. First, two independent second-order affine systems are obtained by feedback linearization to decouple the output and control input; adaptive disturbance rejection control is used to track the incoming cathode flow and cathode pressure, according to the compressor and throttle valve measured in the experiment. data, and multiple sets of simulations were realized under different working conditions. The present invention not only has good performance, but also has strong robustness to unknown model uncertainty and disturbance.

Description

technical field [0001] The invention relates to the technical field of a fuel cell air intake system, in particular to a decoupling control method of a fuel cell air intake system. Background technique [0002] A proton exchange membrane fuel cell (hereinafter referred to as PEMFC) is a device that converts the chemical energy of hydrogen and oxygen into electrical energy, and it is considered to be the most potential replacement for conventional engines. For high-power PEMFCs, the transient behavior of the air supply subsystem plays a critical role in delivering the required power and extending the lifetime of the PEMFC. Especially for vehicle fuel cells, due to complex road conditions and frequent load demands, higher requirements are put forward for the dynamic dynamic response and steady-state tracking of PEMFC. Among the many characteristics, air flow into the cathode and cathode pressure are undoubtedly the two most critical variables. Low air flow causes oxygen star...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04992H01M8/04089H01M8/04746
CPCH01M8/04992H01M8/04089H01M8/04753Y02E60/50
Inventor 高金武刘华洋胡云峰陈虹
Owner JILIN UNIV