Multi-target sliding mode control method for proton exchange membrane fuel cell system

A technology of fuel cell system and proton exchange membrane, which is applied in the fields of electrical digital data processing, instrumentation, calculation, etc., and can solve problems such as inability to guarantee maximum system output power, single factor, etc.

Active Publication Date: 2019-11-05
四川嘉垭汽车科技有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing control methods for the proton exchange membrane fuel cell system only consider a single factor and cannot guarantee the maximum output power of the system, and propose a multi-objective sliding mode for the proton exchange membrane fuel cell system Control Method

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  • Multi-target sliding mode control method for proton exchange membrane fuel cell system
  • Multi-target sliding mode control method for proton exchange membrane fuel cell system
  • Multi-target sliding mode control method for proton exchange membrane fuel cell system

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Embodiment Construction

[0059] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the implementations shown and described in the drawings are only exemplary, intended to explain the principle and spirit of the present invention, rather than limit the scope of the present invention.

[0060] An embodiment of the present invention provides a multi-objective sliding mode control method for a proton exchange membrane fuel cell system, such as figure 1 As shown, the following steps S1-S8 are included:

[0061] S1. According to the relationship between the current change rate of the proton exchange membrane fuel cell system and the power demanded by the external load, a power tracking model of the proton exchange membrane fuel cell is established.

[0062] The power tracking model of proton exchange membrane fuel cell is as follows:

[0063]

[0064]

[0065] where V st is the fuel cell output vol...

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Abstract

The invention discloses a multi-target sliding mode control method for a proton exchange membrane fuel cell system. The method realizes system power tracking by using a current change rate as a control quantity for the first time. The efficient and safe operation of a fuel cell is ensured. The influence of the external load of the fuel cell, the cathode air flow, the anode hydrogen flow and the working temperature change of the galvanic pile on the output characteristics of the cell is comprehensively considered; and a multi-target sliding mode controller is designed to control the output power, the cathode air flow, the cathode and anode pressure difference and the stack temperature of the proton exchange membrane fuel cell system, so that the output power of the system is maximized whilethe tracking load demand power is ensured.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to the design of a multi-objective sliding mode control method for a proton exchange membrane fuel cell system. Background technique [0002] Proton exchange membrane fuel cell is a complex nonlinear system, and its dynamic response under transient conditions has always been a research hotspot. During the working process of the fuel cell system, the compressor provides air (oxygen) for the fuel cell. equipment, therefore, effective control of the compressor can improve the efficiency of the system. At the same time, hydrogen is one of the reactants required for the normal operation of the fuel cell, and its flow rate is directly related to the power generation efficiency of the fuel cell system. If the hydrogen flow is too small, the hydrogen supply will be insufficient, and the pressure difference between the cathode and the anode will be large, which will damage t...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCY02E60/50
Inventor 胡广地邓宇翔郭峰胡坚耀赛景辉
Owner 四川嘉垭汽车科技有限公司
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