Sliding mode control method for methanol auto-thermal reforming hydrogen generation process

Abstract

The invention discloses a sliding mode control method for a methanol auto-thermal reforming hydrogen generation process, aims to solve the problem of uncertainty of model parameters of the methanol auto-thermal reforming hydrogen generation process. The sliding mode control method is independent of an accurate mathematical model of a controlled object, and a good control effect can be achieved in case of model mismatch. A sliding mode controller is used for controlling the flow of an aqueous solution of methanol, which serves as a reaction raw material, according to expected hydrogen yield, actual hydrogen yield and a change rate of the actual hydrogen yield, and in addition, a variable ratio controller capable of restricting reforming temperature is used for controlling the flow of air which serves as another reaction raw material. The method can be adapted to coupling between the uncertainty of the model parameters of the methanol auto-thermal reforming hydrogen generation process and input, and advanced control over the methanol auto-thermal reforming hydrogen generation process can be realized.

Description

technical field [0001] The invention relates to a control method for the hydrogen production process of methanol autothermal reforming, in particular to a sliding mode control method for the hydrogen production process of methanol autothermal reforming. Background technique [0002] With the intensification of the energy crisis, seeking new energy sources that can replace fossil fuels has become a research hotspot. Energy issues have a major impact on the national economy and national development, so my country also takes the development of new energy as a strategy. [0003] Hydrogen is considered to be an efficient and clean energy. The rapid development of fuel cell technology is also promoting the development of hydrogen energy. A fuel cell is an energy conversion device that converts chemical energy directly into electrical energy. Fuel cells have attracted attention due to their high energy conversion efficiency. A very suitable fuel for fuel cells is hydrogen. How...

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Problems solved by technology

In addition, the fuel cell has strict requirements on the pressure of the input gas, and frequent large fluctuations will cause fuel cell failure and shorten the life of the fuel cell

These all bring difficulties to the control, so it is difficult for the classical control algorithm to achieve a good control effect

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