Cathode open type fuel cell temperature prediction control system and method

Abstract

The invention relates to a cathode open type fuel cell temperature model prediction control system, which is characterized in that the system comprises a model prediction controller, a PWM direct current motor speed regulator, a temperature sensor, a cathode open type fuel cell, a motor and a fan. The temperature model prediction controller predicts the cell temperature at the next moment according to the real-time temperature of the cathode open type fuel cell acquired by the temperature sensor, and outputs the duty ratio of the fan voltage to the PWM direct current motor speed regulator; thePWM direct current motor speed regulator controls the rotating speed of the fan by controlling the rotating speed of the motor according to the duty ratio of the voltage of the fan. The cathode opentype fuel cell temperature model prediction control system realizes the temperature prediction control of the cathode open type fuel cell.

Description

technical field [0001] The invention relates to a temperature prediction control system and method for an open cathode fuel cell. Background technique [0002] Fuel vehicle exhaust emissions are considered to be the main source of global greenhouse gases. Coupled with the sharp reduction of global fossil energy, the energy system of vehicles needs to be replaced urgently. Among them, fuel cell vehicles with fuel cells as the power source have the advantages of zero emission, high fuel economy, and extensive energy sources. They have broad application prospects and have attracted widespread attention. [0003] Fuel cells generate electricity through the electrochemical reaction of hydrogen and oxygen, with higher efficiency and less environmental impact than conventional heat engines. At present, fuel cells have been widely researched and applied in the fields of portable electronic equipment, automobile power supply, and distributed cogeneration of heat and power. Among th...

AI Technical Summary

Problems solved by technology

If the temperature is too high, the catalyst activity on the gas diffusion layer in the fuel cell will be increased, and the reaction will be further accelerated. If the temperature continues to rise, the proton exchange membrane of the fuel cell will be dehydrated or even ruptured, which will bring safety hazards to the use of the fuel cell.

On the contrary, if the stack temperature is low, the catalyst activity is low, and the reaction rate slows down, so that the fuel cell cannot provide the required power demand, and it will also cause waste of hydrogen fuel and reduce fuel economy. Expelling the fuel cell in the form of water vapor causes electrode flooding

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