Journal of Jilin University(Engineering and Technology Edition) ›› 2022, Vol. 52 ›› Issue (9): 2168-2174.doi: 10.13229/j.cnki.jdxbgxb20220346

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Thermal management strategy of fuel cell engine based on adaptive control strategy

Yan LIU(),Tian-wei DING,Yu-peng WANG,Jing DU,Hong-hui ZHAO()   

  1. General R&D Institute，China FAW Group Co. ，Ltd. ，Changchun 130011，China
  • Received:2022-03-30 Online:2022-09-01 Published:2022-09-13
  • Contact: Hong-hui ZHAO E-mail:liuyan127@faw.com.cn;zhaohonghui@faw.com.cn

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Abstract:

For the thermal management system of fuel cell vehicle engine， taking the optimal temperature value at the inlet and outlet of the stack under different operating conditions as the objective function and considering the interference of components and environment， the simulation model based on parameter estimation is established， and the thermal management control strategy based on adaptive control is designed. The problems of thermal management interference uncertainty and system state hysteresis of fuel cell engine are improved. The simulation results show that the thermal management strategy has good adaptability under different reactor operating conditions， and can achieve the goal of stabilizing the inlet and outlet temperature of the reactor at the set value and minimizing the change of the system temperature when the large and small cycles are turned on.

Key words: vehicle engineering, fuel cell vehicle, heat management, adaptive control method

CLC Number: 

  • U469.72

Fig.1

Heat management structure of fuel cell engine"

Fig.2

Thermal management control strategy diagram"

Table 1

Main parameters of thermal management system"

参数数值
冷却液比热容/［kJ·（kg·K）-1］3.5×103
空气密度/（kg·m-3）0.98
散热风扇有效面积/m20.65
空气比热容/［kJ·（kg·K）-1］1.005
水泵PWM信号0.2~0.8
风扇PWM信号0.2~0.8
初始冷却回路入口温度/℃60
环境温度/℃25

Fig.3

Working condition diagram of fuel cell engine"

Fig.4

Observation error diagram of cooling circuit inlet"

Fig.5

Observation error diagram of cooling circuit outlet"

Table 2

Control results"

项目目标值结果误差
入口温度6667.4~66.01.4
出口温度17069.7~70.20.3
出口温度27171~71.80.8
出口温度37372.5~73.00.5

Fig.6

Diagram of measured temperature of cooling circuit"

Fig.7

Diagram of measured temperature of ooling circuit"

Fig.8

Observation diagram of cooling circuit inlet"

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