Journal of Jilin University(Engineering and Technology Edition) ›› 2022, Vol. 52 ›› Issue (9): 2175-2181.doi: 10.13229/j.cnki.jdxbgxb20220329

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Optimization of dynamic control strategy of fuel cell air supply system

Yi MA(),Jian ZHANG,Mei-xiang YOU,Rong GONG,Te-li HE,Wei FANG   

  1. Technical Center，Dongfeng Motor Corporation，Wuhan 430056，China
  • Received:2022-03-29 Online:2022-09-01 Published:2022-09-13

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Abstract:

In order to improve the dynamic response performance of the air system of the proton exchange membrane fuel cell， the one-dimensional simulation model of the fuel cell system was established by AMESim software. The process of the air dynamic response of the fuel cell was simulated， and the air dynamic control strategy was optimized. The optimized control strategy was tested and verified on the fuel cell system bench. The test results showed that the new control strategy successfully achieved the decoupling of air pressure and flow， which greatly reduced the air starvation and avoided the low voltage of the stack during the dynamic loading process of the fuel cell system. The new control strategy improves the dynamic response rate of the fuel cell system.

Key words: system engineering, fuel cell, air supply system, dynamic response, control strategy

CLC Number: 

  • TM911.4

Fig.1

Stack current and cell minimum voltage"

Fig.2

Change curve of air pressure"

Fig.3

Change curve of air flow"

Fig.4

Air compressor speed and back pressure valve opening"

Fig.5

Air compressor MAP"

Fig.6

Simulation model of fuel cell system"

Table1

Fuel cell system parameters"

序号参数单位数值
1系统额定功率kW55
2系统最高效率%≥60
3电堆输出电压V210~320
4氢气利用率%≥95
5通信方式-CAN2.0
6绝缘电阻Ω/V≥500
7防护等级-IP67

Fig.7

Simulation results of air compressor speed and back pressure valve opening"

Fig.8

Simulation results of air compressorMAP operation line"

Fig.9

Expected MAP of control effect"

Fig.10

Back pressure valve control module in AMESim"

Fig.11

Simulation results of air pressure for optimized"

Fig.12

Simulation results of air compressor speed and back pressure valve opening for optimized"

Fig.13

Simulation results of the air compressor MAP operation line for optimized"

Fig.14

Test results of HIL"

Fig.15

Test bench schematic"

Fig.16

Stack current and cell minimum voltage test results"

Fig.17

Change curve of air pressure test results"

Fig.18

Change curve of air flow test results"

Fig.19

Air compressor speed and back pressurevalve opening test results"

Fig.20

Air compressor MAP test results"

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