Development of the power conditioning system for high power fuel cell system

2007 ◽  
Author(s):  
Jin-Hee Lee ◽  
Seung-Taek Baek ◽  
Hong-Ju Jung ◽  
Ho-Hyun Kang ◽  
Joon-Mo Chung ◽  
...  
Keyword(s):  
Fuel Cell ◽  
High Power ◽  
Cell System ◽  
Fuel Cell System ◽  
Power Conditioning

Active Control of Stack Inlet and Outlet Coolant Temperature for the PEM Fuel Cell System

2017 ◽  
Author(s):  
Fengxiang Chen ◽  
Jieran Jiao ◽  
Yang Yu ◽  
Yuan Gao ◽  
Sichuan Xu
Keyword(s):  
Fuel Cell ◽  
High Power ◽  
Temperature Regulation ◽  
Control Strategies ◽  
Pem Fuel Cell ◽  
Cell System ◽  
Control Technique ◽  
Coolant Temperature ◽  
Fuel Cell System ◽  
Circulation Pump

With the advantages of high power density, rapid startup, low operating temperature and no emission of pollutants, proton exchange membrane (PEM) fuel cell is considered to be the most promising candidate for the next generation power source of Clean Energy Automotive. PEM fuel cell operation necessitates thermal management to satisfy the requirements of safe and efficient operation by keeping the temperature within a certain range independent of varying load conditions. As for a high power PEM fuel cell system (eg. 80kw) without the external gas to gas humidifier, the temperature of the stack inlet coolant had better track to a time-varying curve produced by the working condition, which introduce the temperature difference between the cathode inlet and outlet, and thus it improves the relative humidity of the inlet air of the cathode. Compared to the traditional stack outlet coolant temperature regulation problem, the new plant is a two inputs and two outputs system, furthermore, the stack inlet coolant temperature control is a tracking problem which is different to the outlet coolant temperature regulation (regulation problem). Considering that the PEM fuel cell without the external humidifier is a promising scheme which has been adopted by the Mirai fuel cell vehicle [1], we actively aim to control both the inlet and outlet coolant temperature as desired simultaneously. In this paper, a two inputs and two outputs decouple control scheme is developed to achieve our aim. Firstly, based on the energy conservation and continuity equation, we establish a dynamic thermal model for the cooling system consisted of a water circulation pump and a radiator coupled to a fan, integrated with the fuel cell stack. Secondly, the static coupling characteristics of the control variable is analyzed according the relative gain matrix method. Then two specific control strategies are designed. One is based on frequency domain pure PID control technique. Considering the coupling phenomenon between two control channels, another technique is based on decouple theory feed-forward decouple control technique. Both of them try to regulate the outlet and inlet coolant temperature through tuning mass flow rate of water circulation pump and duty ratio of radiator. Finally, all the control strategies are demonstrated on the platform of Matlab / Simulink. The results show that both of them can control the stack inlet and outlet coolant temperature simultaneously, but the second strategy has much better performance than the first.

A Portable Fuel Cell System Using Activated Aluminum

2012 ◽  
Vol 132 (10) ◽  
pp. 997-1002 ◽  
Author(s):  
Koji Maekawa ◽  
Kenji Takahara ◽  
Toshinori Kajiwara
Keyword(s):  
Fuel Cell ◽  
Cell System ◽  
Fuel Cell System

Evaluation of Electric Load Following Capability on Fuel Cell System Fueled by High-Purity Hydrogen

2011 ◽  
Vol 131 (12) ◽  
pp. 927-935
Author(s):  
Yusuke Doi ◽  
Deaheum Park ◽  
Masayoshi Ishida ◽  
Akitoshi Fujisawa ◽  
Shinichi Miura
Keyword(s):  
Fuel Cell ◽  
High Purity ◽  
Cell System ◽  
Electric Load ◽  
Fuel Cell System ◽  
Load Following ◽  
High Purity Hydrogen
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