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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2013, Vol. 14 Issue (9): 679-685    DOI: 10.1631/jzus.A1300146
Energy and Power Engineering     
Control design of 60 kW PEMFC generation system for residential applications
Ying-ying Zhang, Ying Zhang, Xi Li, Guang-yi Cao
Shandong Provincial Key Laboratory of Ocean Environment Monitoring Technology, Institute of Oceanographic Instrumentation, Shandong Academy of Sciences, Qingdao 266001, China; Control Science and Engineering Department, Key Laboratory of the Ministry of Education for Image Processing and Intelligent Control, Huazhong University of Science and Technology, Wuhan 430074, China; Fuel Cell Institute, Department of Automation, Shanghai Jiao Tong University, Shanghai 200030, China
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Abstract  This paper presented a control design methodology for a proton exchange membrane fuel cell (PEMFC) generation system for residential applications. The dynamic behavior of the generation system is complex in such applications. A comprehensive control design is very important for achieving a steady system operation and efficiency. The control strategy for a 60 kW generation system was proposed and tested based on the system dynamic model. A two-variable single neuron proportional-integral (PI) decoupling controller was developed for anode pressure and humidity by adjusting the hydrogen flow and water injection. A similar controller was developed for cathode pressure and humidity by adjusting the exhaust flow and water injection. The desired oxygen excess ratio was kept by a feedback controller based on the load current. An optimal seeking controller was used to trace the unique optimal power point. Two negative feedback controllers were used to provide AC power and a suitable voltage for residential loads by a power conditioning unit. Control simulation tests showed that 60 kW PEMFC generation system responded well for computer-simulated step changes in the load power demand. This control methodology for a 60 kW PEMFC generation system would be a competitive solution for system level designs such as parameter design, performance analysis, and online optimization.

Key words： Proton exchange membrane fuel cell (PEMFC)      Generation system      Control strategy      decoupling control      Optimal seeking control     
Received: 03 May 2013      Published: 02 June 2013
CLC:  TM911.42  
  N945.1  
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Ying-ying Zhang
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Ying-ying Zhang, Ying Zhang, Xi Li, Guang-yi Cao. Control design of 60 kW PEMFC generation system for residential applications. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2013, 14(9): 679-685.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1300146     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2013/V14/I9/679

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