Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Evaluation on the Effect of Vibration for the Application of PEMFC Stack to Unmanned Aircraft

고분자 전해질 연료전지 스택의 무인기 적용을 위한 진동 영향 평가

  • KANG, JUN-YOUNG (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • OH, GUN-WOO (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • KIM, MIN-WOO (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • LEE, JUNG-WOON (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • LEE, SEUNG-KUK (Institute of Gas Safety R&D, Korea Gas Safety Corporation)
  • 강준영 (한국가스안전공사 가스안전연구원) ;
  • 오건우 (한국가스안전공사 가스안전연구원) ;
  • 김민우 (한국가스안전공사 가스안전연구원) ;
  • 이정운 (한국가스안전공사 가스안전연구원) ;
  • 이승국 (한국가스안전공사 가스안전연구원)
  • Received : 2018.11.16
  • Accepted : 2018.12.30
  • Published : 2018.12.30
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Abstract

Recently, research is being conducted to use a fuel cell as a power source of unmanned aircraft. However, safety standards about applying fuel cells to unmanned aircraft are insufficient. In this paper, to improve the safety of the fuel cells for unmanned aircraft is experimentally studied. For this reason, standards for safety of fuel cells were analyzed. And influence of vibration among the evaluation items related to the safety of the fuel cell for unmanned aircraft was discussed. In order to, at constant intervals, vibration was applied to the fuel cell, then the performance was measured, the measurement items were gas tightness, polarization curve, frequency response analysis (FRA). A total of 220 hours was experimented at 20 hour intervals. the result of vibration test, gas leakage rate was a maximum of -0.04826 kPa/min and Polarization curve reached a maximum of 1.0103 times of the initial value, the charge transfer resistance reached a maximum of 1.0104 times of the initial value. This research indicate that performance of fuel cell is affected by vibration and this study is expected to contribute to the safety of fuel cell for unmanned aircraft.

Keywords

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Fig. 1. Photograph of test fuel cell, (a) front-view, (b) top-view, (c) cathode-view, (d) anode-view

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Fig. 2. Vibration experiment equipment

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Fig. 3. Fuel cell performance evaluation equipment

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Fig. 4. Experimental process for vibration test

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Fig. 5. Gas tightness variation after vibration test

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Fig. 6. Polarization curve variation after vibration test

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Fig. 7. FRA variation after vibration test

Table 1. Standard related to fuel cells safety6-11)

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Table 2. Summary of standard assessments list for fuel cells6-11)

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Table 3. Operational conditions for polarization curve

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Table 4. Operational conditions for FRA

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