목차

Ⅰ. 서 론 ················································· 1
1. 연구 배경 ··············································· 1
2. 연구 목적 및 방법 ································· 2
Ⅱ. 모델링 ·············································· 4
1. 고도에 따른 표준대기 모델링 ············· 4
가. 가정 및 조건 ···································· 4
나. 구성 방정식 ······································ 4
2. 무인항공기 모델링 ································ 8
가. 가정 및 조건 ···································· 8
나. 구성 방정식 ······································ 8
3. 태양전지 모델링 ··································· 11
가. 가정 및 조건 ··································· 11
나. 구성 방정식 ····································· 11
4. 연료전지 모델링 ·································· 13
가. 가정 및 조건 ··································· 13
나. 구성 방정식 ···································· 13
a. 셀 전압 ·········································· 13
b. 활성화 과전압 ······························ 14
c. 농도 과전압 ·································· 14
d. Ohmic 과전압 ······························ 15
e. 연료전지 출력 ······························ 18
f. 수소-산소 사용량과 물 생성량 ··· 18
5. 수전해 모델링 ······································· 21
가. 가정 및 조건 ···································· 21
나. 구성 방정식 ····································· 21
a. 셀 전압 ··········································· 21
b. Bubble effect ································ 22
c. 활성화 과전압 ······························· 23
d. 농도 과전압 ··································· 23
e. Ohmic 과전압 ······························ 28
f. 수전해 출력 ···································· 28
g. 수소-산소 생성량 및 물 사용량 · 28
h. 가스 크로스오버와 안정성 ·········· 29
6. 가스탱크 모델링 ··································· 32
가. 가정 및 조건 ···································· 32
나. 구성 방정식 ····································· 32
Ⅲ. 시뮬레이션 ··········································· 33
1. 가정 및 조건 ·········································· 33
2. 재생연료전지 설계인자 설정 ·············· 34
Ⅳ. 결과 및 토의 ········································· 35
1. 비행경로 ················································· 35
2. 태양전지 ················································· 36
3. 연료전지 ················································· 37
가. 연료전지 성능 ·································· 37
나. 연료전지 설계인자 변화에 따른 시뮬레이션 패
턴 해석 ············································· 41
다. 연료전지 무게 ································· 45
4. 수전해 ··················································· 48
가. 수전해 성능 ····································· 48
나. 시뮬레이션 패턴 해석 ···················· 53
다. 고압 수전해의 가스 크로스오버와 안정성 ····· 56
a. 산소 내의 수소 농도 비율 ··········· 56
b. 안정성을 고려한 시뮬레이션 패턴 해석 ······· 58
c. 안정성을 고려한 재생연료전지 시스템 무게 60
Ⅴ. 결 론 ················································· 62
참고문헌 ···················································· 64