도서안내

01장 직류회로 1.1 물질의 전기적 성질 ···············································································2 1.2 전하: Q[C] ····························································································3 1.3 전류: I[A] ······························································································3 1.4 전위와 전압: V[V] ················································································4 1.5 옴의 법칙: 저항 R[Ω] ··········································································6 1.6 전력과 전력량: P[W], W[Wh] ·······························································7 1.7 줄의 법칙 ······························································································9 1.8 키르히호프의 법칙 ·················································································9 1.8.1 제1법칙: 전류법칙 / 10 1.8.2 제2법칙: 전압법칙 / 11 1.9 회로소자 ······························································································12 1.9.1 수동소자: 저항 / 12 1.9.2 능동소자: 전압원 / 19 1.9.3 능동소자: 전류원 / 21 1.10 전류의 화학 작용 ··············································································22 1.11 전지 ···································································································23 1.11.1 1차 전지 / 24 1.11.2 2차 전지 / 24 1.12 열전현상 ····························································································26 ⊙ 단원요약 ································································································27 ⊙ 연습문제 ································································································29 02장 정전용량과 자기회로 2.1 쿨롱의 법칙 ·······················································································38 2.2 전기장 ··································································································40 2.3 정전용량과 커패시터 ···········································································42 차 례 v 2.4 자하와 쿨롱의 법칙 ·············································································47 2.5 자기장 ··································································································47 2.6 전류에 의한 자기장 ·············································································49 2.7 암페어의 주회법칙 ···············································································50 2.7.1 무한 선전류에 의한 자계의 세기 / 51 2.7.2 토로이드에 의한 자계의 세기 / 52 2.7.3 무한장 솔레노이드에 의한 자계의 세기 / 53 2.7.4 원형코일에 의한 자계의 세기 / 54 2.8 자기회로 ······························································································55 2.9 전자력 ··································································································56 2.10 전자유도 ····························································································57 2.10.1 자속의 변화에 의한 전자유도 / 58 2.10.2 도체의 운동에 의한 전자유도 / 59 2.11 인덕턴스 ····························································································60 ⊙ 단원요약 ································································································65 ⊙ 연습문제 ································································································67 03장 교류 회로 3.1 정현파 교류 ·························································································72 3.2 교류 표시법 ·························································································76 3.2.1 교류의 크기 / 76 3.2.2 벡터 표시법 / 78 3.2.3 복소수의 표현 / 79 3.2.4 복소수의 연산 / 81 3.2.5 드무아브르의 정리 / 84 3.2.6 정현파의 페이서 표시 / 84 3.3 기본 교류 회로이고 ·············································································86 3.3.1 저항 회로 / 86 3.3.2 유도 회로(인덕턴스 회로) / 86 3.3.3 용량 회로(커패시턴스 회로) / 88 3.4 R, L, C 직렬 회로 ··············································································90 3.4.1 R-L 직렬 회로 / 90 3.4.2 R-C 직렬 회로 / 93 3.4.3 R-L-C 직렬 회로 / 94 3.5 R, L, C 병렬 회로 ··············································································97 3.6 회로 소자에서의 전력과 전력량 ··························································99 3.6.1 저항에서의 전력과 전력량 / 99 3.6.2 인덕턴스에서의 전력과 전력량 / 100 3.6.3 커패시터에서의 전력과 전력량 / 101 3.7 일반 회로에서의 전력과 역률 ···························································102 3.8 유효전력, 무효전력, 피상전력 ···························································103 3.9 3상 교류 ····························································································106 3.10 3상 교류회로의 결선과 전압·전류 ················································107 3.10.1 Y 결선 / 107 3.10.2 결선 / 108 3.10.3 결선 / 110 3.11 3상 전력 ··························································································111 3.12 비정현파 교류 ·················································································112 3.12.1 푸리에 급수 전개 / 112 ⊙ 단원요약 ······························································································114 ⊙ 연습문제 ······························································································116 04장 직류기 4.1 직류 전동기의 원리 ···········································································122 4.2 직류 전동기의 구조 ···········································································124 4.3 직류 전동기의 이론 ···········································································125 4.3.1 역기전력 / 125 4.3.2 전기자 전류 / 126 4.3.3 속도, 토크 및 출력 / 127 4.3.4 전기자 반작용 / 128 4.3.5 정류 / 129 4.4 직류 전동기의 종류와 특성 ·······························································130 4.4.1 직류 전동기의 종류 / 130 4.4.2 속도 특성 / 131 4.4.3 토크 특성 / 132 4.4.4 용도 / 133 4.5 직류 전동기의 운전 ···········································································133 4.5.1 기동 / 133 4.5.2 속도 제어 / 134 4.5.3 제동 / 135 차 례 vii 4.6 직류 전동기의 손실, 효율, 정격 ························································137 4.6.1 손실 / 137 4.6.2 효율 / 137 4.6.3 속도 변동률 / 138 4.6.4 정격 / 139 ⊙ 단원요약 ······························································································140 05장 변압기 5.1 변압기 원리와 구조 ···········································································142 5.1.1 변압기의 원리 / 142 5.1.2 실제 변압기 / 145 5.1.3 변압기의 구조 / 146 5.2 변압기의 특성 ···················································································147 5.2.1 정격 / 147 5.2.2 전압 변동률 / 147 5.2.3 손실 / 148 5.2.4 효율 / 149 5.2.5 변압기의 냉각 / 150 5.3 변압기의 결선 ···················································································151 5.3.1 변압기 권선의 방향과 극성 / 151 5.3.2 극성 시험 / 152 5.3.3 단상 변압기의 3상 결선 / 153 5.3.4 변압기 병렬 운전 / 156 5.4 특수 변압기 ·······················································································157 5.4.1 단권 변압기 / 157 5.4.2 누설 변압기 / 158 5.4.3 계기용 변성기 / 159 ⊙ 단원요약 ······························································································161 ⊙ 연습문제 ······························································································162 06장 교류 전동기 6.1 유도 전동기의 원리와 구조 ·······························································166 6.1.1 유도 전동기의 원리 / 166 6.1.2 회전 자기장 / 168 6.1.3 3상 유도 전동기의 구조 / 169 viii 차 례 6.2 유도 전동기 이론 ··············································································170 6.2.1 회전수와 슬립 / 170 6.2.2 유도 기전력과 주파수 / 171 6.2.3 등가 회로 전류 및 토크 / 171 6.2.4 손실과 효율 / 173 6.3 3상 유도 전동기의 기동 ···································································174 6.3.1 농형 전동기의 기동법 / 174 6.3.2 권선형 유도 전동기의 기동법 / 176 6.4 단상 유도 전동기 ··············································································176 6.4.1 단상 유도 전동기의 원리 / 176 6.4.2 단상 유도 전동기의 기동 / 177 6.5 동기 전동기 ·······················································································178 6.5.1 동기 전동기의 원리 / 178 6.5.2 동기 전동기 기동 방법 / 180 6.5.3 동기 전동기의 특징 / 180 ⊙ 단원요약 ······························································································181 ⊙ 연습문제 ······························································································182 07장 전력용 반도체소자 7.1 반도체 ································································································184 7.1.1 반도체의 성질과 종류 / 184 7.1.2 P-N 접합 반도체 / 185 7.2 다이오드 ····························································································186 7.2.1 다이오드의 성질 / 186 7.2.2 정류회로와 평활회로 / 188 7.3 사이리스터 ·························································································192 7.3.1 SCR / 192 7.3.2 GTO / 194 7.3.3 TRIAC / 195 7.4 전력용 트랜지스터 ·············································································195 7.5 전력용 MOSFET ················································································196 7.6 전력용 IGBT ······················································································197 7.7 전력 변환 ··························································································198 ⊙ 단원요약 ······························································································199 ⊙ 연습문제 ······························································································200 08장 측 정 8.1 측정의 종류 ·······················································································204 8.2 오차와 정도 ·······················································································205 8.3 지시계기의 구성 요소 ·······································································206 8.3.1 구동 장치 / 206 8.3.2 제어 장치 / 207 8.3.3 제동 장치 / 207 8.3.4 가동부 지지 장치 / 207 8.3.5 지침과 눈금 / 207 8.4 지시계기의 종류 ················································································208 8.4.1 가동 코일형 계기 / 209 8.4.2 가동 철편형 계기 / 209 8.4.3 전류력계형 계기 / 209 8.4.4 유도형 계기 / 210 8.4.5 정전형 계기 / 210 8.4.6 열전형 계기 / 211 8.4.7 정류형 계기 / 211 8.5 전압 측정 ··························································································212 8.6 전류 측정 ··························································································214 8.7 저항 측정 ··························································································215 8.7.1 절연저항 측정 / 215 8.7.2 접지 저항 측정 / 216 8.8 회로 시험기 ·······················································································217 ⊙ 단원요약 ······························································································219 ⊙ 연습문제 ······························································································221 09장 자동 제어 9.1 제어 ···································································································226 9.2 자동제어의 분류 ················································································227 9.2.1 개루프 제어계 / 227 9.2.2 폐루프 제어계 / 228 9.3 폐루프 제어계 ···················································································229 9.3.1 폐루프 제어계의 구성 / 229 9.3.2 폐루프 제어계의 분류 / 230 9.3.3 제어 동작에 따른 제어계의 분류 / 232 9.4 전달함수 ····························································································237 9.5 블록선도 ····························································································237 9.5.1 블록선도의 구성요소 / 237 9.5.2 블록선도의 등가변환 / 238 ⊙ 단원요약 ······························································································242 ⊙ 연습문제 ······························································································243 10장 시퀸스 제어 10.1 시퀀스 제어의 목적 ·········································································248 10.2 시퀀스 제어의 제어요소 ··································································249 10.2.1 수동 조작 스위치 / 249 10.2.2 검출 스위치 / 250 10.2.3 전자 계전기 / 252 10.2.4 타이머 / 253 10.2.5 전자 접촉기 / 254 10.3 시퀀스 제어계의 기본 회로 ·····························································256 10.3.1 불 대수 / 256 10.3.2 불 대수의 기본법칙 / 262 10.3.3 논리 회로의 간략화 / 262 10.3.4 기본 논리회로의 응용 / 265 10.4 시퀀스도와 실체배선도 ····································································269 10.4.1 유접점 회로 / 269 10.4.2 무접점회로 / 271 ⊙ 단원요약 ······························································································277 ⊙ 연습문제 ······························································································278 11장 제어 응용 11.1 전동기 기동·정지 ···········································································284 11.2 3상 유도 전동기 정·역 제어 ·························································288 11.3 3상 유도 전동기 Y- 기동 ······························································291 11.4 자동양수 제어 ·················································································296 11.5 자동화재 탐지설비 ···········································································299 12장 전기 설비 12.1 전력계통 ··························································································302 12.2 전기설비 ··························································································305 12.2.1 수변전설비 / 305 12.2.2 예비전원설비 / 307 12.2.3 전력간선 및 배선설비 / 311 12.2.4 동력설비 / 317 12.2.5 전기방재설비 / 318 12.2.6 기타 전기설비 / 318 12.3 소방전기설비 ···················································································319 12.3.1 자동화재탐지설비 / 322 12.3.2 비상경보설비 및 비상방송설비 / 322 12.3.3 유도등 / 323 12.3.4 비상조명등 / 323 12.3.5 비상콘센트 / 323 12.3.6 무선통신보조설비 / 324 12.3.7 케이블 연소방지 / 324 12.3.8 전기화재 아크·스파크 경보기 / 324 ⊙ 단원요약 ······························································································325 ⊙ 연습문제 ······························································································326