국문목차
표제지=0,1,4
목차=i,5,2
표목차=iii,7,1
그림목차=iii,7,2
Abstract=v,9,1
I. 서론=1,10,2
II. 양하기의 구성=3,12,2
Ill. 양하기용 직류전동기 구동방식의 종류 및 비교=5,14,1
3.1. 워드 레오나드 방식=5,14,2
3.2. 일그너 방식=7,16,1
3.3. 싸이리스터 레오나드 방식=8,17,1
3.4. 양하기 제어회로 기본 구성도=9,18,1
IV. 직류 전동기 구동 시스템 제어=10,19,1
4.1. 양하기 직류전동기 전류 제어=10,19,2
4.2. 양하기 직류전동기 속도 제어=11,20,3
V. 싸이리스터 레오나드 방식 시뮬레이션=14,23,1
5.1. 시뮬레이션 구성=14,23,2
5.2. 시뮬레이션 결과=16,25,4
5.3. 시뮬레이션 결과 고찰=20,29,2
VI. 싸이리스터 직류 구동 시스템 고장원인 분석=22,31,1
6.1. Hoist motor & close motor load balance fault=22,31,5
6.2. Hoist motor & close motor speed balance fault=26,35,5
6.3. Hoist motor & close motor speed monitor fault=30,39,5
6.4. Grab bucket control fault=35,44,6
6.5. 싸이리스터 보호용 속동퓨즈 소손=40,49,11
Vll. 결론=51,60,3
참고문헌=54,63,2
부록:시스템 사양=56,65,2
Table1. Current controlled efficiency of ship unloader=13,22,1
Table2. Hoist motor&close motor parameters=15,24,1
Table3. 2004/07/20 Hoist motor thyristor fault=42,51,1
Table4. 2004/08/04 Hoist motor thyristor fault=42,51,1
Table5. 2004/08/28 Hoist motor thyristor fault=43,52,1
Table6. 2004/09/26 Hoist motor thyristor fault=43,52,1
Table7. 2004/11/30 Hoist motor thyristor fault=44,53,1
Table8. 2004/12/13 Hoist motor thyristor fault=45,54,1
Fig.2.1 Structure of ship unloader=3,12,1
Fig.3.1 Structure of ward leonard drive system=5,14,1
Fig.3.2 Structure of illgner drive system=7,16,1
Fig.3.3 Structure of thyristor leonard drive system=8,17,1
Fig.3.4 Control circuit of ship unloader=9,18,1
Fig.4.1 Block diagram of current control=10,19,1
Fig.4.2 Block diagram of speed control=12,21,1
Fig.5.1 Overall control system using PSIM=14,23,1
Fig.5.2 Waveforms of gate pulse angle at α=30˚=16,25,2
Fig.5.3 Waveforms of gate pulse angle at α=90˚=18,27,2
Fig.6.1 Close load balance normal condition of hoist=23,32,1
Fig.6.2 Close load balance abnormal condition of hoist=24,33,1
Fig.6.3 Diagram of load balance=24,33,1
Fig.6.4 Flowchart of load balance fault at inspection=25,34,1
Fig.6.5 Close speed balance normal condition of hoist=27,36,1
Fig.6.6 Close speed balance abnormal condition of hoist=28,37,1
Fig.6.7 Diagram of speed balance=28,37,1
Fig.6.8 Flowchart of speed balance fault at inspection=29,38,1
Fig.6.9 Diagram of speed monitor=31,40,1
Fig.6.10 Flowchart of speed monitor fault at inspection=32,41,1
Fig.6.11 Control circuit of magnetic brake=34,43,1
Fig.6.12 Photograph of magnetic brake=34,43,1
Fig.6.13 Configuration of synchro system=36,45,1
Fig.6.14 Flowchart of grab bucket control fault at inspection=37,46,1
Fig.6.15 Structure of synchro transmitter=38,47,1
Fig.6.16 Structure of synchro amplifier=38,47,1
Fig.6.17 Photograph of synchro transmitter=39,48,1
Fig.6.18 Photograph of synchro amplifier=39,48,1
Fig.6.19 Control circuit elementary of ship unloader=41,50,1
Fig.6.20 Control circuit of thyristor drive=41,50,1
Fig.6.21 Flowchart of thyristor fuse blow at inspection=47,56,1
Fig.6.22 Photograph of thyristor module&fuse=48,57,1
Fig.6.23 Waveforms of gate pulse&current feedback=49,58,1
Fig.6.24 Waveforms of gate pulse&current feedback=50,59,1