개인구독
소속 기관이 없으신 경우, 개인 정기구독을 하시면 저렴하게
논문을 무제한 열람 이용할 수 있어요.
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 차한주
- 발행연도
- 2020
- 저작권
- 충남대학교 논문은 저작권에 의해 보호받습니다.
이용수3
이 논문의 연구 히스토리 (5)
2020
- 이 논문의 후속연구가 궁금하신가요?
- 연관 학술논문 또는 학술발표를 통해 보다 발전된 연구결과를 확인하실 수 있습니다.
- 이 논문의 연구 히스토리 확인하기
초록· 키워드
오류제보하기
In this study, we propose a control algorithm to reduce the unbalanced characteristics of a three-phase system power caused by the unbalanced load of the AC electric railway. Then, we verify its performance through the design of a power compensator and experiments applying it.
Like electric railway systems, a Scott transformer is applied, and the load and single-phase back-to-back converters are connected to the M-phase and T-phase outputs. The back-to-back converter monitors the difference in active power between the unbalanced loads in real-time and compensates for the power by using bidirectional characteristics. The active power is performed through PI control in the synchronous coordinate system, and DC link overall voltage and voltage balancing control are controlled jointly by M-phase and T-phase converters to improve the responsiveness of the system.
To verify the performance of the proposed power compensation device, an experiment was performed under the condition that M-phase 5 kW and T-phase 1 kW unbalanced load. As a result of the experiment, the unbalance rate of the three-phase current after the operation of the power compensator decreases by 58.66% from 65.04% to 6.38%, and the excellent performance of the power compensator proposed in this study is verified.
In addition, the conditions in which the circulating current may occur in the parallel operation situation were analyzed through simulation using PSIM, and it was confirmed that the circulating current was reduced in size and the circulating current was controlled through the circulating current control.
Like electric railway systems, a Scott transformer is applied, and the load and single-phase back-to-back converters are connected to the M-phase and T-phase outputs. The back-to-back converter monitors the difference in active power between the unbalanced loads in real-time and compensates for the power by using bidirectional characteristics. The active power is performed through PI control in the synchronous coordinate system, and DC link overall voltage and voltage balancing control are controlled jointly by M-phase and T-phase converters to improve the responsiveness of the system.
To verify the performance of the proposed power compensation device, an experiment was performed under the condition that M-phase 5 kW and T-phase 1 kW unbalanced load. As a result of the experiment, the unbalance rate of the three-phase current after the operation of the power compensator decreases by 58.66% from 65.04% to 6.38%, and the excellent performance of the power compensator proposed in this study is verified.
In addition, the conditions in which the circulating current may occur in the parallel operation situation were analyzed through simulation using PSIM, and it was confirmed that the circulating current was reduced in size and the circulating current was controlled through the circulating current control.
목차
제 1 장 서 론 11.1 연구배경 11.2 연구목적 21.3 논문개요 4제 2 장 교류전기철도용 전력보상장치 시스템 52.1 교류전기철도용 전력보상장치 시스템 구성 52.1.1 전력보상장치의 구성 52.1.2 제어기 구조 72.2 교류전기철도용 전력보상장치 시스템 모델링 82.2.1 스코트 변압기 모델링 82.2.2 제어기 모델링 142.2.3 전력보상장치 시스템 모델링 20제 3 장 불평형 전력보상 및 순환전류 제어기법 233.1 불평형 전력보상 제어기법의 특성 233.2 불평형 전력보상 제어기법의 동작원리 253.3 순환전류 발생조건 분석 263.4 순환전류 제어기 구조 32제 4 장 시뮬레이션 및 실험 334.1 전력보상장치 시뮬레이션 및 실험 시스템 334.1.1 불평형 전력보상 제어기법 시스템 334.1.2 순환전류 제어기법 시스템 374.2 불평형 전력보상 제어기법 시뮬레이션 및 실험 결과 394.2.1 불평형 전력보상 제어기법 시뮬레이션 394.2.2 불평형 전력보상 제어기법 실험 434.3 순환전류 제어기법 시뮬레이션 결과 46제 5 장 결론 49참고문헌 51Abstract 54
최근 본 자료
댓글(0)
0