Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2015.07a
- /
- Pages.1056-1057
- /
- 2015
Design of a control scheme for applying DC power sources to a distribution system
배전시스템에 DC 전력원을 적용하기 위한 제어 기법 설계
- Hwang, Chul-Sang (Korea Electrotechnology Research Institute) ;
- Kim, Gyeong-Hun (Korea Electrotechnology Research Institute) ;
- Byeon, Gilsung (Korea Electrotechnology Research Institute) ;
- Jeon, Jin-Hong (Korea Electrotechnology Research Institute) ;
- Jo, Chang-Hee (Korea Electrotechnology Research Institute) ;
- Park, Minwon (Changwon National University) ;
- Yu, In-Keun (Changwon National University)
- 황철상 (한국전기연구원) ;
- 김경훈 (한국전기연구원) ;
- 변길성 (한국전기연구원) ;
- 전진홍 (한국전기연구원) ;
- 조창희 (한국전기연구원) ;
- 박민원 (창원대) ;
- 유인근 (창원대)
- Published : 2015.07.15
Abstract
A common DC bus is a useful connection for several DC output sources such as photovoltaic (PV), fuel cells, and batteries. Operation of the common DC power system with more than two DC output sources, especially in a stand-alone mode, requires a control scheme for the stable operation of the system. In this paper, a control scheme has been developed for applying DC power sources to the distribution system. The purpose of the control scheme is to make the best use of the DC power sources. The DC power system consists of PV, two energy storage systems and a DC-AC inverter with the control scheme. A distribution system was modeled in PSCAD/EMTDC. As the results, the control scheme is applied to the DC-AC inverter and the DC-DC converter for transfer operations between the grid-connected and the stand-alone mode to keep the DC bus and the AC voltage constant. The results from the simulation demonstrate the stable operation of a grid connected DC power system.
Keywords