전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2012년도 전력전자학술대회 논문집
- /
- Pages.621-622
- /
- 2012
삼상 중성점 전압을 이용한 전압불평형 사고 방지용 보호장치 개발
Development of Protection Device for Voltage Unbalance Faults using Three-Phase Neutral Voltage
- Kwak, D.K. (Kangwon National University) ;
- Kim, D.S. (Kangwon National University) ;
- Kim, J.H. (Kangwon National University) ;
- Kim, S.C. (Kangwon National University) ;
- Jung, W.S. (Kangwon National University) ;
- Son, J.H. (Gangneung Yeongdong College)
- 발행 : 2012.07.03
초록
The thermal over-current relay or electronic motor protection relay is mostly used as the open-phase detection device of the three-phase motor or load. When the over-current or overheat of electric line is generated, it detects and operates circuit breaker, but there is the defect that the sensing speed is slow, the operation can be sometimes failed, and the precision is decreased. In order to improve these problems, this paper is proposed a new control circuit topology for open-phase protection using semiconductor devices. Therefore, the proposed open-phase protection device enhances the sensing speed and precision, and has the advantage of simple fitting in the three-phase motor control panel in the field, as it manufactures into small size and light weight.
키워드