태양광 계통연계형 하이브리드 변압기의 해석 및 성능시험

다국어 초록 (Multilingual Abstract)

This paper concerns the development of the transformer that can reduce harmonics supplied to the system if the output of photovoltaic inverter in the photovoltaic system is grid-connected, and suggests that problems of harmonics and power factor degradation in the grid-connected photovoltaic system can be improved. In this study, the burden of increasingthe investment in new facilities and securing their installation space due to harmonics has been substantially eased through the development of a hybrid transformer possessing unbalanced function and harmonics reduction function using zig-zag coils, and most of all, it is expected that the development of such high efficiency hybrid transformer possessing functions of transformation and reducing harmonics can improve the power quality as well as prevent damages caused by harmonics, leading to suppress unnecessary loss of electric power and thereby contribute to energy savings.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 관련기술현황
• 3. 계통연계형 태양광발전시스템 시뮬레이션
• 4. 전원품질분석 장비를 이용한 현장실측
• 5. 결론
• References

참고문헌 (Reference)

1 이동춘, "전원전압의 불평형 및 왜곡시 3상 PWM 컨버터의 전류제어" 전력전자학회 논문지 12 (1) : 27 ~ 36, 2007

2 송영복, "부하변동 시의 고조파제거 및 절전기 개발" 조명.전기설비학회논문지 20 (6) : 87 ~ 95, 2006

3 김경철, "배전계통에서 위상조정 변압기를 사용한 고조파 저감에 관한 연구" 조명.전기설비학회논문지 16 (2) : 38 ~ 44, 2002

4 민윤홍, "Zig-Zag 권선에 의한 내철형 주상변압기 개발에 관한 연구" 조명.전기설비학회논문지 21 (8) : 121 ~ 128, 2007

5 P.P. Khera, "Application of zig-zag transformers for reducing harmonics in the neutral conductor of low voltage distribution system" Industry Applications Society Annual Meeting, Conference Record of the IEEE 2 : 1092 ~, 1990

6 A.A. Mohmoud, "A method for analyzing harmonic distribution in AC power systems" IEEE Trans PAS-101 : 151 ~ 161, 1982