계통 연계형 태양광 인버터 = (A) study on grid-connected solar energy inverter

국문 초록 (Abstract)

본 논문은 태양전지의 낮은 전압을 사용전원으로 변환하여 주는 계통 연계 태양광 인버터에 관한 연구이다. DC-DC 컨버터는 태양전지의 낮은 전압(35V ~ 65V)을 400V의 높은 전압으로 승압 시켜주기 위하여 Charge-Pumped Reboost 토폴로지를 적용하였고, 승압된 전압을 계통에 전력을 공급하는 인버터는 고효율 소형화에 유리한 트랜스리스 토폴로지를 적용하였다. 태양전지의 최대 전력점 추종제어, 계통 연계를 위한 PLL 제어, 출력 전류제어 등의 복잡한 시스템 알고리즘을 손쉽게 구현하고, 컨버터와 인버터를 동시에 제어하기 위하여 디지털 프로세서인 TMS320F28335 DSP IC를 사용하였다. 제안된 계통 연계 태양광 인버터의 동작을 확인하기 위해 450W급 계통 연계 태양광 인버터 시스템을 설계, 제작, 실험 하였다. 실험을 통하여 태양전지의 최대 전력점인 47V의태양전지 전압에서 450W의 출력과 92%의 효율, 0.99의 역률을 얻었다.

목차 (Table of Contents)

• 차 례
• 국문요지
• 제1장 서론 ··································································································· 1
• 제2장 계통 연계형 태양광 인버터 구성 ··············································· 2
• 제2.1절 계통 연계 태양광 인버터 시스템 구성도 ································ 2
• 제2.2절 Charge-Pumped Reboost 컨버터 ··········································· 3
• 제2.3절 계통 연계 인버터 ·········································································· 9
• 제.24절 최대 전력점 추종 및 계통 연계 운전 제어법 ···················· 10
• 제3장 계통 연계형 태양광 인버터 설계 ············································· 14
• 제3.1절 Charge-Pumped Reboost 컨버터 설계 ······························· 14
• 제3.2절 트랜스리스 인버터 설계 ···························································· 17
• 제3.3절 디지털 제어기 설계 ···································································· 19
• 제4장 실험결과 ························································································· 23
• 제5장 결론 ································································································· 31
• 참고문헌 ····································································································· 32
• Abstract ····································································································· 33