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
- 학술대회자료
- 저자정보
- 발행연도
- 2015.6
- 수록면
- 1,252 - 1,259 (8page)
이용수
초록· 키워드
오류제보하기
Traditionally, the parallel-connected multi-leg inverter could assume the interleaved PWM to attenuate the switching frequency harmonics by using a single controller to generate the corresponding interleaved switching sequences. However, the interleaved PWM cannot be employed in multiple distributed inverters installed at different locations with their own controllers because the multiple independent controllers cannot work synchronously and the operational conditions are variable among the distributed inverters. The summed current harmonics of multiple distributed inverters could vary at the point of common coupling (PCC) and worsen the power quality of consumers. This paper therefore proposes a global synchronous pulse width modulation (GSPWM) method for the distributed inverters to attenuate the high frequency current harmonics at PCC meanwhile improve the PCC voltage quality. The optimal interleaved switching angles among the distributed inverters are calculated by fully considering the line impedances, the modulation indexes, the switching frequencies, the number of distributed systems and etc. Then the low frequency synchronous operation will synchronize the pulse width modulation sequences in the wanted variation range. Experimental results are presented to prove the validity of this method.
목차
Abstract
I. INTRODUCTION
II. PRINCIPLE AND REALIZATION OF GLOBAL SYNCHRONOUS PWM
III. OPTIMAL PHASE SHIFT CALCULATION OF GLOBAL SYNCHRONOUS PWM
IV. EXPERIMENTAL VERIFICATION
V. CONCLUSION
REFERENCES
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