Quasi-Notch Filter를 이용한 DC-DC-AC 계통연계형 단상 인버터에서의 저주파 전류 감소 기법Low Frequency Current Reduction using a Quasi-Notch Filter operated in Two-Stage DC-DC-AC Grid-Connected Systems
- Other Titles
- Low Frequency Current Reduction using a Quasi-Notch Filter operated in Two-Stage DC-DC-AC Grid-Connected Systems
- Authors
- 정홍주; 김래영
- Issue Date
- Jun-2014
- Publisher
- 전력전자학회
- Keywords
- dc-dc-ac converter; dc-link voltage regulation; quasi-notch filter; double-fundamental frequency
- Citation
- 전력전자학회 논문지, v.19, no.3, pp.276 - 282
- Indexed
- KCI
- Journal Title
- 전력전자학회 논문지
- Volume
- 19
- Number
- 3
- Start Page
- 276
- End Page
- 282
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/144638
- DOI
- 10.6113/TKPE.2014.19.3.276
- ISSN
- 1229-2214
- Abstract
- In a single-phase grid-connected power system consisting of a dc-dc converter and a dc-ac converter, the current drawn from renewable energy sources has a tendency to be pulsated and contains double-fundamental frequency ripple components, which results in several drawback such as a power harvesting loss and a shortening of the energy source’s life. This paper presents a new double-fundamental current reduction- scheme with a fast dc-link voltage loop for two-stage dc-dc-ac grid connected systems. In the frequency domain, an adequate control design is performed based on the small-signal transfer function of a two-stage dc-dc-ac converter. To verify the effectiveness of proposed control algorithm, a 1 kW hardware prototype has been built and experimental results are presented.
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