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G-parameter를 이용한 직류 마이크로그리드의 컨버터상호 안정도 분석 및 가상 임피던스를 이용한 안정도 향상

Title
G-parameter를 이용한 직류 마이크로그리드의 컨버터상호 안정도 분석 및 가상 임피던스를 이용한 안정도 향상
Other Titles
Stability Analysis Using G-Parameters of Converters Constituting DC Microgrid and Stability Enhancement Through Virtual Impedance
Author
김래영
Keywords
DC microgrid; Stability analysis; G-parameter; Virtual impedance
Issue Date
2018-10
Publisher
전력전자학회
Citation
전력전자학회 논문지, v. 23, no. 5, page. 321-327
Abstract
DC microgrid system composed of multiple converters has a tendency to make the system unstable due to the interaction of converters. To solve this problem, in this paper, the interaction between cascaded converters with LC input filter is analyzed with impedance modeling using g-parameter. The input impedance and the output impedance of the system can be obtained through this technique. The stability of the system can be determined by applying Middlebrook’s stability criterion to the impedance. Virtual impedance is added to the controller to enhance stability. The validity of the analysis is verified by the result of several simulations and experiments.
URI
http://koreascience.or.kr/article/JAKO201832568236962.pagehttp://repository.hanyang.ac.kr/handle/20.500.11754/120296
ISSN
1229-2214; 2288-6281
DOI
10.6113/TKPE.2018.23.5.321
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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