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김학선

Kim, Hak Sun
Internet of Things System Lab.
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DC 마이크로 그리드를 위한 Three-port Dual Active Bridge DC-DC 컨버터의 독립 전력 제어

Alternative Title
Decoupled Power Control of Three-port Dual Active Bridge DC-DC Converter for DC Microgrid Systems
Author(s)
심주영이준영최현준김학선정지훈
Issued Date
2018-10
DOI
10.6113/TKPE.2018.23.5.366
URI
https://scholarworks.unist.ac.kr/handle/201301/25208
Citation
전력전자학회 논문지, v.23, no.5, pp.366 - 372
Abstract
Three-port dual-active bridge (DAB) converter in a DC microgrid was studied due to its high power density and cost-effectiveness. The other advantages of DAB include galvanic isolation and bidirectional power conversion capability using simple control modulation. The three-port DAB converter consists of a three winding transformer and three bridges. The transformer has three phases, which means that the ports are coupled. Thus, the three-port DAB converter causes unwanted power flows when the load connected to each port changes. The basic operational principles of the three-port DAB converter are presented in this study. The decoupling control strategy of the independent port power transfer is presented with a mathematical power model to overcome the unexpected power flow problem. The validity of the proposed analysis and control strategy is verified with PSIM simulation and experiments using a 1-kW prototype power converter.
Publisher
전력전자학회
ISSN
1229-2214

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