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Jung, Jee-Hoon
Advanced Power Interface & Power Electronics Lab (APIPEL)
Research Interests
  • Power Converter, Wireless Power Transfer, Smart Power Interface, Digital Control System,
  • PHIL simulation system, Power Line Communication

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Isolated Three-port DC-DC Converter Employing ESS to Obtain Voltage Balancing Capability for Bipolar LVDC Distribution System

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Title
Isolated Three-port DC-DC Converter Employing ESS to Obtain Voltage Balancing Capability for Bipolar LVDC Distribution System
Author
Sim, JuyoungLee, Jun-YoungJung, Jee-Hoon
Issue Date
2020-05
Publisher
KOREAN INST POWER ELECTRONICS
Citation
JOURNAL OF POWER ELECTRONICS, v.20, no.3, pp.802 - 810
Abstract
A bipolar low-voltage DC (LVDC) distribution system used in residential and building applications requires AC-DC converters and voltage balancers that balance the two DC bus polarities. The bipolar DC bus voltage level only relies on the voltage balancer tied with the AC grid. An isolated DC-DC converter for an energy storage system (ESS) with the voltage balancing capability is proposed to prevent the bipolar voltage level collapse caused by the failure of the grid-tied voltage balancer. The proposed converter topology is an enhanced three-port dual-active-bridge (DAB) converter which can balance the bipolar DC voltage level without complex control. Furthermore, it has less current stress in power switches than that of the conventional three-port DAB converter. The effectiveness of the proposed converter is verified with a 3-kW prototype converter.
URI
https://scholarworks.unist.ac.kr/handle/201301/30571
URL
https://link.springer.com/article/10.1007%2Fs43236-020-00065-z
DOI
10.1007/s43236-020-00065-z
ISSN
1598-2092
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