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Author Xianjin Zhang ♦ Chunying Gong
Sponsorship IEEE Industrial Electronics Society
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©1982
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics
Subject Keyword Bridge circuits ♦ Inductors ♦ Voltage control ♦ Capacitors ♦ Mathematical model ♦ Control systems ♦ Inverters ♦ voltage balancer ♦ Buck converter ♦ dc distribution system ♦ half bridge ♦ micro-dc grid
Abstract Micro-dc grid is a novel power system focused on the development of renewable resources. However, two-wire transmitting power mode is generally accepted in a micro-dc grid, which is usually not suitable for the requirements of the input voltage levels of different power converters and loads. In order to meet the requirements, a half-bridge voltage balancer was introduced in a micro-dc grid, which can convert a two-wire mode into a three-wire mode in a micro-dc grid via a neutral line. However, the shoot-through problem existing in bridge-type converters degrades the reliability of the voltage balancer. In this paper, a dual-buck half-bridge voltage balancer and a control strategy are proposed, which can avoid the shoot-through problem. The small-signal model of the voltage balancer is derived for designing the control parameters and the current relationships of the inductors; the capacitors and the unbalanced loads are analyzed particularly. Finally, a prototype, which can deal with 2-kW unbalance ability, is built to verify that the proposed voltage balancer may have a good ability of balancing the voltage by building a neutral line.
Description Author affiliation :: Aero-Power Sci-Tech Center, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
ISSN 02780046
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2013-01-01
Publisher Place U.S.A.
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Volume Number 60
Issue Number 8
Size (in Bytes) 1.51 MB
Page Count 8
Starting Page 3157
Ending Page 3164

Source: IEEE Xplore Digital Library