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Title: Isolated and soft-switched power converter

Abstract

An isolated and soft-switched power converter is used for DC/DC and DC/DC/AC power conversion. The power converter includes two resonant tank circuits coupled back-to-back through an isolation transformer. Each resonant tank circuit includes a pair of resonant capacitors connected in series as a resonant leg, a pair of tank capacitors connected in series as a tank leg, and a pair of switching devices with anti-parallel clamping diodes coupled in series as resonant switches and clamping devices for the resonant leg. The power converter is well suited for DC/DC and DC/DC/AC power conversion applications in which high-voltage isolation, DC to DC voltage boost, bidirectional power flow, and a minimal number of conventional switching components are important design objectives. For example, the power converter is especially well suited to electric vehicle applications and load-side electric generation and storage systems, and other applications in which these objectives are important. The power converter may be used for many different applications, including electric vehicles, hybrid combustion/electric vehicles, fuel-cell powered vehicles with low-voltage starting, remote power sources utilizing low-voltage DC power sources, such as photovoltaics and others, electric power backup systems, and load-side electric storage and generation systems.

Inventors:
 [1];  [1]
  1. Knoxville, TN
Publication Date:
Research Org.:
LOCKHEED MARTIN ENERGY RES COR
OSTI Identifier:
874341
Patent Number(s):
US 6370050
Assignee:
UT-Batelle, LLC (Oak Ridge, TN)
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
isolated; soft-switched; power; converter; dcdc; dcdcac; conversion; resonant; tank; circuits; coupled; back-to-back; isolation; transformer; circuit; pair; capacitors; connected; series; leg; switching; devices; anti-parallel; clamping; diodes; switches; suited; applications; high-voltage; dc; voltage; boost; bidirectional; flow; minimal; conventional; components; design; objectives; example; especially; electric; vehicle; load-side; generation; storage; systems; including; vehicles; hybrid; combustionelectric; fuel-cell; powered; low-voltage; starting; remote; sources; utilizing; photovoltaics; backup; power source; switching device; tank circuit; power converter; /363/

Citation Formats

Peng, Fang Zheng, and Adams, Donald Joe. Isolated and soft-switched power converter. United States: N. p., 2002. Web.
Peng, Fang Zheng, & Adams, Donald Joe. Isolated and soft-switched power converter. United States.
Peng, Fang Zheng, and Adams, Donald Joe. Tue . "Isolated and soft-switched power converter". United States. https://www.osti.gov/servlets/purl/874341.
@article{osti_874341,
title = {Isolated and soft-switched power converter},
author = {Peng, Fang Zheng and Adams, Donald Joe},
abstractNote = {An isolated and soft-switched power converter is used for DC/DC and DC/DC/AC power conversion. The power converter includes two resonant tank circuits coupled back-to-back through an isolation transformer. Each resonant tank circuit includes a pair of resonant capacitors connected in series as a resonant leg, a pair of tank capacitors connected in series as a tank leg, and a pair of switching devices with anti-parallel clamping diodes coupled in series as resonant switches and clamping devices for the resonant leg. The power converter is well suited for DC/DC and DC/DC/AC power conversion applications in which high-voltage isolation, DC to DC voltage boost, bidirectional power flow, and a minimal number of conventional switching components are important design objectives. For example, the power converter is especially well suited to electric vehicle applications and load-side electric generation and storage systems, and other applications in which these objectives are important. The power converter may be used for many different applications, including electric vehicles, hybrid combustion/electric vehicles, fuel-cell powered vehicles with low-voltage starting, remote power sources utilizing low-voltage DC power sources, such as photovoltaics and others, electric power backup systems, and load-side electric storage and generation systems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

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