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Title: Resonant snubber inverter

Abstract

A resonant, snubber-based, soft switching, inverter circuit achieves lossless switching during dc-to-ac power conversion and power conditioning with minimum component count and size. Current is supplied to the resonant snubber branches solely by the main inverter switches. Component count and size are reduced by use of a single semiconductor switch in the resonant snubber branches. Component count is also reduced by maximizing the use of stray capacitances of the main switches as parallel resonant capacitors. Resonance charging and discharging of the parallel capacitances allows lossless, zero voltage switching. In one embodiment, circuit component size and count are minimized while achieving lossless, zero voltage switching within a three-phase inverter.

Inventors:
 [1];  [2];  [1];  [3];  [4];  [1];  [3]
  1. Knoxville, TN
  2. (Oak Ridge, TN)
  3. Oak Ridge, TN
  4. (Knoxville, TN)
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
871021
Patent Number(s):
5642273
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
H - ELECTRICITY H02 - GENERATION H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
resonant; snubber; inverter; snubber-based; soft; switching; circuit; achieves; lossless; dc-to-ac; power; conversion; conditioning; minimum; component; count; size; current; supplied; branches; solely; main; switches; reduced; single; semiconductor; switch; maximizing; stray; capacitances; parallel; capacitors; resonance; charging; discharging; allows; zero; voltage; embodiment; minimized; achieving; three-phase; resonant snubber; component count; voltage switching; power conditioning; circuit component; zero voltage; power conversion; semiconductor switch; resonant capacitors; soft switching; parallel resonant; circuit achieves; minimum component; voltage switch; lossless switching; achieves lossless; dc-to-ac power; inverter circuit; /363/

Citation Formats

Lai, Jih-Sheng, Young, Sr., Robert W., Chen, Daoshen, Scudiere, Matthew B, Ott, Jr., George W., White, Clifford P, and McKeever, John W. Resonant snubber inverter. United States: N. p., 1997. Web.
Lai, Jih-Sheng, Young, Sr., Robert W., Chen, Daoshen, Scudiere, Matthew B, Ott, Jr., George W., White, Clifford P, & McKeever, John W. Resonant snubber inverter. United States.
Lai, Jih-Sheng, Young, Sr., Robert W., Chen, Daoshen, Scudiere, Matthew B, Ott, Jr., George W., White, Clifford P, and McKeever, John W. Wed . "Resonant snubber inverter". United States. https://www.osti.gov/servlets/purl/871021.
@article{osti_871021,
title = {Resonant snubber inverter},
author = {Lai, Jih-Sheng and Young, Sr., Robert W. and Chen, Daoshen and Scudiere, Matthew B and Ott, Jr., George W. and White, Clifford P and McKeever, John W},
abstractNote = {A resonant, snubber-based, soft switching, inverter circuit achieves lossless switching during dc-to-ac power conversion and power conditioning with minimum component count and size. Current is supplied to the resonant snubber branches solely by the main inverter switches. Component count and size are reduced by use of a single semiconductor switch in the resonant snubber branches. Component count is also reduced by maximizing the use of stray capacitances of the main switches as parallel resonant capacitors. Resonance charging and discharging of the parallel capacitances allows lossless, zero voltage switching. In one embodiment, circuit component size and count are minimized while achieving lossless, zero voltage switching within a three-phase inverter.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}

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Works referenced in this record:

The resonant DC link converter-a new concept in static power conversion
journal, January 1989


Resonant snubbers with auxiliary switches
journal, January 1993


A rugged soft commutated PWM inverter for AC drives
journal, April 1992