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Title: Delta connected resonant snubber circuit

Abstract

A delta connected, 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 dc supply voltage through the main inverter switches and the auxiliary 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];  [2];  [1]
  1. (Knoxville, TN)
  2. (Oak Ridge, TN)
Publication Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
871337
Patent Number(s):
US 5710698
Assignee:
Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN) ORNL
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
delta; connected; resonant; snubber; circuit; snubber-based; soft; switching; inverter; achieves; lossless; dc-to-ac; power; conversion; conditioning; minimum; component; count; size; current; supplied; branches; solely; dc; supply; voltage; main; switches; auxiliary; reduced; single; semiconductor; switch; maximizing; stray; capacitances; parallel; capacitors; resonance; charging; discharging; allows; zero; embodiment; minimized; achieving; three-phase; resonant snubber; supply voltage; component count; voltage switching; power conditioning; circuit component; zero voltage; power conversion; semiconductor switch; snubber circuit; resonant capacitors; soft switching; parallel resonant; circuit achieves; minimum component; dc supply; delta connected; voltage switch; lossless switching; achieves lossless; dc-to-ac power; inverter circuit; /363/

Citation Formats

Lai, Jih-Sheng, Peng, Fang Zheng, Young, Sr., Robert W., and Ott, Jr., George W. Delta connected resonant snubber circuit. United States: N. p., 1998. Web.
Lai, Jih-Sheng, Peng, Fang Zheng, Young, Sr., Robert W., & Ott, Jr., George W. Delta connected resonant snubber circuit. United States.
Lai, Jih-Sheng, Peng, Fang Zheng, Young, Sr., Robert W., and Ott, Jr., George W. Thu . "Delta connected resonant snubber circuit". United States. https://www.osti.gov/servlets/purl/871337.
@article{osti_871337,
title = {Delta connected resonant snubber circuit},
author = {Lai, Jih-Sheng and Peng, Fang Zheng and Young, Sr., Robert W. and Ott, Jr., George W.},
abstractNote = {A delta connected, 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 dc supply voltage through the main inverter switches and the auxiliary 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 = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}

Patent:

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