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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. 36 figs.

Inventors:
; ; ;
Publication Date:
Research Org.:
Lockheed Martin Energy Syst Inc
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
570441
Patent Number(s):
US 5,710,698/A/
Application Number:
PAN: 8-540,302
Assignee:
Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States) PTO; SCA: 240200; PA: EDB-98:028433; SN: 98001912337
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 20 Jan 1998
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; INVERTERS; POWER CONDITIONING CIRCUITS; DESIGN; SEMICONDUCTOR SWITCHES; CAPACITORS

Citation Formats

Lai, J.S., Peng, F.Z., Young, R.W. Sr., and Ott, G.W. Jr. Delta connected resonant snubber circuit. United States: N. p., 1998. Web.
Lai, J.S., Peng, F.Z., Young, R.W. Sr., & Ott, G.W. Jr. Delta connected resonant snubber circuit. United States.
Lai, J.S., Peng, F.Z., Young, R.W. Sr., and Ott, G.W. Jr. Tue . "Delta connected resonant snubber circuit". United States.
@article{osti_570441,
title = {Delta connected resonant snubber circuit},
author = {Lai, J.S. and Peng, F.Z. and Young, R.W. Sr. and Ott, G.W. Jr.},
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. 36 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 20 00:00:00 EST 1998},
month = {Tue Jan 20 00:00:00 EST 1998}
}