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Title: Delta connected resonant snubber circuit

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.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
570441
Report Number(s):
US 5,710,698/A/
PAN: US patent application 8-540,302
DOE Contract Number:
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 20 Jan 1998
Research Org:
Lockheed Martin Energy Syst Inc
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; INVERTERS; POWER CONDITIONING CIRCUITS; DESIGN; SEMICONDUCTOR SWITCHES; CAPACITORS