Switching power converters with improved lossless snubber networ

Details Switching power converters with improved lossless snubber networ Switching power converters with improved lossless snubber networ

1999-10-04

2000-09-05

Nguyen, Matthew

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363 21, H02H 7122, H02M 3335

Patent

active

061152714

ABSTRACT:
Novel four-terminal lossless snubber networks for use in switching power converters is described. This network is formed by a first series connection of a capacitor and a diode, a second series connection comprising a capacitor and a sub-series connection of an inductor and a diode and a third diode. The four terminal network is designed to be inserted between the power source and the controllable switch and will reduce the maximum stress to which the controllable switch will be exposed during the switching off of the switch by appropriately selecting the values of the capacitance and inductance. Power converters employing the novel snubber topologies are also presented.

REFERENCES:
patent: 5260607 (1993-11-01), Kinbara
patent: 5633579 (1997-05-01), Kim
patent: 5815386 (1998-09-01), Gordon

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