Non dissipative snubber circuit with saturable reactor

Details Non dissipative snubber circuit with saturable reactor Non dissipative snubber circuit with saturable reactor

2007-06-19

2007-06-19

Nguyen, Matthew V. (Department: 2838)

Electric power conversion systems

Current conversion

Including automatic or integral protection means

C363S056120, C323S222000

Reexamination Certificate

active

11131465

ABSTRACT:
A new type of the passive non-dissipative snubber with a single saturable reactor improves the performance of the boost converter used as a front-end active Power Factor Correction (PFC) in two critical areas: excess voltage stresses caused by high voltage spikes on input high voltage switching transistor of the boost converter is eliminated and EMI noise is much reduced. The high voltage spike energy instead of being dissipated as in a dissipative snubber circuits is recovered resulting in increased conversion efficiency. High voltage spike elimination also allows use of lower voltage rated devices with lower ON resistance, hence further increasing the efficiency of the PFC boost converter.

REFERENCES:
patent: 5414613 (1995-05-01), Chen
patent: 5636114 (1997-06-01), Bhagwat et al.
patent: 6157179 (2000-12-01), Miermans
patent: 6323627 (2001-11-01), Schmiederer et al.
patent: 7078868 (2006-07-01), Samejima et al.
patent: 7095630 (2006-08-01), Weber

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