Method and apparatus for switching circuit system including a sa

Details Method and apparatus for switching circuit system including a sa Method and apparatus for switching circuit system including a sa

1998-07-24

2000-02-01

Han, Y. J.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 55, 363 97, H02M 112, H02H 710

Patent

active

060210532

ABSTRACT:
An energy-efficient power inverter is disclosed which changes direct current provided at a pair of source terminals to alternating current at load terminals. The power inverter comprises a switch device and snubber circuit including a resistance, a capacitance and a saturable core device for selectively removing the resistance from the snubber circuit. At saturation the core device effectively shorts the resistance out of the circuit, and upon coming out of saturation the device effectively reinserts the resistance for improved reduction in power losses during the switch operation.

REFERENCES:
patent: 3329908 (1967-07-01), Harms
patent: 5394319 (1995-02-01), Attwood
patent: 5479337 (1995-12-01), Voigt
patent: 5536980 (1996-07-01), Kawate et al.
patent: 5559656 (1996-09-01), Chokhawala
patent: 5635799 (1997-06-01), Hesterman
patent: 5815386 (1998-09-01), Gordon
patent: 5912810 (1999-06-01), Jacobs et al.

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