Switch mode power supply using a saturable inductor to provide a

Details Switch mode power supply using a saturable inductor to provide a Switch mode power supply using a saturable inductor to provide a

1996-04-10

1997-07-08

Nguyen, Matthew V.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

H02M 744

Patent

active

056468369

ABSTRACT:
A switch mode power supply comprises at least one bridge arm including two switching cells in series receiving a direct current voltage to be switched. Each switching cell includes a switching arrangement in parallel with a capacitor and a protection diode. The switching arrangement is alternately closed and opened to supply an alternating current voltage at a switching frequency applied to a load one terminal of which is connected to the common point of the switching cells. A pulsed current source including a saturable inductor is connected to the common point. The saturable inductor is provided by a device including a primary circuit with two windings and a secondary circuit including a single winding to which a direct current source is connected. The windings are wound on a magnetic core and the windings of the primary circuit are connected in parallel and wound in opposite directions. A capacitor is connected in series with the saturable inductor.

REFERENCES:
patent: 4908754 (1990-03-01), Nilsen
patent: 5325283 (1994-06-01), Farrington et al.
patent: 5539630 (1996-07-01), Pietkiewicz et al.

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