DC/AC power converter and controlling method thereof

Details DC/AC power converter and controlling method thereof DC/AC power converter and controlling method thereof

2006-05-24

2009-02-24

Riley, Shawn (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

Reexamination Certificate

active

07495935

ABSTRACT:
The proposed DC/AC power converter for transforming a DC input source to an AC output source includes a transformer having a primary and a secondary windings, a switch network having a first switch electrically connected between the DC input source and the primary winding, a two-way current-transmitting module electrically connected between the secondary winding and the AC output source and a controllable conducting circuit electrically connected to the secondary winding. In which, the controllable conducting circuit is conducting when the two-way current-transmitting module transmits an electrical energy from the primary winding to the secondary winding and a current flowing through the primary winding is decreasing so as to lower down a voltage stress of the first switch of the switch network.

REFERENCES:
patent: 4628428 (1986-12-01), Walker
patent: 6191960 (2001-02-01), Fraidlin et al.
patent: 6813166 (2004-11-01), Chang et al.
patent: 7301786 (2007-11-01), Noguchi et al.

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