Autotransformer AC/DC converter

Details Autotransformer AC/DC converter Autotransformer AC/DC converter

2007-02-09

2009-10-27

Riley, Shawn (Department: 2838)

Electric power conversion systems

Current conversion

Having plural converters for single conversion

C323S255000

Reexamination Certificate

active

07609536

ABSTRACT:
In an AC/DC converter including an autotransformer having a primary winding connected to an AC power supply network and two secondary windings connected to two rectifier circuits operating in parallel to deliver a DC voltage to a load, the two same-polarity outputs of the two rectifier circuits being connected to respective first ends of a first coil and of a second coil whose second ends are connected together to form a first output of the converter, and the two outputs of the two rectifier circuits having the same other polarity being connected respectively to the first ends of a third coil and of a fourth coil whose second ends are connected together to form a second output of the converter, provision is made for the first, second, third, and fourth coils are wound on a common magnetic core. The invention is applicable to converters for use on board aircraft.

REFERENCES:
patent: 4774649 (1988-09-01), Archer
patent: 5933338 (1999-08-01), Wallace
patent: 6118362 (2000-09-01), Tinkler et al.
patent: 1555745 (2005-07-01), None
patent: 1139199 (1957-06-01), None
Sewan Choi, et al.; “Polyphase Transformer Arrangements with Reduced kVA Capacities for Harmonic Current Reductin in Rectifier Type Utility Interface”, Power Electronics Specialists Conference, 1995. vol. 1, (pp. 353-359), Jun. 18, 1995.

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