Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent
1991-01-31
1993-09-14
Stephan, Steven L.
Electric power conversion systems
Current conversion
Including an a.c.-d.c.-a.c. converter
363 53, 323251, 336 69, 336175, H02M 545, G05F 133, H01F 1514
Patent
active
052455211
ABSTRACT:
A method and apparatus for suppressing capacitive current in transformers is described. The winding of a transformer is constructed or modified into two substantially identical winding halves wired in a series aiding configuration. Two leads emanate from the center point of the winding, where the two halves are connected in series. This center point is at a constant potential throughout the switching cycle of the transformer. Suppression of the capacitive current in the input/output leads of the transformer is achieved by introducing common mode impedance into each lead and a corresponding center tap lead. The common mode impedance can be introduced in a variety of ways such as: running the pair of leads through a toroid, bead or sleeve of magnetic material; winding the leads on a magnetic toroid or rod; or using the magnetic core structure to introduce the impedance. Placement of any of these magnetic materials in substantial proximity to the lead pairs as arranged will suppress the capacitive current due to the coupling of the leads and the magnetic material.
REFERENCES:
patent: 2244386 (1941-06-01), Camilli
patent: 2340098 (1941-12-01), Suhlke
patent: 2978658 (1961-04-01), Reaves
patent: 3018380 (1962-01-01), Bright et al.
patent: 3146417 (1964-08-01), Pearson
patent: 3406364 (1968-10-01), Russell et al.
patent: 3562623 (1971-02-01), Farnsworth
patent: 3564384 (1971-10-01), Adler
patent: 3665288 (1972-05-01), Godawski
patent: 3886434 (1975-05-01), Schreiner
patent: 4275430 (1981-06-01), Seki
patent: 4307334 (1981-12-01), Peil et al.
patent: 4311977 (1982-01-01), Owen
patent: 4454492 (1984-06-01), Thackray
patent: 4577255 (1985-03-01), Martin
patent: 4689730 (1987-08-01), Kimura
patent: 4800344 (1989-01-01), Graham
Berhane Adolf
International Business Machines - Corporation
Scheer Michael J.
Stephan Steven L.
Troike Robert L.
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