Rectifier transformer

Electric power conversion systems – Current conversion – Using semiconductor-type converter

Patent

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Details

336215, H02M 706

Patent

active

044930160

ABSTRACT:
A rectifier transformer circuit permitting six-phase double-wye operation with 120.degree. conduction, (without the use of an interphase transformer), and providing any predetermined degree of phase shift. The transformer comprises a zig-zag wye primary winding and a six-phase star secondary winding. By choosing the proper ratio for the turns of the zig and zag portions of the primary winding, any degree of phase shift can be obtained. The rectifier transformer is ideally suited for multiple-phase installations wherein several rectifier transformers are used, each providing a different amount of phase shift, without the use of separate phase-shift transformers.

REFERENCES:
patent: 1610492 (1926-12-01), Cole
patent: 1847920 (1932-03-01), Blume
patent: 1928848 (1933-10-01), Crout
patent: 1964521 (1934-06-01), Kubler
patent: 2194412 (1940-03-01), Trabut
patent: 2418643 (1947-04-01), Huge
patent: 2595753 (1952-05-01), Beardsley
patent: 2922972 (1960-01-01), Gordy
patent: 3026466 (1962-03-01), Friedrich
patent: 3026467 (1962-03-01), Barnes
patent: 3395373 (1968-07-01), Stephens
patent: 3509507 (1970-04-01), Specht
patent: 3671901 (1972-06-01), Lys

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