Three-phase transformer for cycloconverter

Details Three-phase transformer for cycloconverter Three-phase transformer for cycloconverter

1987-10-26

1989-08-01

Kozma, Thomas J.

Inductor devices

Polyphase

Interconnected windings

363160, H01F 3300

Patent

active

048536644

ABSTRACT:
A three-phase transformer for a cycloconverter comprising three primary windings to which three-phase currents of U-, V- and W-phase are individually applied as inputs, and six secondary windings which are provided for each of the primary windings and so arranged that D.C. components contained in six sets of three-phase signals delivered from the secondary windings are canceled in the respective phases, thereby to prevent D.C. components from being contained in currents which are supplied to the primary winding wound around the main legs of an iron core for the respective phases.

REFERENCES:
patent: 2024739 (1935-12-01), Maslin et al.
patent: 2374029 (1945-04-01), Maslin
patent: 4112403 (1978-09-01), Friedlander
"AC Adjustable-Speed Main Drives for Rolling Mills", Hitachi Review, vol. 67, Apr. 1985, pp. 53-56.
"Cycloconverter and Its Application", Hakata et al., Toshiba Review, 1984, pp. 1027-1030.

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