Power converter

Details Power converter Power converter

1977-07-20

1980-01-01

Miller, J. D.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

363 84, H02M 700

Patent

active

041819322

ABSTRACT:
A power converter is disclosed which is used for converting an a.c. power to a d.c. power or vice versa, and which comprises a first converter unit operated at a variable control angle with phase advanced to an input a.c. source voltage, and a second converter unit operated at a variable control angle with phase lagged to the input a.c. source voltage and having a d.c. side terminal connected in series to that of the first converter unit. At least one additional converter unit having a d.c. side terminal connected in seriesto those of the first and second converter units is further provided in accordance with the invention. The additional converter unit is operated at its bypass mode or a fixed control angle corresponding to the maximum forward or reverse conversion limit. The power converter of the above-mentioned construction enables its output level to be controlled continuously over a wider range without degrading its electric property than the conventional power converter.

REFERENCES:
patent: Re29560 (1978-02-01), Frank et al.
patent: 3562624 (1971-02-01), Ullman
patent: 3622862 (1971-11-01), Boksjo
patent: 3641356 (1972-02-01), Ekstrom
patent: 3953781 (1976-04-01), Forster et al.
patent: 4020411 (1977-04-01), Tsuboi et al.
patent: 4030018 (1977-06-01), Tsuboi

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