D.C. to D.C. converter

Details D.C. to D.C. converter D.C. to D.C. converter

1982-05-28

1984-01-17

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 65, 363 67, 363 71, H02M 3335

Patent

active

044266782

ABSTRACT:
The object of the invention is to provide an improved converter for converting one direct current voltage to another.
A plurality of phased square wave voltages are provided from a ring counter (14) through amplifiers (A.sub.O1 -A.sub.O6) to a like plurality of output transformers (TO). Each of these transformers has two windings, and S.sup.1 winding and an S.sup.2 winding. The S.sup.1 windings are connected in series, then the S.sup.2 windings are connected in series, and finally, the two sets of windings are connected in series. One of six SCRs (SCRs 1-6) is connected between each two series connected windings to a positive output terminal (22) and one of diodes (D1-D6) is connected between each set of two windings of a zero output terminal (0). By virtue of this configuration, a quite high average direct current voltage is obtained, which varies between full voltage and two-thirds full voltage rather than from full voltage to zero. Further, its variation, ripple frequency, is reduced to one-sixth of that present in a single phase system.

REFERENCES:
patent: 3559030 (1971-01-01), Bussard
patent: 3628123 (1971-12-01), Rosa et al.
patent: 4062057 (1977-12-01), Perkins et al.
patent: 4159513 (1979-06-01), Gemp et al.
patent: 4218646 (1980-08-01), Akamatsu

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