High voltage rectifier and associated control electronics

Details High voltage rectifier and associated control electronics High voltage rectifier and associated control electronics

1989-12-12

1991-03-12

Wong, Peter S.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363 65, 363 89, 323271, 219 6918, 21912134, H02H 7125

Patent

active

049997602

ABSTRACT:
A high voltage rectifier with provisions for rapidly limiting or discontinuing the current flow in response to the occurrence of overcurrents and rapidly restoring such current when the overcurrents cease. The rectifier comprises one or more stages, each stage comprising a rectifier fed from a secondary transformer winding, a subsequent smoothing capacitor, a first switch serving as a direct D.C. converter for regulation of the output voltage, a choke and capacitor for smoothing the current and a second switch, activated by overcurrents, such that the smoothing chokes can be switched over by the second switch into a first recovery circuit wherein, prior to each switching off of the respective second switch the associated first switch is switched on for a predetermined period of time and then switched off.

REFERENCES:
patent: 3354378 (1967-11-01), Jewett
patent: 3371262 (1968-02-01), Bird et al.
patent: 3818307 (1974-06-01), Hamilton et al.
patent: 4103324 (1978-07-01), Vandervelden et al.
patent: 4384321 (1983-05-01), Rippel
patent: 4447695 (1984-05-01), Inoue
patent: 4654776 (1987-03-01), Basire
patent: 4712171 (1987-12-01), Yamashita
patent: 4719553 (1988-01-01), Hinckley

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