Thyristor power converter filter for excitation applications

Details Thyristor power converter filter for excitation applications Thyristor power converter filter for excitation applications

2006-09-27

2008-10-07

Patel, Rajnikant B (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C363S040000, C323S222000

Reexamination Certificate

active

07433213

ABSTRACT:
An exciter system for the field of a synchronous generator excitation is provided. The exciter system includes an AC power source; a three-phase thyristor bridge having six legs, the three-phase bridge being connectable with the AC power source, and being adapted to provide a variable DC voltage output; a thyristor in each of the six legs of the three-phase bridge, wherein the thyristors provide a path for a device current; and a three-phase AC line filter series, including series resistive and capacitive elements across each phase of the AC power source and a plurality of bleed resistors, wherein at least one bleed resistor is connected to each AC input connection of the filter.

REFERENCES:
patent: 4683529 (1987-07-01), Bucher, II
patent: 4888675 (1989-12-01), Kumar et al.
patent: 5907467 (1999-05-01), Barbour
patent: 6442051 (2002-08-01), Ryan et al.
patent: 6734655 (2004-05-01), Javanifard et al.
patent: 6879500 (2005-04-01), Liu et al.

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