Zero phase sequence current filter with adjustable impedance

Details Zero phase sequence current filter with adjustable impedance Zero phase sequence current filter with adjustable impedance

1994-04-14

1995-04-11

Dougherty, Thomas M.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With phase sequence network analyzer

361 20, 361 42, 361 47, 363 39, H02H 708, H02M 75387

Patent

active

054064376

ABSTRACT:
The invention provides a zero phase sequence current zig-zag filter with adjustable zero phase sequence impedance and a method for adjusting the impedance of the filter. Impedance is adjusted in discrete increments by detuning the filter one phase at a time. Detuning is accomplished using taps or auxiliary windings, whereby the ratio of the effective number of turns of the first winding relative to the second winding on the same core leg is changed independently for each phase of a three phase power supply.

REFERENCES:
patent: 1159228 (1915-11-01), Keidel et al.
patent: 1537371 (1925-05-01), Petersen
patent: 2194412 (1940-03-01), Trabut
patent: 2523778 (1949-02-01), Randall
patent: 3246267 (1966-04-01), Wesolowski et al.
patent: 3678338 (1972-07-01), Beachley
patent: 4037138 (1977-07-01), Kobayashi
patent: 4314321 (1982-01-01), Galliker
patent: 4694241 (1987-09-01), Genuit
patent: 4847745 (1989-07-01), Shekhawat et al.
patent: 4879509 (1989-11-01), Sometani et al.
patent: 5148362 (1992-09-01), Braun et al.
patent: 5159561 (1992-10-01), Watanabe et al.
Hoevenaars, Levin, Ling: "A Case Study in Cutting Power System Harmonics" Electrical Systems Engineer, Spring, 1990, pp. 4,6,28-32.

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