Composite filter for suppressing harmonic frequencies on electri

Details Composite filter for suppressing harmonic frequencies on electri Composite filter for suppressing harmonic frequencies on electri

1979-01-22

1980-09-23

Moose, Jr., Harry E.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 35, 333176, H02M 112

Patent

active

042246601

ABSTRACT:
AC to DC converters used in high-voltage direct-current power transmission lines produce objectionable harmonics. The composite filter herein described is actively tuned for the eleventh and thirteenth harmonics in addition to providing a low impedance path for the higher order harmonics, thereby eliminating such undesired harmonics so that they will not be transmitted over power lines where they can cause telephone interference, undesired heating of electrical equipment and other difficulties.

REFERENCES:
patent: 3825814 (1974-07-01), Pelly
patent: 3883792 (1975-05-01), Ellert
patent: 3935551 (1976-01-01), Henninger et al.
patent: 4053820 (1977-10-01), Peterson et al.
patent: 4079305 (1978-03-01), Peterson et al.

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