Dynamic harmonic filter for an AC power system

Details Dynamic harmonic filter for an AC power system Dynamic harmonic filter for an AC power system

2011-03-15

2011-03-15

Paladini, Albert W (Department: 2836)

Electrical transmission or interconnection systems

With harmonic filter or neutralizer

C333S175000, C333S176000, C333S177000, C333S181000

Reexamination Certificate

active

07906872

ABSTRACT:
A dynamic harmonic filter for an AC power system comprising at least one voltage source and at least one load is provided. The harmonic filter comprises a current sensing or voltage injection transformer connected in series with the voltage source and the load. One end of the primary of the transformer is connected to the voltage source, and the other end is connected to the load. The harmonic filter further comprises a parallel resonant LC circuit tuned to the fundamental frequency of the power system. One end of the secondary (S2) of the current injection of the voltage sensing transformer is connected to one junction of the parallel resonant LC circuit and the other end of the secondary of the current injection or voltage sensing transformer is connected to the other junction of the parallel resonant LC circuit through the secondary (S1) of the current sensing or voltage injection transformer.

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patent: 6577487 (2003-06-01), Gertmar
patent: 2008/0129122 (2008-06-01), Yu et al.
patent: 63-179603 (1988-07-01), None
patent: 10-201224 (1998-07-01), None
International Search Report dated Oc. 16, 2006 for International Application No. PCT/IN2006/000073.

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