Harmonic mitigating filter

Details Harmonic mitigating filter Harmonic mitigating filter

2005-01-18

2005-01-18

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

C333S012000

Reexamination Certificate

active

06844794

ABSTRACT:
A filter for mitigating harmonics in an electrical distribution system. In one embodiment the filter has one winding that is connected to the power distribution system which may be a three phase system and capacitors are connected to other end of the winding in either a delta or y-connection. There is one tapping on the winding for connection to a load which may an adjustable speed drive. In another embodiment the filter has two or more separate reactors. In either embodiment a switch may be in series with the capacitors and capacitors may be connected in parallel with the series combination of switch and capacitors.

REFERENCES:
patent: 1852125 (1932-04-01), Miessner
patent: 5093641 (1992-03-01), Wolpert
patent: 6009004 (1999-12-01), Swamy
patent: 6127743 (2000-10-01), Levin et al.

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