Universal harmonic mitigating system

Details Universal harmonic mitigating system Universal harmonic mitigating system

1999-10-22

2000-10-03

Jackson, Stephen W.

Electrical transmission or interconnection systems

With harmonic filter or neutralizer

H02J 100

Patent

active

061277436

ABSTRACT:
A harmonic mitigating device connected between the power distribution system and the load provides a flux shifting multiple-winding reactor with a capacitor bank connected between the reactor windings. At least one line winding is oriented in a first polarity on a core, and at least one compensating winding oriented in the opposite polarity on the core and connected between the output of the first winding and the load. The opposing fluxes generated by the line winding and the compensating winding cancel and thus reduce the through-reactance of the device between the load and the power supply. The input of a cross-link circuit comprising a capacitor is connected between the line winding and the compensating winding. The reactance through the cross-link circuit to the neutral (or another phase) is lower than the reactance through the line winding. Harmonic currents thus flow through the cross-link circuit, and are largely prevented from penetrating the power distribution system.

REFERENCES:
patent: 5416458 (1995-05-01), Menke et al.
patent: 5444609 (1995-08-01), Swamy et al.
patent: 5726804 (1998-03-01), Pecukonis et al.
patent: 6043569 (2000-03-01), Ferguson

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