Patent ID: 6127743
Filing Date: 2000-10-03
Classification: H02J,H02M,Y02E

Abstract:
A harmonic mitigating device for mitigating harmonic currents generated by a load connected to a power distribution system, comprisinga magnetic core,a first reactive element comprising a line winding having a first end for connection to a first line and a second end, the line winding being disposed on the core in a first orientation,a second reactive element comprising a compensating winding having a first end for connection to the load and a second end, disposed on the core in a second orientation opposite to the first orientation, the second end of the compensating winding being connected to the first line through the line winding, andat least one cross-link circuit comprising a capacitor having an input connected to the first line at an intermediate point between the line winding and the compensating winding, and an output connected to a second line,wherein a reactance between the power distribution system and the load is reduced by a cancellation of fluxes generated by the line winding and the compensating winding, and a selected portion of the harmonic currents is diverted through the cross-link circuit.