Patent ID: 7449799

Claim:
A harmonic mitigating device for mitigating harmonic currents generated by a load having an input connected to a power distribution system and an output connected to the load, comprising a magnetic core having three core legs, each corresponding with one of three phases of the power distribution system, at least one magnetic shunt, extending across and magnetically coupled to the core legs at an intermediate part thereof, such that first and second parts of each core leg are separated from one another and disposed on either side of the shunt, for each phase, 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 first part of the core leg, for each phase, a second reactive element comprising a first cross-link winding, disposed on the second part of the core leg and having a first end connected to the second end of the line winding and a second end connected to a capacitor, the capacitor having a second end connected to a different phase or to a capacitor associated with a different phase, whereby the line winding and associated cross-link winding for each phase are magnetically coupled by the magnetic shunt.