Inductor devices – With closed core interrupted by an air gap
Reexamination Certificate
2005-11-15
2005-11-15
Nguyen, Tuyen T (Department: 2832)
Inductor devices
With closed core interrupted by an air gap
C336S083000, C336S212000, C336S234000
Reexamination Certificate
active
06965290
ABSTRACT:
Non-linear inductor(s) are used to reduce the percent total harmonic distortion of the harmonics in the line currents in the input side rectifier system of an ac drive system. Several constructions for the non-linear inductor(s) are described. The non-linear inductor(s) may be constructed from E and I laminations. The gap depends on the construction of the middle leg of the E laminations and may have a step with a constant spacing or a variable spacing which depends on the stacking of the laminations. Alternatively the non-linear inductor(s) may be constructed from a toriodal core that either has a step gap or a variable type gap.
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Gokhale Kalyan P.
Sodo Nicklas Jan Anders
Vallinmäki Alpo K.
ABB Inc.
ABB Oy
Katterle, Esq. Paul R.
Nguyen Tuyen T
Rickin, Esq. Michael M.
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