Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2005-08-02
2005-08-02
Kim, Paul (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S604000, C029S607000, C029S609000, C336S178000, C336S234000, C363S017000, C363S048000, C363S058000
Reexamination Certificate
active
06922883
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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“Modeling and optimization of multilayer thick film inductors”; Jenei, S.M.; Aleksic, O.S.; Zivanov, L.D.; Microelectronics, 1997. Proceedings., 1997 21st International Conference on , vol.: 1, Sep. 14-17, 1997; pp.: 417-420.
Gokhale Kalyan P.
Sodo Nicklas Jan Anders
Vallinmäki Alpo K.
ABB Inc.
ABB Oy
Katterle, Esq. Paul R.
Kim Paul
Rickin, Esq. Michael M.
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