Active EMI filtering using magnetic coupling cancellation

Details Active EMI filtering using magnetic coupling cancellation Active EMI filtering using magnetic coupling cancellation

2011-03-01

2011-03-01

Vu, Bao Q (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C363S043000, C363S045000, C363S046000, C363S047000

Reexamination Certificate

active

07898827

ABSTRACT:
An active electromagnetic interference (EMI) filtering may reduce the requirements for high current differential mode inductors. The active EMI filtering of the present invention may be useful in power devices that use switching power converters. Conventional EMI differential mode filtering devices may occupy up to 30% of the total weight and volume of the power electronics. Conventional differential mode filtering inductors tend to be large and heavy, especially so for high current input power lines. The present invention may replace the large conventional differential mode filtering inductors with a smaller set of coupled inductors.

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