EMC filtering device in a variable speed drive

Details EMC filtering device in a variable speed drive EMC filtering device in a variable speed drive

2007-06-01

2010-06-15

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

Reexamination Certificate

active

07738268

ABSTRACT:
The invention relates to a filtering device connected between a rectifier module of a variable speed drive and an alternating current power supply network, the filtering device comprising an EMC filter comprising a common-mode inductor having a winding on each phase of the power supply network, the windings being magnetically coupled together. The filtering device comprises a shunt circuit connected in parallel with at least one of the windings of the common-mode inductor, the shunt circuit comprising passive components and making it possible to shunt a common-mode current flowing in the common-mode inductor in a frequency zone about a resonance frequency of the EMC filter.

REFERENCES:
patent: 6043997 (2000-03-01), He et al.
patent: 6567283 (2003-05-01), Welches
patent: 6906474 (2005-06-01), Trestman et al.
patent: 7276859 (2007-10-01), Trestman
patent: 2002/0140524 (2002-10-01), Gotz et al.
patent: 2009/0027136 (2009-01-01), Traa et al.
patent: 103 10 577 (2004-09-01), None
patent: WO 03/105328 (2003-12-01), None

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