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Three-Phase EMI Noise Separator
Case ID:
09-096
Web Published:
9/20/2012
Common mode (CM) and differential mode (DM) components of multi-phase conducted electromagnetic interference (EMI) noise emanating from electronic circuits such as power converters/inverters are separated by respective coupled inductors connected to each phase of three or more phases and which are coupled to each other differently for CM and DM noise of the respective phases. the inductors of the DM separation unit are coupled such that a substantially ideal zero impedance is presented to DM noise which a high impedance is presented to CM noise. Conversely, the inductors of the CM separation unit are coupled such that a substantially ideal zero impedance is presented to CM noise while a high impedance is presented to DM noise.
Patent Information:
App Type
Country
Serial No.
Patent No.
File Date
Issued Date
Patent Status
US Utility
*United States
13/071,647
8,698,579
3/25/2011
4/15/2014
Abandoned
Category(s):
Electrical
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For Information, Contact:
Li Chen
Licensing Associate
Virginia Tech Intellectual Properties, Inc.
(540) 443-9217
lchen@vtip.org
Inventors:
Shuo Wang
Fred Lee
Keywords:
Electronics