Apparatus For Noise Current Reduction In Power Converters
An Apparatus For Reducing Electromagnetic Interference Due To Common Mode Current In Power Converters Is Disclosed. Common Mode Current Flowing Through High Parasitic Capacitance On The Load Side Typically Contributes Significantly To The Electromagnetic Interference. In Order To Reduce The Electromagnetic Interference The Common Mode Current Is Reduced By Reducing The Voltage Driving A Current Through The High Parasitic Capacitance. A Counter-Acting Voltage Source Produces A Voltage Out Of Phase With The Voltage Driving The Common Mode Current. Such A Counter-Acting Voltage Is Obtained With The Aid Of A Winding Coupled To The Magnetic Component In The Power Converter Or By One Or More Active Components. The Counter-Acting Winding Is Wound With The Secondary And Primary Windings To Share The Same Magnetic Core.
Inventor: LIU CHUIPONG JOE | POON NGAIKIT FRANKI | PONG MANHAY BRYAN
Priority Number: EP1658669A4
IPC Current: H02M000328 | B29C004576 | G06F000130 | H02M000112
Assignee Applicant: The University of Hong Kong
Title: APPARATUS FOR NOISE CURRENT REDUCTION IN POWER CONVERTERS | VORRICHTUNG ZUR RAUSCHSTROMVERMINDERUNG IN STROMWANDLERN | DISPOSITIF DESTINE A LA REDUCTION DU COURANT DE BRUIT DANS DES CONVERTISSEURS DE PUISSANCE
Usefulness: APPARATUS FOR NOISE CURRENT REDUCTION IN POWER CONVERTERS | VORRICHTUNG ZUR RAUSCHSTROMVERMINDERUNG IN STROMWANDLERN | DISPOSITIF DESTINE A LA REDUCTION DU COURANT DE BRUIT DANS DES CONVERTISSEURS DE PUISSANCE
Novelty: Common mode noise reducing apparatus for switching power converter, has pair of capacitors connected in series in path linking input and output terminals of switching power converter with voltage generating source
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