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Patent History
  • Application
    EP20040762098 2004-08-18
  • Granted
    EP 1658669 2006-05-24
 
Supplementary

Granted Patent: APPARATUS FOR NOISE CURRENT REDUCTION IN POWER CONVERTERS
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TitleAPPARATUS FOR NOISE CURRENT REDUCTION IN POWER CONVERTERS
 
Granted PatentEP 1658669
 
Granted Date2006-05-24
 
Priority Date2004-08-18 PCT/CN2004000962
2003-08-19 US 10/643859
 
InventorsLIU, CHUIPONG JOE
POON, NGAIKIT FRANKI
PONG, MANHAY BRYAN
 
Issue Date2006
 
CitationEP Patent EP 1658669. European Patent Office (EPO), Escapenet, 2006 [How to Cite?]
 
AbstractAn 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.
 
DC FieldValue
dc.contributor.inventorLIU, CHUIPONG JOE
 
dc.contributor.inventorPOON, NGAIKIT FRANKI
 
dc.contributor.inventorPONG, MANHAY BRYAN
 
dc.date.accessioned2011-09-23T06:09:50Z
 
patents.date.application2004-08-18
 
dc.date.available2011-09-23T06:09:50Z
 
patents.date.granted2006-05-24
 
dc.date.issued2006
 
patents.date.priority2004-08-18 PCT/CN2004000962
 
patents.date.priority2003-08-19 US 10/643859
 
dc.description.abstractAn 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.
 
patents.description.assigneeUNIV HONG KONG [CN]
 
patents.description.ccEP
 
patents.description.countryEuropean Patent Office
 
patents.description.kindA1
 
dc.description.naturepublished_or_final_version
 
patents.identifier.applicationEP20040762098
 
dc.identifier.citationEP Patent EP 1658669. European Patent Office (EPO), Escapenet, 2006 [How to Cite?]
 
patents.identifier.grantedEP 1658669
 
dc.identifier.hkuros193575
 
dc.identifier.urihttp://hdl.handle.net/10722/140301
 
dc.languageeng
 
patents.relation.familyCN 1407702 (A) 2003-04-02
 
patents.relation.familyCN 1201469 (C) 2005-05-11
 
patents.relation.familyCN 1871761 (A) 2006-11-29
 
patents.relation.familyEP 1289108 (A2) 2003-03-05
 
patents.relation.familyHK 1054628 (A1) 2005-12-23
 
patents.relation.familyUS 6490181 (B1) 2002-12-03
 
patents.relation.familyUS 2004032753 (A1) 2004-02-19
 
patents.relation.familyUS 6879500 (B2) 2005-04-12
 
patents.relation.familyUS 2003231515 (A1) 2003-12-18
 
patents.relation.familyWO 2005018077 (A1) 2005-02-24
 
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documents
 
dc.titleAPPARATUS FOR NOISE CURRENT REDUCTION IN POWER CONVERTERS
 
dc.typePatent
 
patents.typePatent_granted
 
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<description.abstract>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.</description.abstract>
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