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  Patent History
  • Application
    EP 20020009476 2002-04-25
  • Publication
    EP 1296442 2003-03-26

published patent: Apparatus for improving stability and dynamic response of half-bridge converter

TitleApparatus for improving stability and dynamic response of half-bridge converter
Priority Date2001-09-20 US 09/960435
Inventors
Issue Date2003
Citation
EP Published Patent application EP 1296442. European Patent Office (EPO), Escapenet, 2003 How to Cite?
AbstractTypically, in a half-bridge converter A DC blocking capacitor and inductance on the primary side combines with the inductor and capacitor on the secondary side to produce complicated converter dynamic characteristics that make converter stabilization difficult. The disclosed system and methods enable converter stabilization by modulating, as a function of the voltage across the DC blocking capacitor, the feedback output error signal or the ramp signal for the PWM controller of the converter. The modulation removes the effect of the resonant circuit formed by the primary inductance and the DC blocking capacitor in the output voltage regulation loop. Further adjustment of the duty cycle of the power switches enables keeping the output voltage undisturbed by voltage variation across the DC blocking capacitor.; Since, this inner compensation loop results in the voltage regulation feedback loop respond to only the output inductor-capacitor filter, the transfer function of this loop displays second order characteristics from the fourth order. Hence, stability issues are simplified to conventional second order compensation network whereby the converter can be optimized for fast transient response.
Persistent Identifierhttp://hdl.handle.net/10722/176725

 

DC FieldValueLanguage
dc.date.accessioned2012-11-30T08:38:24Z-
dc.date.available2012-11-30T08:38:24Z-
dc.date.issued2003-
dc.identifier.citationEP Published Patent application EP 1296442. European Patent Office (EPO), Escapenet, 2003en_HK
dc.identifier.urihttp://hdl.handle.net/10722/176725-
dc.description.abstractTypically, in a half-bridge converter A DC blocking capacitor and inductance on the primary side combines with the inductor and capacitor on the secondary side to produce complicated converter dynamic characteristics that make converter stabilization difficult. The disclosed system and methods enable converter stabilization by modulating, as a function of the voltage across the DC blocking capacitor, the feedback output error signal or the ramp signal for the PWM controller of the converter. The modulation removes the effect of the resonant circuit formed by the primary inductance and the DC blocking capacitor in the output voltage regulation loop. Further adjustment of the duty cycle of the power switches enables keeping the output voltage undisturbed by voltage variation across the DC blocking capacitor.; Since, this inner compensation loop results in the voltage regulation feedback loop respond to only the output inductor-capacitor filter, the transfer function of this loop displays second order characteristics from the fourth order. Hence, stability issues are simplified to conventional second order compensation network whereby the converter can be optimized for fast transient response.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documentsen_US
dc.titleApparatus for improving stability and dynamic response of half-bridge converteren_HK
dc.typePatenten_US
dc.description.naturepublished_or_final_version-
dc.contributor.inventorLiu Chui Pong, Joeen_HK
dc.contributor.inventorPoon Ngai Kit, Frankien_HK
dc.contributor.inventorPong, MHen_HK
patents.identifier.applicationEP 20020009476en_HK
patents.description.assigneeUNIV HONG KONG [CN]en_HK
patents.description.countryEuropean Patent Officeen_HK
patents.date.publication2003-03-26en_HK
patents.identifier.hkutechidEEE-2001-00051-3-
patents.date.application2002-04-25en_HK
patents.date.priority2001-09-20 US 09/960435en_HK
patents.description.ccEPen_HK
patents.identifier.publicationEP 1296442en_HK
patents.relation.familyCN 1405963 (A) 2003-03-26en_HK
patents.relation.familyDE 60216683 (T2) 2007-04-12en_HK
patents.relation.familyEP 1296442 (A2) 2003-03-26en_HK
patents.relation.familyHK 1054627 (A1) 2010-08-27en_HK
patents.relation.familyUS 6396716 (B1) 2002-05-28en_HK
patents.description.kindA2en_HK
patents.typePatent_publisheden_HK

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