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1. WO2002039571 - POWER CONVERTER

Publication Number WO/2002/039571
Publication Date 16.05.2002
International Application No. PCT/US2001/050138
International Filing Date 09.11.2001
Chapter 2 Demand Filed 31.05.2002
IPC
H02M 3/335 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
CPC
H02M 3/33592
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
33569having several active switching elements
33576having at least one active switching element at the secondary side of an isolation transformer
33592having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
Y02B 70/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
70Technologies for an efficient end-user side electric power management and consumption
10Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion
Applicants
  • NMB (U.S.A.), INC. [US]/[US] (AllExceptUS)
  • JANSEN, Arian, M. [NL]/[US] (UsOnly)
  • ZHANG, Xiaoyang [CN]/[US] (UsOnly)
Inventors
  • JANSEN, Arian, M.
  • ZHANG, Xiaoyang
Agents
  • ANGOTTI, Donna, L.
Priority Data
60/247,12711.11.2000US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) POWER CONVERTER
(FR) CONVERTISSEUR DE PUISSANCE
Abstract
(EN)
The invention is a power converter having a transformer (T) with a primary side winding (T1A) and a secondary side winding (T1C). Both the primary side and the secondary side have switches (Q1 & Q101) which are switched on and off alternately. When the primary master switch (Q1) is switched on, the transformer (T) charges. When the primary master switch (Q1) is switched off, the intrinsic capacitance of the secondary slave switch (Q101) discharges generating the zero voltage switching condition for the secondary slave switch (Q101). The secondary slave switch (Q101) is switched on at a time determined in accordance with the waveform generated by the transformer (T). When the secondary slave switch (Q101) is switched on, the transformer (T) discharges and ultimately the charge from an output capacitor (C101) flows into the transformer (T) as a backflow which charges the transformer (T). The secondary slave switch (Q101) is switched off at a time determined in accordance with a current flowing through said secondary switch (Q101). The intrinsic capacitance of primary master switch (Q1) discharges generating the zero voltage switching condition primary master switch (Q1) is then switched on and the cycle repeats.
(FR)
L'invention concerne un convertisseur de puissance comportant un transformateur (T) pourvu d'un enroulement latéral primaire (T1A) et d'un enroulement latéral secondaire (T1C). Les deux enroulements latéraux comportent des interrupteurs (Q1 & Q101) qui sont allumés/éteints en alternance. Lorsque l'interrupteur général primaire (Q1) est allumé, le transformateur (T) se charge. Lorsque l'interrupteur général primaire (Q1) est éteint, la capacité intrinsèque de l'interrupteur esclave secondaire (Q101) se décharge, créant ainsi un état de commutation à tension nulle pour l'interrupteur esclave secondaire (Q101). L'interrupteur esclave secondaire (Q101) est allumé à un moment déterminé qui dépend de la forme d'onde produite par le transformateur (T). Lorsque l'interrupteur esclave secondaire (Q101) est allumé, le transformateur (T) se décharge et la charge provenant d'un condensateur de sortie (C101) s'écoule alors dans le transformateur (T) comme un flux de retour qui charge le transformateur (T). L'interrupteur esclave secondaire (Q101) est éteint à un moment déterminé, en fonction du courant qui traverse ledit interrupteur secondaire (Q101). La capacité primaire de l'interrupteur maître primaire (Q1) se décharge, créant ainsi l'état de commutation à tension nulle de l'interrupteur maître primaire (Q1) qui est alors allumé pour permettre au cycle de reprendre.
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