DC/DC CONVERTER FOR BATTERY CHARGERS, AND METHOD OF CONTROLLING SUCH A DC/DC CONVERTER AT VERY LIGHT LOAD CONDITIONS

DC/DC CONVERTER FOR BATTERY CHARGERS, AND METHOD OF CONTROLLING SUCH A DC/DC CONVERTER AT VERY LIGHT LOAD CONDITIONS

A bidirectional resonant DC/DC converter comprising a full-bridge (2) coupled to an CLLLC resonant tank (3) and a power transformer and rectifier stage (4), said full-bridge (2) comprising two pairs of power switches S1/S2 and S3/S4, configured such that in a first mode of operation :- switches S1 a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TALEB, Miassa, MEGHNOUS, Ahmed Rédha, IGLESIAS, Raoul, GUILBAUD, Maël, KONATE, Christophe, GASCHER, Alain
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Beschreibung
Zusammenfassung:A bidirectional resonant DC/DC converter comprising a full-bridge (2) coupled to an CLLLC resonant tank (3) and a power transformer and rectifier stage (4), said full-bridge (2) comprising two pairs of power switches S1/S2 and S3/S4, configured such that in a first mode of operation :- switches S1 and S4 are driven by the same two pulse pattern with a phase shift β1, said two pulse pattern comprising a first pulse P1 of width t1 and a second pulse P2 of width t2, P1 and P2 being separated by an off-time t3,- switches S2 and S3 are driven by the same single pulse pattern comprising pulse P4 of width t4 with a phase shift β2.This converter can be used in battery chargers, in particular for electrical vehicles.