H - Electricity – 02 – M
Patent
H - Electricity
02
M
H02M 1/00 (2006.01) H02M 7/538 (2006.01) H02M 7/5387 (2006.01)
Patent
CA 2215181
Power converter comprising two main switches (S1 and S2) connecting an output (S) to either the positive rail (VR+) or the negative rail (VR-), two freewheel diodes (D1 and D2) for maintaining current in the load (L), two toggle capacitors (C1 and C2) and an auxiliary circuit (CA) comprising an auxiliary inductance (LA) in series with two auxiliary switches (T1 and T2), coupled between the output (S) and a midpoint (M) of a capacitor divider (DC) providing median voltage. Any difference between the said median voltage and its nominal value is measured, while the main switches are additionally controlled according to the direction of the said difference, for a period depending on the size of the said difference, to cause additional current to flow through the said auxiliary circuit (CA) so as to correct at least partially the said difference.
Convertisseur de puissance comprenant deux commutateurs principaux (S1 et S2) connectant une sortie (S), soit au rail positif (VR+), soit au rail négatif (VR-), deux diodes de roue libre (D1 et D2) permettant le maintien du courant dans la charge (L), deux condensateurs de basculement (C1 et C2) et un circuit auxiliaire (CA) comprenant notamment une inductance auxiliaire (LA) en série avec deux commutateurs auxiliaires (T1 et T2), couplé entre la sortie (S) et un point milieu (M) d'un diviseur de tension capacitif (DC) fournissant une tension médiane. Des moyens évaluent tout écart de ladite tension médiane par rapport à sa valeur nominale, tandis que les commutateurs principaux sont additionnellement commandés selon le sens dudit écart, pendant une durée dépendant de l'amplitude dudit écart, afin de causer un courant additionnel dans ledit circuit auxiliaire (CA) de nature à corriger en partie au moins ledit écart.
Cazabat Stephane
Delay Christian
Elloumi Khaled
Melhem Wissam
Pouliquen Herve
Alcatel
Alcatel Alsthom Compagnie Generale D'electricite
Robic
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