Improved emi filter topology for power inverters

Details Improved emi filter topology for power inverters Improved emi filter topology for power inverters

B - Operations, Transporting

60

L

B60L 9/00 (2006.01) H02M 1/12 (2006.01) H02M 7/00 (2006.01) H02M 7/538 (2006.01)

Patent

CA 2192465

An EMI filter for an electric vehicle propulsion system, comprising a first (62) and second (72) capacitive element electrically connected in parallel with first (130) and second (132) power conductors, an inductive element (106) electrically connected in series with the first power conductor (130) and separating the first (62) and second (72) capacitive elements, and first (134) and second (136) junctions electrically connecting the second capacitive element (72) to an electronic switch (68), wherein the sum of internal inductances (135, 137) of the first (134) and second (136) junctions is less than the internal inductance (75) of the second capacitive element (72).

Filtre à interférences électromagnétiques (EMI) conçu pour un système de propulsion de véhicule électrique et comprenant un premier (62) et un deuxième (72) élément capacitif branchés en parallèle avec un premier (130) et un deuxième (132) conducteur de courant, un élément inductif (106) branché en série avec le premier conducteur (130) et séparant le premier (62) et le deuxième (72) élément capacitif, ainsi qu'une première (134) et une deuxième (136) jonction raccordant le deuxième élément capacitif (72) à un commutateur électronique (68), la somme des inductances internes (135, 137) de la première (134) et de la deuxième (136) jonction étant inférieure à l'inductance interne (75) du deuxième élément capacitif (72).

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