Three level power converting apparatus

Details Three level power converting apparatus Three level power converting apparatus

H - Electricity

02

M

H02M 7/48 (2007.01) H01L 23/467 (2006.01) H02M 7/04 (2006.01) H02M 7/12 (2006.01)

Patent

CA 2582186

Each phase of a three-level power converting apparatus is configured by a single unit, and four switching devices (1u-4u) and two diodes (9u, 10u) provided in each unit are arranged along a flow direction of cooling air on a heat sink (15) of a cooling device with long sides of the switching devices (1u-4u) and the diodes (9u, 10u) oriented perpendicular to the flow direction of the cooling air. The first and second diodes (9u, 10u) are arranged in a central area of the heat sink (15), whereas the second switching device (2u) and the third switching device (3u) with high heat generation loss are arranged in a distributed fashion to sandwich a group of diodes in the central area in between.

L'invention concerne un convertisseur de puissance triphasé dans lequel chaque phase comprend un module comportant quatre éléments de commutation (1u-4u) et deux diodes (9u,10u) disposés dans la direction d'écoulement d'un air de refroidissement, leurs grands côtés étant disposés perpendiculairement à la direction d'écoulement de l'air de refroidissement sur la partie de réception de chaleur (15) d'un dispositif de refroidissement. Des première et deuxième diodes (9u, 10u) sont disposées au centre de la partie de réception de chaleur (15) alors que des deuxième et troisième éléments de commutation (2u, 3u) caractérisés par une forte perte de chaleur sont répartis entre le groupe de diodes centrales de façon à réguler la montée en température de ces éléments.

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