Power converter

H - Electricity – 02 – M

Patent

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Details

H02M 7/00 (2006.01)

Patent

CA 2318458

The invention concerns a power converter powered by voltage successive feed (Ucat) consisting of insulated gate bipolar transistor (IGBT) static switches, in the form of at least an IGBT module (10) directly fixed on a cooling block (14) which is itself connected to fins (0) or the like. The invention is characterised in that an insulation (13) is provided between the cooling block (14) and the fins (0) and the cooling block (14) whereon the IGBT module(s) (10) is/are fixed is connected to a potential intermediate between the fins (0) potential and the peak of the power converter successive feed (+Ucat).

La présente invention concerne un convertisseur de puissance alimenté par une tension d'alimentation continue (Ucat) composé d'interrupteurs statiques du type IGBT, se présentant sous la forme d'au moins un module IGBT (10) directement fixé sur un bloc refroidisseur (14) lui-même relié à des ailettes (0) ou similaires, caractérisé en ce qu'une isolation (13) entre le bloc refroidisseur (14) et les ailettes (0) est prévue et en ce que le bloc refroidisseur (14) sur lequel sont fixés le ou les modules IGBT (10) est relié à un potentiel intermédiaire entre le potentiel des ailettes (0) et le point haut de la tension d'alimentation (+Ucat) du convertisseur de puissance.

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