System and method for cooling the power electronics of a...

B - Operations – Transporting – 60 – L

Patent

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B60L 7/22 (2006.01)

Patent

CA 2568067

An energy management system (1000) for a mining machine comprises an alternator (1100). The alternator (1100) can be mechanically coupled to an internal combustion engine. Alternator (1000) can generate AC signals, thereby converting mechanical energy from the internal combustion engine to electrical energy. A rectifier (1150) can provide DC signals to a DC bus (1175). A plurality of IGTB inverters (1500, 1600, 1700, 1800) can be adapted to drive a plurality of AC traction motors (1900, 1950). A circuit, comprising an IGTB chopper circuit, having one or more IGTB transistors (1300, 1350), is adapted to control the dissipation of energy, generated by the traction motors (1900, 1950) when the machine is operating under retard. The dissipation takes place in the resistor (1400).

L'invention concerne un système de gestion d'énergie (1000) pour machine d'exploitation minière qui comprend un alternateur (1100) pouvant être couplé mécaniquement à un moteur à combustion interne et produire des signaux C.A., pour convertir l'énergie mécanique du moteur en énergie électrique. Un redresseur (1150) peut fournir des signaux C.C. à un bus C.C. (1175). Plusieurs inverseurs IGBT (1500, 1600, 1700, 1800) peuvent être adaptés pour entraîner plusieurs moteurs de traction C.A. (1900, 1950). Un circuit, qui comprend un circuit d'interruption périodique IGBT, à un ou plusieurs transistors IGBT (1300, 1350), contrôle la dissipation d'énergie produite par les moteurs de traction (1900, 1950) lorsque la machine fonctionne sous retard. La dissipation intervient dans la résistance (1400).

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