Ac/ac converter for hybrid vehicles

Details Ac/ac converter for hybrid vehicles Ac/ac converter for hybrid vehicles

H - Electricity

02

M

H02M 5/45 (2006.01) B60L 7/22 (2006.01)

Patent

CA 2567966

An electric drive system for an off-road traction vehicle is disclosed. Such a system includes a rectifier, a DC bus and a traction motor inverter. The rectifier includes an active Insulated Gate Bipolar Transistor and converts a first AC signal received from an alternator to a first DC signal. The traction motor inverter receives the first DC signal from said rectifier and provides a second AC signal (which is space vector modulated) to a traction motor of said off-road traction vehicle. When the off-road traction vehicle is under retard, the traction motor inverter acts as a rectifier and receives a third AC signal from said traction motor.

Sous certaines variantes, l'invention concerne, par exemple, un système à unité d'entraînement électrique pour machine, pouvant comprendre : redresseur de conversion d'énergie C.A. depuis un alternateur en énergie C.C., inverseur pour réception d'énergie C.C. depuis le redresseur et alimentation de moteur de traction et/ou dispositifs auxiliaires, et par exemple également un système et un procédé pour la dissipation d'énergie excédentaire depuis une machine

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