Abstract:
An electro-optic rearview mirror system is provided. The electro-optic rearview mirror system includes an inside electro-optic rearview mirror element and an outside electro-optic rearview mirror element in series with the inside electro-optic rearview mirror element. A drive circuit is in electrical communication with the inside electro-optic rearview mirror element and the outside electro-optic rearview mirror element and includes a first power operational amplifier and a second power operational amplifier, both of which are configured as voltage followers. The drive circuit is configured to apply overvoltage to the inside electro-optic rearview mirror element if the outside electro-optic rearview mirror element is shorted.
Abstract:
The invention relates to a method for operating an electric vehicle with a range extender, the electric vehicle having an electric drive motor, a power-generating internal combustion engine, an electromechanical energy converter and an electrical energy storage system. In this method, the actual load state of the electrical energy storage system is detected and compared with a threshold value for the load state, the threshold value being above a lower limit value, and the power-generating internal combustion engine being used to generate electrical energy when the load state detected reaches or stays below the threshold value, this generation of energy substantially stopping or at least retarding the reduction in the load state.
Abstract:
The invention relates to an electric energy dissipating system for a vehicle. An air flow producing unit provides a pressurized air flow through a fluid conduit. A polyphase electric machine runs on a predefined number of phases. The air flow producing unit is mechanically connected to, and operated by, the electric machine. An electric brake resistor arrangement is located downstream of the air flow producing unit, and comprises one resistor unit for each one of said phases. An electric power system is configured to receive electric power generated by an electric traction motor during braking of the vehicle. The power system comprises an inverter which converts a DC input into a polyphase AC output, wherein the electric machine and the resistor arrangement are electrically connected to the inverter in parallel, such that each phase of the AC output of the inverter is connected to a respective phase of the electric machine and to a respective resistor unit, in parallel.
Abstract:
Procédé de gestion de la fourniture d'énergie électrique à plusieurs équipements consommateurs (20) dans un véhicule ferroviaire (1) à partir d'un stockage d'énergie (10) embarqué, notamment lorsque le véhicule ferroviaire traverse une zone géographique dépourvue d'un réseau électrique d'alimentation, le procédé comprenant les étapes suivantes : - obtention d'au moins un paramètre d'énergie représentatif d'un niveau d'énergie disponible dans le stockage d'énergie, - pour chacun des équipements consommateurs, détermination d'un état de fonctionnement souhaité, pris parmi une pluralité d'états de fonctionnements correspondant à des niveaux de consommation électrique différents, la détermination utilisant au moins le paramètre d'énergie et optionnellement le paramètre de localisation, et - envoi à chaque équipement consommateur d'une consigne de fonctionnement selon l'état de fonctionnement souhaité. Système de gestion d'énergie et véhicule ferroviaire correspondants.