Emergency current supply equipment for lift installations

B - Operations – Transporting – 66 – B

Patent

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B66B 5/02 (2006.01)

Patent

CA 2400762

The invention relates to emergency power supply devices (10) for lift systems. The inventive devices comprise electromotor drives, short-circuit momentary system voltage drops or system voltage interruptions and supply all components of the lift system with energy as long as the lift is in use, until the lift reaches a floor level and when the network supply fails, whereby said components are required for moving the lift for an evacuation. The energy storage unit (11) used therefore exclusively contains capacitors in the form of super capacitors (13) or a combination of super capacitors (13) and electrochemically acting accumulators (14) as the storage medium.

La présente invention concerne des dispositifs d'alimentation de secours (10) pour installations d'ascenseur comprenant des systèmes d'entraînement à moteur électrique. Ces dispositifs doivent surmonter les chutes ou les coupures temporaires de tension du réseau et, si l'alimentation du réseau tombe en panne et que l'ascenseur est en train d'effectuer un trajet, ces dispositifs doivent alimenter en énergie tous les composants de l'installation d'ascenseur qui sont nécessaires au trajet d'évacuation, jusqu'à ce que l'ascenseur arrive au niveau d'un étage. L'unité d'accumulation d'énergie utilisée à cette fin (11) peut être exclusivement constituée de condensateurs se présentant sous forme de supercondensateurs (13) ou d'une combinaison de supercondensateurs (13) et d'accumulateurs électrochimiques (14).

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