Energy efficient variable speed drive for elevator systems

B - Operations – Transporting – 66 – B

Patent

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Details

B66B 1/28 (2006.01)

Patent

CA 2554269

An improved system of variable speed drives that enhances the energy efficiency of an elevator system by enabling power transfer between the variable speed drives of two or more elevators via a common DC bus. Any combination of regenerative and non-regenerative variable speed drives may be used with the present invention. Energy storage devices may be connected to the common DC bus further improve efficiency.

L'invention concerne un système perfectionné d'entraînements à vitesse variable permettant d'accroître le rendement énergétique d'un système d'ascenseur, en permettant un transfert de puissance entre les entraînements à vitesse variable d'au moins deux ascenseurs, au moyen d'un bus CC commun. Toutes les combinaisons d'entraînements à vitesse variable régénératifs et non génératifs, peuvent être utilisées avec la présente invention. Des dispositifs de stockage d'énergie peuvent être reliés au bus CC commun pour accroître encore le rendement énergétique.

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