Patent ID: 8083033
Filing Date: 2011-12-27
Classification: B66B,Y02B

Abstract:
1. An elevator system, comprising: an elevator group, which comprises at least two elevator cars, the elevator cars being fitted to be moved in the elevator hoistway, according to calls allocated by control of the elevator group; a power supply arrangement, for adjusting power needed to move the elevator cars, to which power supply arrangement an energy storage is connected; the energy storage being fitted in a first operating situation to yield energy for use in moving the elevator car and in a second operating situation to receive energy released by movement of the elevator car; a determination of a charging status of the energy storage; wherein the control of the elevator group is fitted to determine a change in energy that would be caused by the movement according to an allocated call of the elevator cars belonging to the elevator group; and wherein the control of the elevator group is fitted to allocate a call by favoring in the allocation an elevator car, the determined change in energy caused by the movement of which best meets the allocation criterion, wherein the allocation criterion is determined according to the charging status of the energy storage.