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CONTROL SYSTEM FOR AN ELEVATOR APPARATUS

  • US 20110100760A1
  • Filed: 06/24/2009
  • Published: 05/05/2011
  • Est. Priority Date: 06/24/2008
  • Status: Active Grant
First Claim
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1. A control system for an elevator apparatus comprising a car or the like, which is movable between a lower level or floor and an upper level or floor, and driven by an a.c. reversible electrical machine with the energy provided by a source, and controlled through a first inverter;

  • the system comprising energy storage means coupled to said first inverter and controlled through a second inverter, and adapted to store energy generated by said electrical machine and energy coming from the source and optionally not used by said machine, as well as to deliver the stored energy towards said machine when the latter requires a power higher than a threshold;

    the system being characterized in that it is arranged to automatically cause a lifting of the car up to the upper floor when preset conditions occur in a time interval of inactivity of the elevator apparatus.

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