Super-capacitor energy storage unit for elevator installations
March 21, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3914674 Electronic photographic flash apparatus Elevator battery charging control Elevator power source device Power system using battery-charged capacitors Power converter and control system for a motor using an inductive load and method of doing the same Flywheel energy storage for operating elevators Storage capacitor power supply Reserve power system Electric steering system InventorAssigneeApplicationNo. 10239948 filed on 03/21/2001US Classes:187/290, With auxiliary supply of electricity187/296Limited to power source (i.e., motor) utilizing A.C. powerExaminersPrimary: Salata, JonathanAttorney, Agent or FirmInternational ClassB66B 106AbstractElevator installations with electric drive systems are equipped with devices (10) to reduce the power supply connection rating which have energy storage units (11) which are formed entirely or partly from so-called supercapacitors (13). The device (10) according to the invention has the effect on the one hand that power peaks during starting and braking operations are compensated by the exchange of energy between the storage unit (11) and motor supply, and on the other hand that the power consumption occurring during a trip is also spread over a part of the at-rest time. Supercapacitors (13) as energy stores tolerate by comparison with electrochemically acting accumulators a much higher number of charging and discharging cycles at high values of current.Field of SearchWith auxiliary supply of electricityLimited to power source (i.e., motor) utilizing A.C. power Controls power source speed Limited to power source (i.e., motor) utilizing D.C. power Storage battery or accumulator Sources distributed along load circuit Dynamic braking Regenerative With additional source of e.m.f. Diverse sources Different voltages Different voltages By auxiliary electric generator or by magnetic attraction or repulsion devices WITH FLYWHEEL OR MASSIVE ROTARY MEMBER | |
