Controller scheduling constant current charging of a rechargeable power source of an elevator system
February 20, 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 3585482 Backup power circuit Elevator battery charging control Control apparatus for A.C. elevator Device for driving elevator at service interruption Elevator control system Flywheel energy storage for operating elevators Control of regeneration energy from an electric motor Method for controlling rescue operation of elevator car during power failure Apparatus and method for controlling operation of elevator in power failure Patent #: 6315081 InventorsAssigneeApplicationNo. 785233 filed on 02/20/2001US Classes:187/290, With auxiliary supply of electricity187/296Limited to power source (i.e., motor) utilizing A.C. powerExaminersPrimary: Salata, JonathanAttorney, Agent or FirmForeign Patent References
International ClassB66B 001/06Foreign Application Priority Data2000-02-28 JPAbstractA controller of an elevator for reducing the number of execution times of uniform charging of a power accumulating device and having higher energy saving effects. The controller has a converter, an inverter, a power accumulating device arranged between DC buses, a charging-discharging control circuit for controlling charging and discharging operations of the power accumulating device, and a charging-discharging state measuring device for measuring at least one of temperature, charging and discharging currents, and charging and discharging voltages of the power accumulating device. The charging-discharging control circuit sets the execution of uniform charging of the power accumulating device on the basis of an output of the charging-discharging state measuring device, and executes only the required uniform charging. Thus, an elevator with the power accumulating device having larger energy saving effects is constructed.Field of SearchWith auxiliary supply of electricityHAVING COMPUTER CONTROL OF ELEVATOR Controls power source speed Limited to power source (i.e., motor) utilizing A.C. power With specific electrical component Dynamic braking Regenerative Substitute or emergency source Storage battery or accumulator BATTERY OR CELL DISCHARGING Cycling (e.g., discharge/charge cycle, etc.) With battery or cell condition monitoring (e.g., for protection from overcharging, heating, etc.) Regulated discharging | |
