A gravity potential energy recovery energy saving device for traction elevator and elevator system

Abstract

The present application belongs to the technical field of elevator energy-saving device, and relates to a gravity potential energy recovery and energy-saving device for traction elevator and an elevator system, a plurality of turns of steel wire rope are wrapped around a second pulley, the second pulley is drivingly connected to an output shaft of an electrically excited synchronous motor, the second pulley is rotatably installed on a counterweight frame, a housing of the electrically excited synchronous motor is fixedly connected to the counterweight frame, a super capacitor, a controller and an adjusting counterweight are further arranged on the counterweight frame; the second pulley is drivingly connected to the electrically excited synchronous motor; the electrically excited synchronous motor is electrically connected to the super capacitor and the controller, and the super capacitor is electrically connected to the controller; the controller is used for determining and controlling whether the operation mode of the electrically excited synchronous motor is a generator or a motor; the fixed counterweight of the conventional elevator is improved into a combined counterweight structure integrated with the super capacitor and a power conversion assembly, the electrically excited synchronous motor is switched between the power generation mode and the motor mode under different working conditions, and the dynamic recovery and reuse of the gravity potential energy of the elevator are realized.

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