A new type of energy-saving elevator system and its constant power operation control method

Abstract

The invention discloses a new energy-saving elevator system and its constant power operation control method, wherein the new energy-saving elevator system includes an elevator car, a counterweight box, a variable counterweight device, a connecting chain, a variable speed drive device and a control system, wherein : The elevator car is equipped with a weighing device, and the variable counterweight device is located on the top of the elevator shaft; the variable speed drive device includes a traction motor and a transmission connected to the traction motor, and the output shaft of the transmission is connected to the traction wheel. ; The connecting chain bypasses the speed change and the traction sheave in the driving device, and the two sides of the connecting chain are respectively connected to the car and the counterweight box. The present invention can change the weight of the counterweight box and the transmission speed ratio at the same time, thereby indirectly adjusting the output torque of the traction machine, keeping the output power of the traction motor near the rated power, so that the performance of the motor can be optimized, reducing Unnecessary loss ultimately achieves the effect of reducing the energy consumption of the elevator.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to a novel energy-saving elevator system and a constant power operation control method thereof. Background technique [0002] With the development of the economy, the demand for energy is getting higher and higher, and the shortage of energy has become one of the main factors restricting the development of various fields. According to the statistics of the energy consumption of other equipment running in the building, the energy consumption of elevators accounts for 5% to 15% of the energy consumption of the whole building, second only to the electricity consumption of air conditioners and higher than the electricity consumption of lighting and water supply. become the second largest energy-consuming equipment in high-rise buildings. It is an inevitable trend in the development of the elevator industry to use appropriate energy-saving technology for energy-saving treatment of ele...

AI Technical Summary

Problems solved by technology

[0006] The above technical solutions can achieve a certain energy-saving effect through improvement, but none of them have been improved from the perspective of keeping the traction machine running at the rated power to achieve the purpose of energy saving

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