Novel energy-saving elevator system and constant power operation control method thereof

Abstract

The invention discloses a novel energy-saving elevator system and a constant power operation control method. The novel energy-saving elevator system comprises an elevator car, a counterweight box, a variable counterweight block device, a connecting chain, a variable speed driving device and a control system, wherein a weighing device is arranged on the elevator car, and the variable counterweightblock device is located at the top of an elevator shaft; the variable driving device comprises a traction motor and a transmission connected with the traction motor in a transmission mode, and an output shaft of the transmission is connected with a traction wheel in a transmission mode; and the connecting chain bypasses the traction wheel in the variable speed driving device, and the two sides ofthe connecting chain are correspondingly connected with the elevator car and the counterweight box. According to the novel energy-saving elevator system, the weight and the transmission variable speedratio of the counterweight box can be simultaneously changed, thus the output torque of a traction machine is indirectly adjusted, the output power of the traction motor is basically kept near the rated power, the performance of the motor is optimized, the unnecessary loss is reduced, and finally the effect of reducing energy consumption of the elevator is achieved.

Description

technical field [0001] The invention relates to the technical field of motors, 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 energy consumption of other equipment operating in the building, the energy consumption of elevators accounts for 5% to 15% of the energy consumption of the entire 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 to save energy on elevators. At pres...

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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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