Energy saving system of elevator

Abstract

The invention discloses an energy saving system of an elevator. In the system, a super capacitor group is utilized as a regenerative braking energy storage device of an elevator sub-system and a power supply source for operating the elevator sub-system, energy is stored in the braking process of operating the elevator sub-system, a power source switching control circuit is controlled by a system controller to realize the switching between the super capacitor group and an external alternating current network for supplying the electricity to the elevator sub-system so as to achieve the purpose of saving energy. The system fully utilizes the characteristics of heavy current discharge of a super capacitor, lowers the requirements on the level of the external alternating current network and can synchronously satisfy a peak value power generated when the elevator sub-system is operated, and the super capacitor presents the advantages of long service life, short charging and discharging time, large capacitance density and the like. The system saves energy and synchronously improves the safety of the elevator operation and has very high social benefit and economic benefit.

Description

technical field [0001] The invention belongs to the field of elevator application and energy saving, in particular to a novel elevator energy saving system which uses a supercapacitor bank to store the regenerative braking energy of an elevator to provide power for the operation of an elevator system or feed back to a power grid. Background technique [0002] With the development of modern technology and the improvement of people's living standards, the use of elevators is becoming more and more popular, especially in modern big cities, high-rise buildings have become the mainstream, and elevators suitable for high-rise buildings are growing rapidly, bringing people's lives Great convenience. At the same time, more and more people have noticed that the use of elevators has an important negative impact, that is, energy consumption. The braking energy generated when the elevator decelerates upwards and accelerates downwards during the operation of the elevator is usually cons...

AI Technical Summary

Problems solved by technology

[0006] At present, there have been corresponding studies on using supercapacitors as backup power and auxiliary power, but all of them are only using supercapacitors as backup power for the system for emergency use, or as auxiliary power when the elevator is started. obvious

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