Power source as an energy saver and emergency power source in an elevator system

一种电梯系统、电能的技术，应用在电梯的能源效率、运输和包装、可持续建筑等方向，能够解决高设备成本、装置质量问题等问题，达到简单可靠成本、维护需要小、长服务寿命的效果

Inactive Publication Date: 2007-06-20
KONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This further leads to quality issues due to the complex nature of the device, as well as high equipment costs

Method used

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  • Power source as an energy saver and emergency power source in an elevator system

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Embodiment Construction

[0030] In the present invention, a supercapacitor bank providing high voltage is connected as a power source in an elevator system by using a simple switch assembly. Because ultracapacitors are becoming less expensive and they can produce high output voltages, they are ideal for use as energy storage in elevator systems. The ultracapacitors are preferably connected to the elevator system through an electromechanical solution, so that the development costs for applications compatible with different output power levels and / or different energy storage capacities will be small.

[0031] The electrical energy store of the invention and the associated switch arrangement and other circuit components required are shown in FIG. 1 .

[0032]In the circuit diagram in Fig. 1, a bank of ultracapacitors 19 supplying high voltage is connected to the power supply of the motor 13 of the elevator system. Ultracapacitor bank 19 includes a combination of multiple ultracapacitors, where the capac...

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Abstract

The present invention describes a method and an apparatus for storing electric energy needed in an elevator system into a supercapacitor. Furthermore, the invention can be used as a source of reserve power in emergency situations, such as power failures. The supercapacitor is connected together with three switching branches to a rectified signal of the power supply of the motor. By closing and opening the switches, the supercapacitor can be charged when the motor load is small. When the motor load is large or when the power supply fails, the electric energy contained in the supercapacitor can be discharged for use by the motor. In an emergency, the motor drives the elevator at a speed lower than normal and therefore a supply voltage lower than normal is sufficient. Also, energy obtained from braking of the elevator can be stored in the supercapacitor, which has a storage capacity of considerable magnitude as compared to an ordinary capacitor. By applying the invention, the energy consumption of the elevator can be reduced because the waste energy obtained from the power supply can be stored and utilized when more energy is needed.

Description

technical field [0001] The present invention relates to the power supply required in elevator systems. Background technique [0002] For the operation of the elevator system, a reliable power supply system is required. Typically, the supply of electrical power is derived from conventional mains current and the acquired electrical energy may be converted to the desired voltage level by means of a transformer. An uninterrupted supply of electrical power is required for the error-free operation of elevator systems, since the nature of elevator systems is such that a power failure may cause an elevator carrying passengers to stop between floors, thus putting it in a dangerous situation. Therefore, the elevator system is equipped with a backup power supply for supplying electrical energy in case of emergency. [0003] The state of the art emergency power sources used hitherto in elevators are batteries and / or safety circuits. The batteries used are typically lead-acid batterie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/02B66B1/30B66B
CPCB66B1/30B66B1/302Y02B50/142B66B1/308Y02B50/00
Inventor 佩卡·杰科南
Owner KONE CORP
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