Energy-saving device for elevator

An energy-saving device and elevator technology, which is applied in the direction of circuit devices, battery circuit devices, current collectors, etc., can solve problems such as energy consumption, power loss, and ineffective effects

Pending Publication Date: 2017-03-15
天津市升阳电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] figure 1 A simplified diagram of the existing elevator power supply structure is given. When the car moves upwards relative to the counterweight, the motor drives the car to move upwards. consume

Method used

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  • Energy-saving device for elevator

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Embodiment Construction

[0009] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0010] Such as figure 1 As shown, an elevator energy-saving device includes an elevator inverter connected to a power supply, a control device and a supercapacitor; the supercapacitor is connected in parallel on the elevator inverter; the control device is connected with the supercapacitor, for When the counterweight runs downwards, the connecting branch of the supercapacitor is turned on to charge the supercapacitor; when the elevator car moves upwards relative to the counterweight, the control device controls the supercapacitor to discharge first for the car to run upwards. When the capacitor discharge cannot satisfy the elevator operation, the control device connects the elevator frequency converter to supply power for the operation of the car. The supercapacitor is a DC-DC power conversion module connected in p...

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PUM

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Abstract

The invention discloses an energy-saving device for an elevator. The energy-saving device comprises an elevator frequency converter connected to a power supply, a control unit, and a super capacitor connected in parallel to the elevator frequency converter. The control unit connected to the super capacitor is used for realizing conduction with a connection branch circuit of the super capacitor when a car of an elevator moves downwardly relative to a counter weight, thereby charging the super capacitor. When the car of the elevator moves upwardly relative to the counter weight, the control unit controls the super capacitor carries out discharging to realize upward operation of the car; when the super capacitor completes the discharging, the control unit is connected to the elevator frequency converter to provide power for the car operation. The super capacitor includes a DC-DC power conversion module connected in parallel to the elevator frequency converter and a capacitor connected to the DC-DC power conversion module. Using the energy-saving device, the 30 to 40% of power can be saved on the condition of maintaining normal operation of the elevator.

Description

technical field [0001] The invention relates to an elevator energy-saving device. Background technique [0002] figure 1 A simplified diagram of the existing elevator power supply structure is given. When the car moves upwards relative to the counterweight, the motor drives the car to move upwards. expend. Although there is currently a technical solution for connecting the charging and discharging circuit in series with the consuming resistor in order to reduce energy consumption, the effect is not outstanding. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides an elevator energy-saving device, which can effectively save electricity by 30-40% while maintaining the normal operation of the elevator. [0004] An elevator energy-saving device, comprising an elevator frequency converter connected to a power supply, a control device and a supercapacitor; the supercapacitor is connected in parallel with the elevato...

Claims

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Application Information

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IPC IPC(8): H02J7/34
CPCH02J7/345
Inventor 耿洪奎
Owner 天津市升阳电子科技有限公司
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