Super capacitor energy-storage type elevator driver

A technology of capacitive energy storage and supercapacitors, which is applied to elevators in buildings, systems for storing electric energy, and electrical components, etc., can solve the problems of difficult detection of feedback energy, difficult control, and increased elevator costs, etc., to achieve The effect of simple control, easy implementation, and improved safety

Inactive Publication Date: 2010-09-01
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although these devices can feed back the braking energy of the elevator to the power grid, it is still a technical problem that has not yet been fully resolved. It will have a certain negative impact on ...

Method used

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  • Super capacitor energy-storage type elevator driver
  • Super capacitor energy-storage type elevator driver
  • Super capacitor energy-storage type elevator driver

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Embodiment 1

[0032] Such as figure 1 As shown, the supercapacitor energy storage type elevator driver provided by the present invention can realize energy feedback, storage and reuse while completing the elevator drive, and its system structure includes: a diode connected to the three-phase grid 1 with three-phase uncontrollable Rectifier 2, three-phase inverter composed of IGBT anti-parallel diode modules, three-phase AC traction motor 4, voltage stabilization filter capacitor 5, super capacitor bank 6, first and second current limiting circuits 7 and 8, DC The first voltage detection circuit 9 at the side, the second voltage detection circuit 10 at the supercapacitor group end, the DC bus current detection circuit 11, the signal conditioning circuit 12, and a set of control circuits 13 with DSP as the control core.

[0033] Wherein, the three-phase uncontrollable rectifier 2 and the first current-limiting circuit 7 constitute the pre-charging circuit in the present invention, which is us...

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Abstract

The invention relates to a super capacitor energy-storage type elevator driver which mainly comprises a diode three-phase uncontrollable rectifier, a three-phase inverter, a three-phase alternating current variable-frequency motor, a voltage-stabilizing filter capacitor, a super capacitor group, a first current limiting circuit, a second current limiting circuit, a direct current side voltage detecting circuit, a super capacitor group end voltage detecting circuit, a super capacitor group current detecting circuit, a signal conditioning circuit and a set of driving and controlling circuits, wherein the diode three-phase uncontrollable rectifier is connected with a three-phase electric network, the three-phase inverter comprises IGBT (Insulated Gate Bipolar Transistor) antiparallel diode moulds, and DSP (Digital Signal Processing) is used as the control core of the set of driving and controlling circuits. The invention changes the energy-saving scheme of feeding braking energy back to the electric network, energy is stored in the super capacitor group, and on-the-spot utilization is realized, thereby not only more conveniently and efficiently realizing energy saving, but also lowering the cost of the elevator driver, improving the operating safety of an elevator, and achieving popularization and application values.

Description

【Technical field】 [0001] The invention belongs to the technical field of elevator energy saving, in particular to a super capacitor energy storage type elevator driver. 【Background technique】 [0002] According to the recent statistics and forecasts of the national special equipment authority, the number of elevators in my country has reached more than 1 million units, with an annual growth rate of more than 15%. It is the world's largest elevator producer and largest elevator consumer. At present, the total energy consumption of buildings in China accounts for 29% of the total power output, and that of western developed countries accounts for 30% to 40%. According to the energy consumption of other equipment running in the building, the energy consumption of elevators accounts for 5-15% of the energy consumption of the entire building. Elevator is a big power consumer, how to improve the energy saving level of elevator has become a topic of common concern of the country an...

Claims

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Application Information

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IPC IPC(8): B66B11/04H02J15/00
CPCY02B50/00
Inventor 万健如姚泽华周海亮阮庆军
Owner TIANJIN UNIV
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