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Elevator regenerative power-saving device

A technology of power-saving devices and elevators, which is applied in the direction of harmonic reduction devices, elevators in buildings, electrical components, etc., and can solve problems such as waste of electric energy and rich harmonics

Inactive Publication Date: 2011-04-06
上海闰午节能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of electric energy waste and abundant harmonics in the prior art, and provide an elevator regeneration energy-saving device with simple and practical structure, low cost, fully automatic operation, and remarkable energy-saving effect

Method used

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Examples

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Embodiment Construction

[0009] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0010] Referring to the accompanying drawings, taking an elevator control cabinet with a frequency converter of 380V 50HZ 15KW as a reference, the elevator regenerative energy-saving device includes a capacitor switch (10), a supercapacitor and an auxiliary circuit (20), a control circuit ( 30), a filter inductor (40), a converter (50) for harmonic control, an electrolytic capacitor (60), and a filter capacitor (70) for harmonic control. The DC end of the frequency converter is connected to the input end of the capacitor switch (10), the output end of the capacitor switch (10) is connected to the input end of the supercapacitor and the auxiliary circuit (20), and the external power supply is connected to the output end of the filter inductor (40). The input end of the filter inductor (40) is connected to the AC interface end of the harmonic c...

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Abstract

The invention relates to an elevator regenerative power-saving device, belonging to the field of power control technology and comprising a capacitor switch (10), a supercapacitor and an assistant circuit (20), a control circuit (30), a filter inductor (60), an electrolytic capacitor (60) and a harmonic suppression filter capacitor (70). By applying the elevator regenerative power-saving device of the invention to elevator control cabinet, two energy-saving methods, i.e. harmonic suppression and electric energy regeneration, can be realized simultaneously, and generally, 20% to 60% of power-saving effect can be obtained. The elevator regenerative power-saving device of the invention is simple and convenient in structure, intuitional in measurement and prominent in power-saving effect, and has extensive application prospect in elevator power saving.

Description

technical field [0001] The invention relates to an elevator regeneration power-saving device, which belongs to the technical field of electric power control, in particular to an electric power control device which simultaneously uses active filtering technology and power regeneration technology to save power. Widely applicable to all kinds of elevators. Background technique [0002] With the development of power electronics technology, the elevator circuit system generally uses frequency converters to control the motor. However, the use of frequency converters also produces harmonics, which have a great impact on the AC grid, seriously affect the quality of power supply, cause the system to heat up, cause additional power loss and pose a threat to grid security. However, when the elevator equipment is under the working conditions of light-load uplink, heavy-load downlink, and leveling parking, the motor is in the power generation state. At this time, the inverter will consu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J15/00H02J3/01B66B11/00
CPCY02E40/40
Inventor 张俊裕
Owner 上海闰午节能科技股份有限公司
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