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Device and method for generating series pulse voltage

A technology of pulse voltage and generating device, which is applied in the field of series-type pulse voltage generating device, can solve the problems of increasing equipment volume and cost of isolation step-up transformer, and achieve the effect of reducing volume, saving cost and being cheap.

Active Publication Date: 2017-11-14
NANJING GUODIAN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of the isolation step-up transformer increases the size and cost of the equipment

Method used

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  • Device and method for generating series pulse voltage
  • Device and method for generating series pulse voltage
  • Device and method for generating series pulse voltage

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Effect test

Embodiment 1

[0031] In the present invention, the circuit structure of each basic resonant unit is as follows: figure 1 As shown, the input side of the three-phase rectifier bridge (1) is connected to the three-phase 380V low-voltage distribution network, the positive pole of the output side is connected to the collector of the charging IGBT (2), and the emitter of the charging IGBT (2) is connected to the current-limiting inductor (5 ), the other end of the current limiting inductor (5) is connected to the positive pole of the energy storage capacitor (6), the negative pole of the energy storage capacitor (6) is connected to the negative pole of the three-phase rectifier bridge (1), and the resonant IGBT (3 ) is connected to the positive pole of the energy storage capacitor (6). The emitter of the resonant IGBT (3) and the negative pole of the energy storage capacitor (6) serve as the output positive pole and negative pole of the basic resonance unit respectively. At the same time, in or...

Embodiment 2

[0033] figure 2 It is a pulse voltage generation system composed of three basic resonant units connected in series and then connected to an electric field load through a step-up transformer. The output positive and negative poles of the first resonant unit, the second resonant unit and the third resonant unit are connected in series in sequence, and after the series connection, the output positive pole of the first end unit and the output negative pole of the end unit are connected with a step-up transformer T 1 The primary side of the step-up transformer is connected to the primary side, and the secondary side of the step-up transformer is connected to the electric field load (C L and R L Equivalent circuit formed in parallel). The input sides of the three-phase rectifier bridges in the three units are connected in series with each other and connected to the distribution network.

[0034] figure 2 The working process of the pulse generation system shown can be divided i...

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Abstract

The invention discloses a serial-type pulse voltage generating device and method. According to the device, output positive electrodes and output negative electrodes of a plurality of basic resonant units are sequentially connected in series, wherein the positive electrodes and the negative electrodes which are connected in series are connected to the primary side of a high-frequency boosting transformer; the secondary side of the high-frequency boosting transformer is connected to a capacitive electric field load; the input ends of the basic resonant units is a three-phase rectifier bridge; the output positive electrode of the rectifier bridge is connected to the collector of a charging IGBT (Insulated Gate Bipolar Translators); the emitter of the charging IGBT is connected to one end of a current-limiting inductor; the other end of the current-limiting inductor is connected to the positive electrode of an energy storage capacitor; the negative electrode of the energy storage capacitor is connected to the negative electrode of the rectifier bridge; the cathode of a freewheeling diode is connected to the emitter of the charging IGBT; the anode of the diode is connected to the negative electrode of the energy storage capacitor; and the collector of a resonant IGBT is connected to the positive electrode of the energy storage capacitor. High output pulse voltage is obtained through serial connection of the plurality of basic resonant units, and isolation and boosting can be realized without any industrial frequency transformer.

Description

technical field [0001] The invention relates to a series pulse voltage generating device, which belongs to the technical field of power electronics. Background technique [0002] Since more than 60% of my country's electricity is provided by coal-fired thermal power plants, with the development of the national economy, the continuous growth of power generation has also brought about an increasingly serious problem of atmospheric dust pollution, prompting my country to vigorously promote electrostatic dust removal in the past ten years technology. The electrostatic precipitator power supply has experienced the development stages of industrial frequency power supply and high frequency power supply successively. In recent years, the industry has proposed a technology of superimposing intermittent pulse voltage on the basis of DC voltage, which can enhance the dust charging ability and improve the dust removal effect. The anti-corona phenomenon of specific resistance dust in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M9/04
Inventor 肖遥陈武凌雁波陈祥刘宇芳董春光黄艺曲震邱曙光李伟
Owner NANJING GUODIAN ENVIRONMENTAL PROTECTION TECH
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