Pulsed power supply for electrostatic dust collection and generation method of pulsed power supply

Abstract

The invention relates to the field of power circuits. The invention discloses a pulse power supply for electrostatic dust removal, which includes an intermittent pulse generating circuit and a narrow pulse generating circuit, the intermittent pulse generating circuit includes a three-phase thyristor and a three-phase step-up rectifier circuit, the three-phase thyristor The control end of the three-phase boost rectifier circuit is connected to the controller, the input end of the three-phase boost rectifier circuit is connected to the three-phase three-phase AC power supply through the three-phase thyristor, and the output end of the three-phase boost rectifier circuit is connected with the narrow pulse to generate The output end of the circuit is connected in series between the dust collection electrode and the discharge electrode of the electrostatic precipitator, and the dust collection electrode of the electric precipitator is grounded, so that the pulses of the intermittent pulse power supply generated by the intermittent pulse generation circuit are synchronously superimposed in series The pulse of the narrow pulse power supply generated by the pulse generating circuit is applied between the dust collecting electrode and the discharging electrode of the electrostatic precipitator. The invention also discloses a method for generating a pulse power supply for electrostatic dust removal. The invention has high dust removal efficiency, less energy consumption, easy circuit realization and low cost.

Description

technical field [0001] The invention belongs to the field of power circuits, and in particular relates to a high-efficiency and energy-saving pulse power supply for electrostatic dust removal and a generating method thereof. Background technique [0002] In recent years, large-scale smog events have occurred frequently across the country, and haze control has become a national strategy and a hot issue for the whole society. Among them, coal-fired power plants, iron and steel smelting, cement kilns and other industrial smoke and dust are one of the main sources of air pollutants. On September 10, 2013, the State Council publicly released the "Action Plan for the Prevention and Control of Air Pollution". Ultra-low emission and energy-saving transformation are important measures to promote the clean utilization of coal, improve the quality of the atmospheric environment, and alleviate resource constraints. [0003] The electrostatic precipitator has the characteristics of hig...

AI Technical Summary

Problems solved by technology

[0007] 1) If the output power of the pulse power supply and the transient pulse current reach more than 3C, the required primary transient switching current can reach more than 10kA, which is difficult to achieve in terms of technology and process

[0008] 2) The withstand voltage level of the coupling capacitor at the pulse high-voltage end is proportional to the volume, and there are also process bottlenecks in the withstand voltage level and device volume of the high-voltage end coupling capacitor

[0009] 3) The basic voltage is a pure DC voltage, increasing the basic voltage will increase power consumption, which cannot fully reflect the energy consumption advantages of pulse power supply

[0010] For this reason, the published patent: CN105080722A proposes that the pulse power supply and the basic DC power supply are superimposed in series and then dust removal is performed between the dust collection electrode and the discharge electrode of the electrostatic precipitator, which solves the above-mentioned problems of parallel superposition, but due to its basic power supply Using DC power supply, large energy consumption

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