High frequency and high voltage DC superimposed high voltage pulse power supply for electrostatic precipitator

Abstract

A high-frequency high-voltage DC superimposed high-voltage pulse power supply for an electrostatic precipitator, including a high-frequency high-voltage DC power supply, a high-voltage pulse power supply and a coupling circuit; the high-frequency high-voltage DC power supply includes a three-phase diode full-bridge uncontrolled rectification, a high-frequency IGBT full-bridge inverter LC filter, high-frequency transformer and single-phase diode full-bridge uncontrolled rectification circuit; high-voltage pulse power supply includes three-phase bridge uncontrolled rectification, low-voltage charging and discharging pulse forming circuit, pulse transformer, high-voltage charging and discharging voltage-controlled switch compression pulse Loop, transmission line voltage doubler loop; coupling circuit includes DC side inductance, anti-reverse diode, protection resistor and pulse side capacitor. The rapping device is equivalent to a parallel connection of a small capacitor and a large resistor, and a pulse voltage with a high-voltage DC bias of 200 Hz, a rising edge of nearly nanoseconds, and a pulse width of a subtle level is generated on the rapping device, which can effectively suppress back corona , can effectively remove dust with high specific resistance dust, and has a good power-saving effect compared with existing dust collectors.

Description

technical field [0001] The invention relates to electric dust removal, in particular to a high-frequency high-voltage DC superimposed high-voltage pulse power supply for electric dust removal. Background technique [0002] With the continuous improvement of my country's industrialization level, air pollution has become more and more serious, especially the continuous occurrence of smog in recent years, which has sounded the alarm for my country's economic development mode. In order to control air pollution, the state continues to introduce more stringent policies and industry standards. The latest "Thermal Power Air Pollution Emission Standard" (GB13223-2011) raises the smoke and dust emission standard of thermal power plants to 30mg / m 3 , key areas even require less than 20mg / m 3 , This is a huge test for thermal power plants that account for more than 60% of the power generation in my country. It is difficult for traditional electrostatic precipitators to meet such strict...

AI Technical Summary

Problems solved by technology

In order to control air pollution, the state continues to introduce more stringent policies and industry standards. The latest "Emission Standards for Air Pollution from Thermal Power Plants" (GB13223-2011) raises the smoke and dust emission standards for thermal power plants to 30mg / m 3 , key areas even require less than 20mg / m 3 , this is a huge test for thermal power plants that account for more than 60% of the power generation in my country. It is difficult for traditional electrostatic precipitators to meet such strict requirements, so traditional electrostatic precipitators must be replaced

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