High frequency and high voltage electrostatic precipitator power supply and its control and protection method

Abstract

The invention discloses a high-frequency high-voltage electrostatic dust collection power source which comprises a power transformer, three-phase rectifier filter circuits, a high-frequency inversion circuit, an LCC resonance circuit, a high-frequency pulse transformer, high-voltage rectifying circuits, a control circuit and a driving circuit. The output ends of three secondary windings of the power transformer are connected with the input ends of the corresponding three-phase rectifier filter circuits respectively, the three-phase rectifier filter circuits are connected with the high-frequency inversion circuit, the LCC resonance circuit, the high-frequency pulse transformer and the high-voltage rectifying circuits sequentially, and the output ends of the three high-voltage rectifying circuits are in series connection and then boosted to supply power to a deduster body. The high-frequency high-voltage electrostatic dust collection power source improves circuit output voltage, effectively eliminates pollution to a power grid caused by harmonic cancellation and reduces circuit loss.

Description

technical field [0001] The invention relates to an electrostatic precipitator power supply, in particular to a high-power, high power factor, high-frequency, high-voltage electrostatic precipitator power supply for electrostatic precipitator, which belongs to the technical field of power electronic equipment. Background technique [0002] In recent years, with the development of my country's industrial level and the continuous expansion of scale, the emission of exhaust gas has also gradually increased. These smoke and dust carry a large amount of harmful substances into the atmosphere, seriously affecting the ecological environment and human health. At present, the power supply used for dust removal is mainly industrial frequency voltage. This kind of power supply has low conversion efficiency, unbalanced input, large voltage fluctuation, low dust removal efficiency and more power consumption. In 2011, the relevant state departments jointly issued a new emission standard f...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-frequency and high-voltage electrostatic precipitator power supply, which solves the problem that the output voltage amplitude of the electrostatic precipitator power supply in the prior art is limited, the voltage level cannot be further increased, and the harmonics generated by the power supply opening and closing pollute the power grid. and other technical issues

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