High-frequency high-voltage power supply for electrostatic precipitation, and control method of the same

Abstract

The invention discloses a high-frequency high-voltage power supply for electrostatic precipitation, and a control method of the same. The power supply comprises a rectification module, a high-frequency inverting module, a transformer module, a high-voltage rectification module, an upper computer monitoring and system fault diagnosis unit, a system power supply module, a remote monitoring unit and a control unit. The method is specified as follows: a three-phase AC power supply is output in DC form by a three-phase rectification and filtering circuit, then, the DC is output in high-frequency AC form by a high-frequency inverting circuit, the high-frequency AC is boosted by a high-frequency boosting transformer, finally, the boosted current is rectified into high-voltage DC by a high-frequency rectification silicon stack, and the high-voltage DC is loaded to an electrostatic precipitation load; after being treated with signal conditioning and processing, the data of inside of the power supply acquired in real time is input into the control unit for controlling the high-frequency inverting circuit so as to regulate the output of the power supply, the control unit transmits the acquired parameters to the upper computer via a CAN(Controller Area Network)bus interface, and the upper computer executes fault diagnosis, provides the current operational state of the power supply and the fault diagnosis result, and periodically transmits the state and the result to a remote terminal.

Description

technical field [0001] The invention relates to a high-frequency and high-voltage power supply and a control method for electrostatic dust removal, in particular to a high-frequency and high-voltage power supply and a control method for electrostatic dust removal with functions of real-time monitoring, fault diagnosis and remote monitoring. Background technique [0002] In recent years, my country's industrial level and scale have continued to develop, and the amount of exhaust gas emissions has gradually increased. At present, the equipment used in industrial dust removal mainly adopts industrial frequency power supply, but the dust removal efficiency is low, the power conversion efficiency is poor, the equipment is large in size, and the anti-corona suppression ability is poor. . With the further improvement of the national air pollution emission standards, the traditional industrial frequency dust removal power supply is difficult to meet the new requirements. It is urge...

AI Technical Summary

Problems solved by technology

The overall output power of high-frequency and high-voltage power supplies for electrostatic dust removal in China is not high, and the products developed are limited to low-power dust removal power supplies. As the output power of power supplies increases, the manufacturing process and control technology become more difficult. , mainly because after the output power of the power supply increases, the step-up ratio of the transformer increases, which will lead to relatively large leakage inductance and parasitic capacitance of the transformer, and the high turn ratio of the transformer also increases its energy loss and reduces the conversion efficiency of the power supply; Secondly, as the power of high-frequency high-voltage power supply increases, the current and voltage also increase, and the requirements for converters, transformers and rectifiers are also higher; in addition, in order to improve the dust removal efficiency as much as possible, the number of flashovers also increases. will increase, so the power supply is required to have a reliable ability to resist frequent short circuits

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