静电除尘器高压电源的研究

发布时间：2018-03-11 00:00

本文选题：静电除尘器　切入点：高频电源　出处：《昆明理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：近年来,环境问题日益严重,环境保护受到各国越来越多的重视。静电除尘是一种非常有效的减少大气污染的设备,而传统工频电源耗能高、价格昂贵、除尘效率较低,已经逐渐不能满足现代除尘的要求。随着数字控制技术的发展,发展高频电源技术逐渐得到认可。首先,本文介绍了静电除尘工作原理和国内外研究的现状,分析了工频电源的特点和不足,指出高频电源是静电除尘的发展方向。分析了高频电源在理想状态和实际状态下的工作模式。在实际状态下,分为两种工作模式,比较两者的优缺点,然后选择出合适的工作模式。根据设计要求选择合适的主电路参数,将控制系统主要分为采样保护电路、PWM控制电路和驱动电路等。设计了水冷系统对高频电源进行保护。其次,根据串并联电路的电路特性,选择适合本系统调频调压的PID闭环控制方式；通过输出电压和输出电流的变化判断闪络是否发生；根据除尘器内部电场的要求,实现了三段式最佳火花率控制；水冷系统采用液体冷却柜技术对电源制冷。最后,在实习单位的帮助下,完成了实验,并记录实验数据和结果分析。
[Abstract]:In recent years, environmental problems have become more and more serious, and environmental protection has been paid more and more attention by many countries. Electrostatic dust removal is a very effective equipment to reduce air pollution, while traditional power supply has high energy consumption, high price and low dust removal efficiency. With the development of digital control technology, the development of high frequency power supply technology has been gradually recognized. First of all, this paper introduces the working principle of electrostatic dusting and the current research situation at home and abroad, and analyzes the characteristics and shortcomings of power frequency power supply. It is pointed out that high frequency power supply is the developing direction of electrostatic dusting. The working mode of high frequency power supply in ideal state and actual state is analyzed. In the actual state, it is divided into two working modes, and the advantages and disadvantages of the two modes are compared. According to the design requirements, the control system is mainly divided into sampling protection circuit and PWM control circuit and driving circuit. The water cooling system is designed to protect the high frequency power supply. According to the circuit characteristics of series-parallel circuit, the PID closed-loop control mode suitable for the frequency modulation and voltage regulation of the system is selected, the flashover is judged by the variation of output voltage and output current, and according to the requirements of the electric field inside the dust collector, The three-stage optimal spark rate control is realized. The water cooling system uses the liquid cooling cabinet technology to cool the power supply. Finally, with the help of the practical unit, the experiment is completed, and the experimental data and the analysis of the results are recorded.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：X701.2;TN86

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