The Research Of The Control Of The High-frequency And High-voltage Electrostatic Precipitator Power Based On STM32

From an environmental point of view, in the industry, the electrostatic precipitator has a critical role, especially in the steel plant or the power plant. As environmental standards become more strict, the past industrial frequency electrostatic precipitators have been on the verge of elimination. Advantages of power sources of high-frequency and high-voltage electrostatic precipitators appear more obvious. It can improve the efficiency of the power supply and ESP, reducing the power consumption of the power source and so on. In this paper, the experimental subject is the soft steady power source of the high-frequency and high-voltage electrostatic precipitator, produced in Sanger Electric Control Equipment Co. of Qinhuangdao, showing a lot of researchs on the control of the electrostatic precipitator power source, as follows:Firstly, introduce the working principle of the electrostatic precipitator and describe advantages of power sources of the high-frequency and high-voltage electrostatic precipitator compared to others, pointing out the development direction of power sources of the electrostatic precipitator. Point out how the core parts of the power source of the high-frequency and high-voltage electrostatic precipitator work specifically. Briefly introduce the specific control methods of the power source.Secondly, study deep in how to use STM32 to drive the power source of the high-frequency and high-voltage electrostatic precipitator to generate the high-frequency signal—PFM. Describe in detail how to achieve the drive signal’s synchronization and frequency’s automatic change, exclude issues of incomplete waveform and different cumulative numbers of positive pulses when the frequency of the signal changes. Describe how to achieve the methods of closed-loop control and flashover control in the control systems of the electrostatic precipitator: In order to achieve closed-loop control, use the method of incremental PI to control the output voltage; judge whether the flashover occurs by detecting the output voltage and output current; design the rational method of the flashover handle.Finally, summarize the research and development results of this project, and point out the deficiencies of work.