Design And Implementation Of High-power High-frequency High-voltage Power Supply For ESP

Electrostatic precipitator is an important device in environmental protection industry which plays an important role in the recycling of dust.As the shortcomings of frequency power supply like bulky,inefficient and so on.We design the high-frequency high-voltage power supply for Electrostatic precipitator which has a low output voltage ripple,high efficiency in dust removing.The main study of this paper as follows:Firstly,from the point of the engineering Application gives the hardware circuit of high frequency high voltage electrostatic precipitator power supply.Hardware system includes two parts: the main circuit and control circuit.The main circuit design starts from the parameters calculation of modules and the selection of modules.The Related t circuits include rectifier filter circuit,an inverter circuit,driver circuit and the boost rectifier circuit.According to the high-frequency power supply design requirements,we also design the control circuit which base on the TMS320F2812 DSP.In this paper,we elaborate from the calculation of the parameters,component selection and circuit design and other aspects of the control circuit.The control circuit includes: DSP core control circuit,analog and digital acquisition conditioning circuit.Secondly,according to the requirements of power supply system,design the software of system,including core control program and HCI design.Give the system's main design flow,pulse generation mechanism,fault detection and treatment,power protection mechanisms,spark detection and treatment methods and rapping process.Introduce the design method of monitoring system.Thirdly,targeting the high frequency power supply system,designed a novel fuzzy sliding mode controller.Analysis the work state of series and parallel resonant circuit,design the average large-signal dynamic model of the system,on the basis of this derived the sliding mode control.Adjusting the parameters of sliding mode control via fuzzy control,obtain a fuzzy sliding mode controller for the closed-loop control of system.Through MATLAB simulation verify the effectiveness of controller.Finally,complete the plant and field experiments for the designed power supply.The plant experiments including experiments with resistive load and resistive-capacitive load.Give the key signal waveforms and analysis of the plant testing results.In the Field experiment,give the specific processes,the experimental data and experimental waveforms.Experimental results show that the high-frequency high-voltage power supply could be reliable and stable operation,reliable and stable operation,achieved the desired design requirements.