The Development And Intelligent Optimization Of High-Power High-Frequency High-Voltage Power Supply For ESP

At present,the haze weather caused by harmful material emissions such as dust,has seriously affected human health and ecological environment,therefore it is imperative for industrial exhaust gas dedusting.The common ways of dust removal are divided into electrostatic dedusting,filtration dust removal,washing dedusting,compared with other methods,electrostatic precipitator has obvious advantages.Common power supplies for electrostatic precipitator are mainly divided into two: Frequency power and high-power high-frequency power supply.For it's high collection efficiency,low loss,intelligent control,small size,etc.High-power high-frequency high-voltage electrostatic precipitator attracts more attention and research,and favored by the market.In this paper,combined with Jiangsu Science and Technology Support Program to carry out high power high frequency high voltage power supply of electrostatic precipitator research.The main contents are as follows:First,the author analysises and designs the main circuit of the power system.The main circuit analysis and design includes the analysis and selection of resonant converter,the selection of different modules of the circuit and related components.In this paper,by comparing the advantages and disadvantages of different resonant converter,and consider the distributed capacitance and leakage inductance of the transformer,the LCC resonant converter as the topology,and design the rectifier circuit,the filter capacitor,inverter circuit,snubber circuit and high voltage rectifier circuit of the main circuit.Secondly,in this thesis,combined with the corresponding main circuit,analysis and design the control system of high-power high-frequency power supply for electrostatic precipitator,including hardware design and software design.Hardware circuit design includes: DSP control board design,analog board design;digital board design;driver board design.Show the flow chart and the relevant part of the program code in the software design part.Again,in this paper,design and intelligent optimization the high frequency high voltage transformer and analysis the design process of the transformer.Firstly,set the mathematical model of the transformer,then through genetic algorithms by using the number of turns of the primary and layers of secondary as optimization variables to optimize transformer.Which maximize the efficiency and minimize the loss of the transformer,meanwhile,analyze the temperature distribution of transformer,using the actual parameters of the transformer to calculate the power loss of primary,secondary and core of transformer.Using ANSYS software to simulate high-frequency high-voltage transformer thermal simulation and optimize the cooling system of transformer.By comparing the parameters of actual transformer,the optimization of the design of the proposed method showed a certain production guidance.Finally,test the power system on both plant and field,and gives relevant waveforms.Commissioning in the factory including drive circuit testing,simulated load test etc.analyze and summarize all kinds of issues that arise during field commissioning,and gives the relevant solutions.The test results show that the high-frequency power supply system is stable,better performance and achieved the desired objectives.