Analysis Of Electromagnetic Coupling Heating Mechanism And Design Optimization Of Power Frequency High Voltage High Power Heater

With the continuous development of the global energy Internet,the energy structure and operating situation of modern large-scale power grids are also changing.At the same time,energy conservation and environmental protection,as a long-term development strategy of the world and the country,also put forward new requirements for the use of electrical energy.With the increasing proportion of new energy generation in modern power grids,random fluctuations in energy of the grid,grid energy storage issues,new energy consumption issues,and energy substitution issues,high-voltage and high-power electromagnetic heating equipment are all one of the very effective solutions.Therefore,related research is a hot issue that has just emerged internationally.Firstly,this dissertation proposes a technology or method based on power frequency high-power electromagnetic coupling heating.Based on the electromagnetic induction heating theory,a three-dimensional electromagnetic field simulation model was established using Maxwell's equations,the boundary conditions were determined,and the power-frequency high-power heater was simulated and magnetically analyzed to verify the correctness of the electromagnetic coupling heating mechanism.Using the electromagnetic heater simulation model,the magnetic field distribution and heat source distribution of the power-frequency highpower electromagnetic heater are analyzed,and the influencing factors and changing laws of the thermal efficiency of the heater are explored to optimize the model structure of the heater.Then,based on the power frequency high power electromagnetic heater,a power frequency high voltage high power electromagnetic heater is proposed,and the heater is designed according to the electromagnetic coupling heating mechanism,and its power quality and heating efficiency are analyzed.In order to expand the power of the single unit and adjust the power in steps,a combination of heating units with multiple heating units is used.By analyzing the operation mode of the four units,the magnetic field superposition and interaction between the heating units of different units are summarized.Finally,a new method is proposed to dynamically change the coupling degree to achieve 50% power regulation.The stepper motor is used to dynamically control the coupling degree of the magnetic field,and the continuous relationship between coupling degree and power during coupling degree adjustment is analyzed,as well as the influence on the power conversion efficiency.In order to further increase the thermal efficiency and power adjustment range,a heat sink ring structure is used to improve the heat source distribution,and the influence of the number of heat sink rings on power and efficiency is summarized to optimize the heat transfer effect.Through theoretical calculations and simulations,the results of electromagnetically coupled heaters meet the design requirements,and solve the problems of current electromagnetic heating technology,such as high energy consumption,low power of single machine,electromagnetic radiation,etc.Lowcarbon,power-frequency high-voltage high-power optimization research.