Researches On The Charging Converter Of High Power Pulsation Laser Power Supply

This thesis based on capacitor charging from the net, which is the important part of the task of pulse laser power supply system that author has participanted in. High power constant charging pulse laser supply has been researched on the thesis. The researching power supply is researched on applying high power pulse energy for the laser system, which input from the net can realize constant current charging for energy storage capacitors, satisfied the characteristics such as high charge woltage, limitation of charge time, low charge current and high power ect. The technology of high voltage power constant charging is underdeveloped in China at present. In this thesis, high voltage power constant charge switching power supply has been researched by using theoretical analyses and numerical simulation. The development of pulse laser supply at home and abroad, the development of power electronics technology and its applications in the laser industry has been introduced simply.Several typical types of capacitor charging mode have been analysised, their operation principles were explained particularly, their advantages and disadvantages were compared as well. The mode of LC resonant constant charging was used to this power supply system. In regard to the choice of the structure, few different high voltage charging circuits were also compared, and the pulse laser power supply system's structure were made certain at last.Then, the whole pulse laser power supply system's resonant operation principles were detial presented, which can reach the goal of constant charging. Various parameters in the main circuit were calculated.meanwhile, it is very important to design the high-frequency transformer. The theory analysis of the LC resonant constant charging in the pulse power supply was verified by emulating to the charging system with the MATLAB Simulink.To boost the stability of the high voltage, large capability capcitors, improve charge precision in order to meet the perfect constant charge effect, control scheme based on the DSP TMS320LF2407 control chip was adopted to control the laser supply system. The control idea and strategy, realization of the hardware and sofeware were detail introduced in this thesis.