Study On Power Supply Based On Cuk Converter Of Pusle Solid-state Laser

The main content of this thesis is about new type power supply of pulse solid-state laser. With the development of the laser processing technology, solid-state laser plays a very important role in industry application. Power supply is the one of the main parts of the laser, therefore taking the research of the power supply of pulse solid-state laser is very significant. Firstly, the load characteristic of the pulse solid-state laser is analyzed ,and the ideal output characteristic of the power supply is obtained. Then analyze the principle of the traditional power supply and indicate their disadvantage. Devise a new power supply of pulse solid-state laser based on CUK PWM DC/DC converter, which has ideal output characteristic of constant-voltage-restrict-current. The principle of the main circuit, control method and protective circuit is described. Theoretical analysis proves that the new power supply has high performance such as high accuracy, high efficiency, low input ripple current, excellent EMC characteristic, light weight and low cost compared with the traditional laser power supply. The mathematic model of the CUK PWM DC/DC converter is made by state-space method, Simulink and Pspice simulation results are given in detail and all of the parameters are set by real working conditions. Based on theoretical analysis and simulation results, the design procedure to the main circuit and control circuit of the laser power supply is discussed. The experiment results show that the power supply of pulse solid-state laser has excellent electrical characteristic as the theoretical analysis and simulation results have proved. In the end, summarize the experience in the experiment and draw some conclusions as reference for further research.