A high precision electron beam welder power supply based on buck-boost converter using fuzzy PID control  

作　　者：何少佳 李建玲 莫金海 李海标 

机构地区：[1]School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guilin,541004

出　　处：《China Welding》2012年第1期64-69,共6页中国焊接（英文版）

摘　　要：A novel electron beam welder （ EBW） power supply was developed. Compared with the traditional 3-phase contrail 12-pulse rectifying supplies, it requires a much lower step-up ratio transformer, but a much less output ripple voltage can be obtained. The design of the main circuit of this new power supply is based on PWM buck-boost converter topology. In developing the system a fuzzy PID control method is adopted because of the strong non-linearity and big signal working conditions of the circuit system. The SABER-MATLAB models and fuzzy algorithm were used in developing the fuzzy PID controller. The co-simulation and experimental results displayed that the unit introduced herein has the characteristics of high control precision and antinterference capability.A novel electron beam welder （ EBW） power supply was developed. Compared with the traditional 3-phase contrail 12-pulse rectifying supplies, it requires a much lower step-up ratio transformer, but a much less output ripple voltage can be obtained. The design of the main circuit of this new power supply is based on PWM buck-boost converter topology. In developing the system a fuzzy PID control method is adopted because of the strong non-linearity and big signal working conditions of the circuit system. The SABER-MATLAB models and fuzzy algorithm were used in developing the fuzzy PID controller. The co-simulation and experimental results displayed that the unit introduced herein has the characteristics of high control precision and antinterference capability.

关 键 词：electron beam welder buck-boost converter fuzzy control 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置] TM42[自动化与计算机技术—控制科学与工程]