关于电子束焊机高压电源稳定性设计  

Design of Micro-ripple PWM-Cuk EBW High Voltage Stabilized Source

作　　者：莫金海[1] 乔艳平[1] 李威[1] 林明标[1] 

机构地区：[1]桂林电子科技大学机电工程学院,广西桂林541004

出　　处：《计算机仿真》2016年第6期170-175,共6页Computer Simulation

基　　金：广西自然科学基金(2013GXNSFAA019301);桂林电子科技大学研究生教育创新计划资助项目(GDYCSZ 201446);广西制造系统与先进制造技术重点实验室主任课题(桂科能10-046-07-002)

摘　　要：研究电子束焊机高压稳压电源输出电压的稳定性问题,可保证电子束焊接质量。传统的电子束焊机高压电源电路由于存在高纹波输出电压的特性,直接导致了输出稳定性不高。为此设计了一种电子束焊机高压稳压电源控制系统,主要原理是将新型的PWM-Cuk变换器结构与耦合电感技术相结合,合理地分配两个电感的耦合程度,同时还采用了滞后-超前的补偿控制方式,提高系统的稳压精度和控制精度。并且利用SABER和PSIM软件构建系统主电路和控制电路模型并进行仿真。理论分析和仿真结果表明,改进系统具有输出微纹波的特性,还具备整机系统稳压精度高、控制精度和可靠性高、动态特性良好,为电子束焊机优化设计提供了依据。The stability of the output vohage of the EBW＇s high voltage power is a prerequisite to ensure the quali- ty of electron beam welding. An EBW high voltage stable power control system is designed, the main principle is that the new type of PWM - Cuk converter structure is combined with coupled inductor technology to reasonably allocate two inductors＇ coupling degree. At the same time, to develop the system＇s stability and control precision, the lead and lag control mode is utilized. Besides, main circuit and control circuit which are established and simulated by using SABER and PSIM software. Theoretical analysis and simulation results show that the system not only possesses char- acteristic of micro ripple, but also has high control precision, good dynamic behavior, and high energy conversion ef- ficiency.

关 键 词：电子束焊机 微纹波 耦合电感电路 闭环控制 

分 类 号：TM743[电气工程—电力系统及自动化]