50kW级高性能等离子体逆变器设计及其实验研究  

Design and experimental study of 50 kW high performance plasma inverter

作　　者：方小鑫[1] 王振民[1] 佘欣仁[1] 潘成熔[1] 张新[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《电焊机》2013年第5期119-124,共6页Electric Welding Machine

基　　金：国家自然科学基金资助项目(50805051);广东省科技计划资助项目(2011B090400081);中央高校基本科研业务费资助项目(2012ZZ0059);材料成形与模具技术国家重点实验室开放基金(2011-P02)

摘　　要：高可靠高性能的大功率等离子体电源对大功率等离子体系统全面发展和推广应用起着至关重要的作用。研制了一种高效节能、稳定可靠的50 kW级高性能等离子体逆变器,利用高频全桥逆变技术实现强等离子体能量的高效传递和变换;设计了以UC3846为核心的控制电路和高频脉冲变压器为核心的驱动电路,采用双闭环控制模式进一步提高电源系统的响应性能和可靠性;最后对研制的50 kW样机进行性能测试和燃弧实验研究。结果表明,设计合理可行,研制的大功率等离子体逆变器工作稳定可靠,性能优良。A high power plasma supply with high reliability and high performance plays an important rnle in the development and application of high power plasma system.This paper designs a kind of high energy efficient, stable and reliable 50 kW plasma inverter,which uses full-bridge inverter technology with high frequency to realize the efficient energy transfer and transformation for strong plasma.This design respectively takes UC3846 and high frequency pulse transformer as the cores of the c,mtrol circuit and driver circuit,and adopts dnuble-loop control mode to further improve the response performance and reliability of tile power system. Finally,the experimental stt,dy of the performance testing and arcing has been clone in the developed prototype.The results show that this design is rational and feasit,le,and the developed high power plasma inverter works reliably with excellent performance.

关 键 词：等离子体 逆变器 双闭环控制 

分 类 号：TG439.5[金属学及工艺—焊接]