北京航空航天大学学报 ›› 2017, Vol. 43 ›› Issue (2): 293-300.doi: 10.13700/j.bh.1001-5965.2016.0072

• 论文 • 上一篇    下一篇

新型电子束焊机高压电源的设计与实现

范霁康, 齐铂金, 刘方军, 张伟, 齐秦, 王海涛   

  1. 北京航空航天大学 机械工程及自动化学院, 北京 100083
  • 收稿日期:2016-01-20 出版日期:2017-02-20 发布日期:2016-04-18
  • 通讯作者: 齐铂金,E-mail:qbj@buaa.edu.cn E-mail:qbj@buaa.edu.cn
  • 作者简介:范霁康,男,博士研究生。主要研究方向:电子束焊接工艺与设备;齐铂金,男,博士,教授。主要研究方向:焊接工艺与设备,先进电源技术及应用。
  • 基金资助:
    工业与信息化部科技重大专项(2010ZX04007-041)

Design and implementation of a novel high-voltage power supply in electron beam welding machine

FAN Jikang, QI Bojin, LIU Fangjun, ZHANG Wei, QI Qin, WANG Haitao   

  1. School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2016-01-20 Online:2017-02-20 Published:2016-04-18
  • Supported by:
    Special Major Science and Technology of Ministry of Industry and Information Technology (2010ZX04007-041)

摘要: 传统的电子束焊机高压电源电路结构复杂、体积庞大,为此研发了一种新型60 kV/100 mA逆变式电子束焊机高压电源,电路结构简单、电压输出稳定。电源调压电路采用脉宽调制(PWM)技术控制的全桥变换器,使三相整流后的约540 V电压转化为0~500 V幅值可调的稳压直流电,然后经全桥逆变电路逆变为频率为20 kHz方波交流电;升压电路采用变压器串联与倍压整流的方式,将前级20 kHz方波交流电转变为60 kV的直流高压;控制电路采用基于比例积分微分(PID)调节的电压双闭环控制策略,能够使电源实现稳定的高压输出。搭建了高压测试平台对所研制的高压电源进行了测试,结果表明电源高压输出稳定、控制精度高,高压输出纹波与稳定度均能稳定在1%范围内,能够满足电子束焊机的要求。

关键词: 电子束焊接, 高压电源, 全桥逆变, 倍压整流, 双闭环控制

Abstract: Traditional high-voltage power supply of electron beam welding machine has complicated circuit and huge volume. For improving the property of electron beam welding machine, a novel 60 kV/100 mA high-voltage power supply is developed in this paper. First, the three-phase electric is rectified to 540 V DC voltage. Then The voltage regulator circuit part adopts a full-bridge direct current converter controlled by pulse width modulation (PWM) method to regulate the 540 V DC voltage to adjustable 0-500 V DC voltage. A full-bridge inverter is used to change the DC voltage to 20 kHz AC voltage. Cascade-connected transformers and voltage doubling rectifiers are employed in the high voltage circuit part to achieve the 60 kV high-voltage output. In order to make the high-voltage output more stable, the double closed-loop control system based on proportion integration differentiation (PID) is adopted in the control circuit part. A high-voltage testing platform is established to measure the assembled high-voltage power supply and the test results show that the power supply has stable output voltage and high control accuracy. The ripple factor and stability are all in the 1% range, which can meet the requirement of electron beam welding machine.

Key words: electron beam welding, high-voltage power supply, full-bridge inverter, double voltage rectification, double closed-loop control

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