Design and implementation of a novel high-voltage power supply in electron beam welding machine
-
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。
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.
-
表 1 高压电源负载测试数据
Table 1. Testing data of high-voltage power supply with load
电压设置/kV 电压反馈/V 电压测量/kV 电流测量/mA 0 0 0 0 5 -0.51 -5.02 12.61 10 -1.01 -10.21 25.42 15 -1.50 -15.12 37.74 20 -1.99 -19.89 49.60 25 -2.51 -25.13 62.49 30 -3.00 -30.02 75.01 35 -3.47 -34.59 86.52 40 -4.01 -40.15 100.39 45 -4.55 -45.22 113.20 50 -5.02 -50.35 126.01 55 -5.53 -55.31 138.32 60 -6.01 -60.31 150.68 -
[1] 叶汉民.电子束焊机中的高电压技术问题[J].高电压技术,1999,25(2):50-52. http://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ199902023.htmYE H M.Problems of application of high voltage engineering for electron beam welder[J].High Voltage Engineering,1999,25(2):50-52(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ199902023.htm [2] 齐铂金,范霁康,刘方军.脉冲束流电子束焊接技术综述[J].航空制造技术,2015(11):26-30. http://www.cnki.com.cn/Article/CJFDTOTAL-HKGJ201511004.htmQI B J,FAN J K,LIU F J.An overview of pulsed electron beam welding technology[J].Aeronautical Manufacturing Technology,2015(11):26-30(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-HKGJ201511004.htm [3] 韦寿祺,宗敖星.中压型大功率电子束焊机电控系统的研制[J].电焊机,1996,26(5):38-40. http://www.cnki.com.cn/Article/CJFDTOTAL-DHJI605.012.htmWEI S Q,ZONG A X.Study on control system of medium voltage high power electron beam welder[J].Electric Welding Machine,1996,26(5):38-40(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-DHJI605.012.htm [4] 戴培善.电子束焊机60 kV直流电源电子管调压方法[J].电焊机,1998,28(2):36-38. http://www.cnki.com.cn/Article/CJFDTOTAL-DHJI802.013.htmDAI P S.Voltage regulating method of 60 kV DC power source electronic tube in electron beam welder[J].Electric Welding Machine,1998,28(2):36-38(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-DHJI802.013.htm [5] 莫金海,韦寿祺,何少佳,等.新型PWM-BUCK电子束焊机稳定高压电源的设计[J].焊接学报,2009,30(6):34-38. http://www.cnki.com.cn/Article/CJFDTOTAL-HJXB200906010.htmMO J H,WEI S Q,HE S J,et al.Design of stabilized high-voltage source with PWM-BUCK for electron beam welder[J].Transactions of the China Welding Institution,2009,30(6):34-38(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-HJXB200906010.htm [6] 李正熙,王磊,赵仁涛.一种全桥逆变式电子束焊机高压电源[J].自动化与仪器仪表,2008(3):15-17. http://www.cnki.com.cn/Article/CJFDTOTAL-ZDYY200803008.htmLI Z X,WANG L,ZHAO R T.A new H-bridge inverter of HV power source for electron beam welder[J].Automation & Instrumentation,2008(3):15-17(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-ZDYY200803008.htm [7] 李正熙,王泽庭,樊生文.高频高压电子束焊机电源的研制[J].北方工业大学学报,2010,22(3):16-18. http://www.cnki.com.cn/Article/CJFDTOTAL-BFGY201003005.htmLI Z X,WANG Z T,FAN S W.Development of high frequency and high voltage source for electronic beam welder[J].Journal North China University of Technology,2010,22(3):16-18(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-BFGY201003005.htm [8] 赵卫东,王俊峰,孙建坤.电子束焊接用高压直流电源设计[J].安徽工业大学学报,2010,27(3):295-298. http://www.cnki.com.cn/Article/CJFDTOTAL-HDYX201003021.htmZHAO W D,WANG J F,SUN J K.Design of high-voltage power supply for electron beam welding[J].Journal of Anhui University of Technology,2010,27(3):295-298(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-HDYX201003021.htm [9] PRESSMAN A I,BILLINGS K,MOREY T.开关电源设计[M].3版.王志强,肖文勋,虞龙,译.北京:电子工业出版社,2014:63.PRESSMAN A I,BILLINGS K,MOREY T.Switching power supply design[M].3rd ed.WANG Z Q,XIAO W X,YU L,translated.Beijing:Publishing House of Electronics Industry,2014:63(in Chinese). [10] ORTIZ G,LUKAS F,KOLAR J W,et al.Flux balancing of isolation transformers and application of "the magnetic ear" for closed-loop volt-second compensation[J].IEEE Transactions on Power Electronics,2014,29(8):4078-4090. doi: 10.1109/TPEL.2013.2294551 [11] 宋志勇.移相全桥大功率高频开关电源的研究与设计[D].武汉:湖北工业大学,2014:34-37.SONG Z Y.The study and design of phase-shift full-bridge high-power high-frequency switching power supply[D].Wuhan:Hubei University of Technology,2014:34-37(in Chinese). [12] 张伟,杜慧聪,齐铂金,等.150 kV/50 kW逆变式电子束焊机高压电源设计[J].北京航空航天大学学报,2014,40(11):1531-1536. http://bhxb.buaa.edu.cn/CN/abstract/abstract13072.shtmlZHANG W,DU H C,QI B J,et al.150 kV/30 kW inverter for electron beam welding power supply design[J].Journal of Beijing University of Aeronautics and Astronautics,2014,40(11):1531-1536(in Chinese). http://bhxb.buaa.edu.cn/CN/abstract/abstract13072.shtml [13] LEARY A M,OHODNICKI P R,MCHENRY M E.Soft magnetic materials in high-frequency high-power conversion applications[J].JOM the Journal of the Minerals Metals & Materials Society,2012,64(7):772-781. http://cn.bing.com/academic/profile?id=6bd73488b4a12d643774b1f7290cdfe5&encoded=0&v=paper_preview&mkt=zh-cn [14] 曲振江.静电电源设备中倍压整流电路的特性分析[J].电力电子技术,1994(3):33-35. http://www.cnki.com.cn/Article/CJFDTOTAL-DLDZ403.010.htmQU Z J.The analysis of the characteristics of voltage doubling rectifier circuit in static precipitator power supply[J].Power Electronics,1994(3):33-35(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-DLDZ403.010.htm [15] 曲振江,马文娟.高压静电设备中倍压整流电路的工作状态分析[J].高电压技术,2005,31(10):64-66. http://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ200510023.htmQU Z J,MA W J.Working state analysis of the multiple-voltage rectifying circuit in high voltage electrostatic equipment[J].High Voltage Engineering,2005,31(10):64-66(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ200510023.htm [16] 杜慧聪,刘方军,张伟,等.150kV高压逆变电源倍压整流电路仿真[J].北京航空航天大学学报,2014,40(7):1001-1005. http://bhxb.buaa.edu.cn/CN/abstract/abstract12986.shtmlDU H C,LIU F J,ZHANG W,et al.Simulation of voltage doubling rectifying circuit in 150 kV high-voltage inverter power supply[J].Journal of Beijing University of Aeronautics and Astronautics,2014,40(7):1001-1005(in Chinese). http://bhxb.buaa.edu.cn/CN/abstract/abstract12986.shtml [17] FAN S,WANG Z.Development of high voltage source for electronic beam welder based on phase shift control[C]//Electric Information and Control Engineering(ICEICE).Piscataway,NJ:IEEE Press,2011:5843-5846.