Development of 100 kV/25 mA high voltage DC power supply with lower ripple
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摘要: 百千伏高压直流电源广泛应用于电子束产生与应用领域。高压直流电源电压纹波是影响束流品质的重要因素之一。某型等效阻抗为4 MΩ的电子枪对加载电压提出峰峰值高压纹波不超过0.06%，同时实现较小高压储能以减小打火时电子枪损伤风险，基于全桥逆变和双极性Cockcroft-Walton倍压电路设计了一种不对称电容布局的高压直流电源，在分析储能与纹波、倍压效率关系基础上给出了倍压电路参数简化设计方法，实验结果表明，不额外采用滤波网络，在25 kHz逆变频率、100 kV/25 mA输出条件下纹波系数优于0.06%，相比于传统设计方法，所需高压储能可降低12%以上。Abstract: High voltage DC power supply is widely used in research and application areas of electron beam. Recently the method of decreasing ripple is a research hotspot due to the ripple of high voltage is the very key factor to quality of beams. This paper studies a novel circuit topology, which is comprised of a high bridge converter and a double polarity Cockcroft-Walton circuit with unsymmetrical capacitors. The experimental results show that the ripple is lower than 0.06% when the output voltage and current are 100 kV and 25 mA, respectively. Meanwhile the storage energy of high voltage units is only 0.85 of traditional circuit.
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图 4 倍压整流电路侧柱电容与倍压效率的关系
Figure 4. Relation of flank capacitor and voltage transfer efficiency
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[1] Shen Chao, Wan Lei. The performance optimization design of high frequency and high voltage transformer of electronic beam welder[J]. Advanced Materials Research, 2011, 383-390: 7175-7182. doi: 10.4028/www.scientific.net/AMR.383-390.7175 [2] Schilling F, Passon S, Meisner J, et al. High frequency high voltage power supplies[M]//Németh B. Proceedings of the 21st International Symposium on High Voltage Engineering. Cham: Springer, 2020: 1467-1476. [3] 李亚维, 谢敏, 蓝欣, 等. 200 kV低纹波高稳定度直流高压电源[J]. 强激光与粒子束, 2016, 28:015016 doi: 10.11884/HPLPB201628.015016Li Yawei, Xie Min, Lan Xin, et al. A 200 kV high voltage DC power supply with high stability and low ripple[J]. High Power Laser and Particle Beams, 2016, 28: 015016 doi: 10.11884/HPLPB201628.015016 [4] 刘玺尧, 曾国强, 谭承君, 等. 基于罗耶谐振的微型X射线管高压电源的设计[J]. 核技术, 2013, 36:080403Liu Xiyao, Zeng Guoqiang, Tan Chengjun, et al. Design of high voltage power supply of miniature X-ray tube based on resonant Royer[J]. Nuclear Techniques, 2013, 36: 080403 [5] 陈尚文, 苏桐龄. 600kV、15mA直流高压稳压电源稳压系统[J]. 甘肃科学学报, 1996, 8(3):81-84Chen Shangwen, Su Tongling. The stabilized system of 600kV, 15mA DC high voltage stabilized power supply[J]. Journal of Gansu Sciences, 1996, 8(3): 81-84 [6] 邹亚明. 电子束离子阱及高电荷态离子相关物理[J]. 物理, 2003, 32(2):98-104Zou Yaming. Electron beam ion traps and highly charged ion relevant physics[J]. Physics, 2003, 32(2): 98-104 [7] 周长庚, 李彦, 娄本超, 等. 200 kV高压开关电源研制[J]. 强激光与粒子束, 2011, 23(3):761-764 doi: 10.3788/HPLPB20112303.0761Zhou Changgeng, Li Yan, Lou Benchao, et al. Development of 200 kV high voltage switch power supply[J]. High Power Laser and Particle Beams, 2011, 23(3): 761-764 doi: 10.3788/HPLPB20112303.0761 [8] 王亚君, 周岐. PWM型倍压电路压降的计算[J]. 辽宁工业大学学报(自然科学版), 2008, 28(5):299-301Wang Yajun, Zhou Qi. Calculation of output voltage from voltage multiplying circuit of PWM[J]. Journal of Liaoning University of Technology (Natural Science Edition), 2008, 28(5): 299-301 -
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