The Development of Power Supply for Negative Ion Source Extraction Grid

被引：4

作者：

Hu, Chun-Dong ^{[1
,2
]}

Huang, Mei-Chu ^{[1
,2
]}

Jiang, Cai-Chao ^{[1
,2
]}

Xie, Ya-Hong ^{[3
]}

Wei, Jiang-Long ^{[3
]}

Liang, Li-Zhen ^{[3
]}

Zhao, Yuan-Zhe ^{[3
]}

Chen, Shi-Yong ^{[3
]}

Xie, Yuan-Lai ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Neutral Beam Inject Div, Hefei 230031, Anhui, Peoples R China

[2] Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China

[3] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2018年 / 46卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Extraction grid power supply (EGPS); negative ion source; pulse step modulation (PSM); switch power supply (SPS) module; SYSTEM; DESIGN; NBI;

D O I：

10.1109/TPS.2018.2797891

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The extraction grid power supply (EGPS) is important for neutral beam injection of tokamak, which is used to extract the negative ions from the plasma source. A set of power supply with pulse step modulation topology at 16 kV/20 A has been designed for the negative ions extraction at the Institute of Plasma Physics, Chinese Academy of Sciences, which meets the requirements of fast dynamics, low ripple, and good output operation. The development of EGPS is presented in this paper. Two different voltage ratings and series-connected switched power supply (SPS) modules are fed from multisecondary transformer. Insulated-gate bipolar transistors are applied to the switch of SPS module. Rise time and fall time of EGPS out voltage can be set from few microseconds to milliseconds. When the overcurrent occur, the output voltage falls to zero less than 5 mu s. The dynamic performance tests with dummy load of EGPS are presented. The testing results indicate that the power supply meets the demands of negative ions extraction. The design provides a foundation for the next phase of extraction experimental operation for radio frequency ion source.

引用

页码：1699 / 1703

页数：5

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