大功率变流器脉冲电流的计算

王重马; 黄连生; 傅鹏; 黄荣林; 陈晓娇; 王振尚; 曾思哲

doi:10.11884/HPLPB201931.180283

大功率变流器脉冲电流的计算

doi: 10.11884/HPLPB201931.180283

王重马^{1, 2,},
黄连生^1, ,,
傅鹏¹,
黄荣林¹,
陈晓娇¹,
王振尚^{1, 2},
曾思哲^{1, 2}

1.
中国科学院等离子体物理研究所, 电源及控制工程研究室, 合肥 230031
2.
中国科学技术大学科学岛分院，合肥 230026

基金项目:

国家磁约束核聚变能发展专项 2014GB105000

详细信息

作者简介:
王重马(1990—), 男，博士研究生，从事大功率变流器设计及电力电子器件分析；chmwang@ipp.ac.cn

通讯作者:
黄连生(1983—)，男，博士，副研究员，从事大功率聚变变流器系统设计、大功率电源控制及控制系统设计；huangls@ipp.ac.cn

中图分类号: TL6
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出版历程
- 收稿日期: 2018-10-23
- 修回日期: 2019-01-21
- 刊出日期: 2019-03-15

Calculation of pulse current of high power converter

1.
Power Supply and Control Engineering Laboratory, Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
2.
Science Island Branch, University of Science and Technology of China, Hefei 230026, China

摘要

摘要: 为了适应核聚变实验的要求，在下一代托卡马克的设计中需要变流器输出瞬时高强度脉冲电流为大型电气设备提供动热稳定等型式试验。提出一种将电源系统阻抗等效到整流变压器二次侧并结合变流器两端电压变化关系的方法，建立了大功率变流器的等效电路模型。在不同电气参数下计算得出了相应的多台变流器并联的总输出电流。以1000 kA为目标，给出了符合条件的电气参数计算过程和结果。该结果作为给定参数下的极限条件，使得在大功率变流器脉冲电流设计时有了最低设计阈值，为后续的变流器器件选型和结构设计奠定了基础。
- 核聚变 /
- 变流器 /
- 脉冲电流 /
- 阻抗 /
- 托卡马克
Abstract: In order to meet the requirements of nuclear fusion experiments, the converter is required in the design of the next generation tokamak to output instantaneous high-intensity pulsed current for providing type test dynamic and thermal stability in large electrical equipment. In this paper, a method of equating the impedance of the power supply system to the secondary side of the transformer and combining the voltage change relationship at both ends of the converter is presented. The total output current of several converters is obtained by calculation in different electrical parameters. The calculating process and results of electrical parameters meeting the requirements are given when the output current is 1 MA. The results are the limit condition under the given parameter, which makes the minimum design threshold in the high-power converter impulse current design, and lays the foundation for the following converter device selection and structure design.
- nuclear fusion /
- converter /
- pulsed current /
- impedance /
- tokamak

HTML全文

图 1 大功率变流器系统结构图

Figure 1. High power converter system structure

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图 2 变流器系统拓扑图

Figure 2. High power converter system topology

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图 3 变流器整流等效电路

Figure 3. Equivalent circuit of a high power converter

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图 4 变流器系统阻抗和电流分布图

Figure 4. Impedance and current distribution of the converter system

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图 5 变流器系统仿真电流波形

Figure 5. Simulated current waveform of converter system

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表 1 输出电流与降压变压器容量和整流变压器短路阻抗匹配结果

Table 1. Matching results of output current and step-down transformer capacity rectifier transformer short circuit impedance(per unit value)

S_Nj capacity/(MV·A)	output current/kA
S_Nj capacity/(MV·A)	10%	11%	12%	13%	14%	15%	16%	17%	18%	19%	20%
50	804	802	801	800	799	797	796	795	794	792	791
60	937	935	933	932	930	928	927	925	923	922	920
70	1062	1060	1058	1056	1054	1051	1049	1047	1045	1043	1041
80	1181	1179	1176	1173	1170	1168	1165	1162	1160	1157	1155
90	1294	1291	1287	1284	1281	1278	1274	1271	1268	1265	1262
100	1401	1397	1393	1389	1385	1382	1378	1374	1371	1367	1363
150	1861	1855	1848	1841	1835	1828	1822	1815	1809	1802	1796
200	2228	2218	2209	2199	2190	2180	2171	2162	2153	2144	2135
240	2471	2459	2447	2436	2424	2413	2402	2390	2379	2368	2357

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表 2 待测电阻与降压变压器容量和整流变压器短路阻抗匹配值

Table 2. Matching results of resistance to be measured, step-down transformer capacity and rectifier transformer short circuit impedance(per unit value)

S_Nj /(MV·A)	resistance to be measured/mΩ
S_Nj /(MV·A)	10%	11%	12%	13%	14%	15%	16%	17%	18%	19%	20%
50	-0.356	-0.359	-0.362	-0.365	-0.368	-0.371	-0.373	-0.376	-0.379	-0.382	-0.385
60	-0.099	-0.101	-0.104	-0.107	-0.110	-0.113	-0.116	-0.118	-0.121	-0.124	-0.127
70	0.086	0.083	0.080	0.077	0.074	0.071	0.069	0.066	0.063	0.060	0.057
80	0.224	0.221	0.218	0.215	0.212	0.210	0.207	0.204	0.201	0.198	0.195
90	0.331	0.328	0.326	0.323	0.320	0.317	0.314	0.311	0.308	0.306	0.303
100	0.417	0.414	0.412	0.409	0.406	0.403	0.400	0.397	0.394	0.392	0.389
150	0.675	0.672	0.669	0.667	0.664	0.661	0.658	0.655	0.652	0.649	0.647
200	0.804	0.801	0.798	0.795	0.793	0.790	0.787	0.784	0.781	0.778	0.776
240	0.868	0.866	0.863	0.860	0.857	0.854	0.851	0.849	0.846	0.843	0.840

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