大功率大电流极极磁场变换器模块的研究与开发

Z. Song, P. Fu, J. Li, X. Q. Zhang, Y. Yang
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引用次数: 0

摘要

介绍了用于国际热核实验堆(ITER)超导托卡马克PF线圈供电系统的大功率大电流极流场(PF)变换器模块的分析、设计和测试。由于具有较高的额定电流和特殊的故障抑制能力(FSC)要求,通过对晶闸管和高速熔断器的选型分析,确定了每条臂上并联晶闸管的数量12个。大量的并联晶闸管将会给当前的共享设计带来很大的困难。为此,提出了一种基于电感矩阵的电流共享设计方法。为保证在最坏故障条件下的结构强度,采用了基于框架结构的新型结构设计。进行了相应的测试,测试结果表明,该PF变换器模块具有良好的共流能力和较高的动态特性,完全满足设计要求。该PF变换器模块的设计方法和结构可为大功率大电流晶闸管变换器的研究与开发提供参考。
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Research and development of the high-power high-current polodial field converter module
This paper presents the analysis, design and test of the high-power high-current Poloidal Field (PF) converter module, which will be used in the PF coil power supply system of the International Thermonuclear Experiment Reactor (ITER) superconducting tokamak. Due to the high current rating and special Fault Suppression Capability (FSC) requirement, the number of paralleled thyristors on each arm is determined 12 based on the type selection analysis of thyristor and high-speed fuse. A large amount of parallel thyristors will give rise to significant difficulties in the current sharing design. So a novel method based on inductance matrix is proposed for the current sharing design. To ensure the structural strength under the worst fault condition, a new structure design based on the framework structure is applied in the bridge. Corresponding tests are performed and the test results indicate that the PF converter module is of good current sharing ability and high dynamic characteristic, which can fully satisfy the design requirement. The design method and structure of the PF converter module can provide a reference for the research and development (R&D) of high-power high-current thyristor converters.
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