Design and analysis of high voltage DC power supply system for the nuclear fusion application

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Fundamental Plasma Physics Pub Date : 2026-03-01 Epub Date: 2026-01-15 DOI:10.1016/j.fpp.2026.100108

Ashok D. Mankani , Priyesh Chauhan , Suryakant Gupta , Saurabh Kumar , Amal S , Aritra Chakraborty , Aditya Naugraiya , Meddi Tharun , Abhishek Singh , Paul Christian , Ujjwal Kumar Baruah

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Abstract

Institute for Plasma Research (IPR), a premier national institute working in the field of plasma physics and nuclear fusion has designed a 500 kV/2 A DC High Voltage Power Supply (HVPS) System. This power supply is best suited for High Power (≥ 1 MW) and High Energy (≥100 keV) Neutral Beam Injector (NBI), an important Heating & Current Drive System used in magnetic confinement reactor TOKAMAK. The HVPS design emphasizes on its tight performance requirements viz. wider output voltage control range (20 % - 100 %), stability (≤ 1 %), ripple (≤ 5 %), fast turn ON & OFF time (few tens of µsec), repeated breakdown withstand capability together with lower input harmonics and near unity power factor. The design also takes into account the modularity, scalability, reliability, availability and maintainability aspects. The power supply comprises of a thyristor controlled rectifier forming common DC-Link powering the five stages of Inverter coupled High Voltage Transformer Rectifiers Units (HV-TRU). The output of each HV-TRUs are connected in series to produce 500 kV DC output. This paper elaborates the design of HVPS for NBI system including component sizing, selection, and topology of all the key elements of the power supply system supported by the simulation analysis carried out in ®MATLAB/Simulink/SimPowerSys validating the functional and performance requirements mentioned above.

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核聚变用高压直流电源系统的设计与分析

等离子体研究所（IPR）是在等离子体物理和核聚变领域工作的主要国家机构，设计了500 kV/ 2a直流高压电源（HVPS）系统。该电源最适合于大功率（≥1 MW）和高能（≥100 keV）中性束注入器（NBI），这是磁约束反应堆托卡马克中重要的加热和电流驱动系统。HVPS设计强调其严格的性能要求，即更宽的输出电压控制范围（20% - 100%），稳定性（≤1%），纹波（≤5%），快速接通和关闭时间（几十µsec），耐重复击穿能力以及更低的输入谐波和接近统一的功率因数。设计还考虑了模块化、可扩展性、可靠性、可用性和可维护性等方面。电源由晶闸管控制的整流器组成，形成共同的DC-Link，为逆变器耦合高压互感器整流器单元（HV-TRU）的五级供电。每台高压- truu的输出串联起来，产生500kv直流输出。本文详细阐述了NBI系统HVPS的设计，包括电源系统各关键元件的尺寸、选型和拓扑结构，并在MATLAB/Simulink/SimPowerSys中进行了仿真分析，验证了上述功能和性能要求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Fundamental Plasma Physics

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