A Fast Double Null Control Concept Enabling Compact Fusion Reactors

Mark Lafferty

doi:10.1109/TPS.2026.3662750

2026-01-01

PRE

DOI：10.1109/TPS.2026.3662750

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摘要

En 中文

STEP原型发电厂（SPP）将采用双虚点偏置（DND）等离子体拓扑结构，以在紧凑设计中管理非常高的偏置器热通量。DND构型在连接状态下（即ΔR-sep较小）有利于偏置器功率平衡和H模访问。由于垂直不稳定性以及主动垂直控制的局限性，等离子体可能偏离连接的DND状态，导致偏置器热负载不平衡，并可能丧失H模，两者都会危及等离子体场景的可行性。为缓解此问题，我们提出了一种新颖的双虚点平衡（DNB）控制方案，用于结合等离子体垂直位置控制来控制ΔR-sep，防止断开连接。在本研究中，我们在TCV（可变构型托卡马克）上测试了DNB控制的实现。该控制器显示出对ΔR-sep的显著改善控制，在垂直步进高达±3 cm时保持连接。该控制器还证明在这些扰动期间能有效平衡辐射功率，防止向内部偏置器区域产生辐射功率尖峰。这些积极结果为DNB控制提供了非常鼓舞人心的概念验证，值得进一步研究和考虑将其集成到SPP及其他未来的双虚点发电厂设计中。

Keyword:

Plasmas

Coils

Observers

Legged locomotion

Fluctuations

Toroidal magnetic fields

Tokamak devices

Space heating

Prototypes

Position control

delta R-sep

double null diverted (DND)

exhaust

fusion

fusion energy

H-mode

magnetic confinement fusion

magnetic control

power balance

STEP

TCV

Tokamak

vertical stability

期刊

IEEE Transactions on Plasma Science

IF:

1.5

论文数:

551

被引数:

1.3W

机构

swiss federal institutes of technology domain

学者数:

9.0W

论文数: 8.0W

被引数: 163

UK Atomic Energy Authority

学者数:

2.9K

论文数: 1.1K

被引数: 0

引用论文

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