Temperature equalization control method for rotor magnet of HTS synchronous condenser with circulating cold helium gas

IF 1.5 3区物理与天体物理 Q4 PHYSICS, APPLIED

Physica C-superconductivity and Its Applications Pub Date : 2026-02-01 Epub Date: 2025-12-26 DOI:10.1016/j.physc.2025.1354825

Xin Chen , Lei Wang , Cong Wang , Shixian Liu , Jianhua Liu , Gongxuan Chen , Hui Wang , Huangfang Wu , Jiancheng Zhang , Qiuliang Wang

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引用次数: 0

Abstract

In the cooling system of high-temperature superconducting (HTS) synchronous condenser rotor magnets, cold helium gas serves as the primary cooling medium. The complex coupling relationships among its flow rate, temperature, and pressure require precise control to address the instability caused by localized hotspots in the superconducting magnets.This paper integrates the singular perturbation control theory of variable-domain Smith to construct a mathematical model of the cold helium gas circulating cooling system.The cold helium gas circulation cooling system is decomposed into fast and slow subsystems. By precisely controlling the flow rate and velocity of the cold helium gas, the goal of eliminating local hotspots and achieving uniform temperature distribution in the superconducting magnet is realized.Simultaneously, the system performance is optimized using fuzzy adaptive PID control.In addition, a simulation experiment was conducted on the cold helium gas circulation cooling system of the superconducting magnet using this method, which verified the effectiveness of the aforementioned approach in eliminating local hotspots and improving temperature uniformity.This study provides an engineering-feasible optimization scheme for the cryogenic thermal management of the rotor magnet in HTS synchronous condensers.

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冷氦循环高温超导同步冷凝器转子磁体的温度均衡控制方法

在高温超导（HTS）同步冷凝器转子磁体冷却系统中，冷氦气是主要冷却介质。其流量、温度和压力之间复杂的耦合关系需要精确控制，以解决超导磁体局部热点引起的不稳定性。结合变域Smith的奇异摄动控制理论，建立了冷氦气循环冷却系统的数学模型。冷氦气循环冷却系统分为快、慢两个子系统。通过精确控制冷氦气的流量和速度，实现了消除超导磁体局部热点，实现超导磁体温度分布均匀的目标。同时，采用模糊自适应PID控制对系统性能进行优化。并利用该方法对超导磁体冷氦气循环冷却系统进行了仿真实验，验证了该方法在消除局部热点、提高温度均匀性方面的有效性。本研究为高温超导同步冷凝器转子磁体的低温热管理提供了一种工程可行的优化方案。

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来源期刊

Physica C-superconductivity and Its Applications 物理-物理：应用

CiteScore

2.70

自引率

11.80%

发文量

102

审稿时长

66 days

期刊介绍： Physica C (Superconductivity and its Applications) publishes peer-reviewed papers on novel developments in the field of superconductivity. Topics include discovery of new superconducting materials and elucidation of their mechanisms, physics of vortex matter, enhancement of critical properties of superconductors, identification of novel properties and processing methods that improve their performance and promote new routes to applications of superconductivity. The main goal of the journal is to publish: 1. Papers that substantially increase the understanding of the fundamental aspects and mechanisms of superconductivity and vortex matter through theoretical and experimental methods. 2. Papers that report on novel physical properties and processing of materials that substantially enhance their critical performance. 3. Papers that promote new or improved routes to applications of superconductivity and/or superconducting materials, and proof-of-concept novel proto-type superconducting devices. The editors of the journal will select papers that are well written and based on thorough research that provide truly novel insights.