Optimization of high temperature superconducting motor magnets with strong airgap flux density

IF 1.3 3区物理与天体物理 Q4 PHYSICS, APPLIED Physica C-superconductivity and Its Applications Pub Date : 2024-07-23 DOI:10.1016/j.physc.2024.1354574

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Abstract

This paper presents a design for five conventional superconducting magnet structures to meet the high magnetic load demand of superconducting motors while reducing the superconducting tapes consumption. A 45° highest efficiency line is proposed based on the graphical method, and the magnet structure is optimized by combining finite element and PSO algorithms. Additionally, a correlation function is established using the vertical magnetic field to estimate the critical current, describing the nonlinear relationship between the two. The optimization method can maintain the airgap flux density waveform before and after optimization, reduce tapes consumption and perpendicular field on the tapes, refine the field distribution, and improve the safety margin of superconducting coils. The magnet design scheme can be selected with low tape consumption or high safety margin according to actual demand. This research can be used to optimize the electromagnetic design of superconducting electric motors, as well as other superconducting magnet applications, such as superconducting magnetic bearings, nuclear magnetic resonance, and large-scale scientific installations for high-energy physics. The aim is to achieve the exhaustive use of superconducting tapes.

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优化具有强气隙磁通密度的高温超导电机磁体

本文介绍了五种常规超导磁体结构的设计，以满足超导电机的高磁负荷需求，同时降低超导磁带的消耗。基于图解法提出了 45° 最高效率线，并结合有限元和 PSO 算法对磁体结构进行了优化。此外，还利用垂直磁场建立了一个相关函数来估算临界电流，描述了两者之间的非线性关系。该优化方法可以保持优化前后的气隙磁通密度波形，减少磁带消耗和磁带上的垂直磁场，细化磁场分布，提高超导线圈的安全系数。磁体设计方案可根据实际需求选择低磁带消耗或高安全裕度。这项研究可用于优化超导电机的电磁设计，以及其他超导磁体应用，如超导磁轴承、核磁共振、高能物理大型科学装置等。我们的目标是实现超导磁带的全面应用。

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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.