Application and analysis of superconducting magnetic eddy current heater used in wind thermal power generation system

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-01-08 DOI:10.1049/elp2.12416

Wenfeng Zhang, Chen Chen, Zeyuan Liu, Youhua Wang, Chengcheng Liu

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Abstract

In order to cope with the grid fluctuation caused by large-scale wind power connected to the grid, the wind thermal power generation system has been proposed and extensively studied. The wind thermal power generation system uses a wind turbine to drive a heat generation device to heat the heat storage medium, which is further exchanged to drive a turbine to generate electricity. A superconducting magnetic eddy current heater (SMH) is proposed for the characteristics of wind thermal power generation system, which uses non-resistive, large current-carrying superconducting coils for excitation, and has high output efficiency and power density. The working principle of magnetic eddy current heating is analysed, and the structure of SMH with no ferromagnetic material and two heating screens inside and outside is proposed according to the characteristics of SMH. An analytical model of the SMH is established, and the influence of the structure and materials of the SMH on the magnetic field distribution is analysed. Based on this, a 22-pole SMH was designed and analysed for output power at 10–20 rpm. A three-dimensional magnetism-stress combined analysis model of SMH is established, and the strain and stress characteristics of SMH are simulated under the condition of maximum output power, which verifies the feasibility of the mechanical properties of existing superconducting materials for application in SMH.

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风力热发电系统中使用的超导磁涡流加热器的应用与分析

为了应对大规模风电并网引起的电网波动，人们提出并广泛研究了风力热发电系统。风力热发电系统利用风力涡轮机驱动发热装置加热蓄热介质，再通过热交换驱动涡轮机发电。针对风力热发电系统的特点，提出了一种超导磁涡流加热器（SMH），它采用无阻抗、大载流量的超导线圈进行励磁，具有较高的输出效率和功率密度。分析了磁涡流加热的工作原理，并根据 SMH 的特点提出了无铁磁材料、内外两层加热屏的 SMH 结构。建立了 SMH 的分析模型，分析了 SMH 的结构和材料对磁场分布的影响。在此基础上，设计了 22 极 SMH，并分析了其在 10-20 rpm 转速下的输出功率。建立了 SMH 的三维磁应力组合分析模型，模拟了 SMH 在最大输出功率条件下的应变和应力特性，验证了现有超导材料的机械性能在 SMH 中应用的可行性。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.