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Measurement and Numerical Calculation of AC Losses in Second-Generation High Temperature Superconductor Current Leads
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Measurement and Numerical Calculation of AC Losses in Second-Generation High Temperature Superconductor Current Leads
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National High Technology Research and Development of China (“863” Program) (2009AA03Z209); National Natural Science Foundation of China (51077003)

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    摘要:

    為了研究高溫超導(dǎo)電流引線結(jié)構(gòu)對交流損耗的影響，制作了2種不同結(jié)構(gòu)的高溫超導(dǎo)電流引線?；贑lem模型，把外部磁場對交流損耗的影響加以考慮。在電流引線截面上建立了坐標(biāo)系統(tǒng)，通過采取坐標(biāo)平移和坐標(biāo)旋轉(zhuǎn)，可以得到高溫超導(dǎo)電流引線內(nèi)部磁場分布。 在以上基礎(chǔ)上，建立矩形骨架 (RSCL) 和十二邊形骨架 (DSCL) 兩種不同結(jié)構(gòu)的高溫超導(dǎo)電流引線的交流損耗計(jì)算模型。運(yùn)用MATLAB編寫計(jì)算模型，計(jì)算兩種不同結(jié)構(gòu)的高溫超導(dǎo)電流引線的交流損耗。最后，在液氮環(huán)境中采用電氣方法進(jìn)行兩種不同結(jié)構(gòu)電流引線交流損耗的實(shí)驗(yàn)測量。在不同的電流和不同頻率下測量兩種不同結(jié)構(gòu)的電流引線的交流損耗，將理論結(jié)果和測量數(shù)據(jù)進(jìn)行比較，并就結(jié)構(gòu)對交流損耗的影響進(jìn)行了分析。交流損耗計(jì)算結(jié)果表明，坐標(biāo)轉(zhuǎn)換模型比Norris模型更準(zhǔn)確，十二邊形骨架（DSCL）的交流損耗比矩形骨架（RSCL）小。

    Abstract:

    In order to study the effects of the structures of HTS current leads on AC losses, two different structure HTS current leads were fabricated. Based on the Clem model, the effects of external magnetic field on AC losses were taken into account. The coordinate system on the cross section of the current leads was established. By taking the advantage of coordinate translation and coordinate rotation, the distributions of the magnetic field in HTS current leads were obtained. On the basis, AC loss calculation models for the two different structure HTS current leads, rectangular skeleton current lead (RSCL) and dodecagon skeleton current lead (DSCL) were built. Then, calculation programs were compiled using MATLAB and AC losses of the two different structure HTS current leads were calculated. Finally, the experiments of AC losses of HTS current leads were carried out by an electrical method in liquid nitrogen environment. AC losses of the two different structure current leads were measured at different currents and different frequencies. The theoretical results and measured data were compared and the effects of the structures of HTS current leads on AC losses were analyzed. The calculation results of AC losses show the coordinate transformation model is more accurate than the Norris model. The results also show AC loss of DSCL is smaller than that of RSCL.

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引用本文

方 進(jìn),申 政,張宏杰,諸嘉慧,丘 明. Measurement and Numerical Calculation of AC Losses in Second-Generation High Temperature Superconductor Current Leads[J].稀有金屬材料與工程,2015,44(1):48~53.[Fang Jin, Shen Zheng, Zhang Hongjie, Zhu Jiahui, Qiu Ming. Measurement and Numerical Calculation of AC Losses in Second-Generation High Temperature Superconductor Current Leads[J]. Rare Metal Materials and Engineering,2015,44(1):48~53.]
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  • 收稿日期:2014-01-25
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  • 在線發(fā)布日期: 2015-05-22
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