Experimental studies of diffusion welding of YBCO to copper using solder layers

Xie, Yusheng; Ouyang, Zi Peng; Shi, Lei; Kuang, Zhihao; Meng, Ming

doi:10.1088/1757-899x/171/1/012155

Cited by 2 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The quench voltage of the INS coil used in the experiment is 1.3 mV based on 1 μV/cm because the total length of the superconducting tape wound on the INS coil was 13 m as shown in Table 2 [18][19][20]. In Figure 12a, when the INS coil is in the superconducting state, the standard deviation is 0.8 mV, which is 0.5 mV less than the quench voltage.…”

Section: Discussion and Outlooksmentioning

confidence: 99%

A Novel Fault Diagnosis Method for High-Temperature Superconducting Field Coil of Superconducting Rotating Machine

Song

Choi

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

In this paper, a new method is presented for sensitive quench detection in high-temperature superconductor (HTS) rotating machinery. The normal zone propagation velocity of an HTS is about 1000 times slower than that of a low-temperature superconductor. Therefore, the propagation of normal zone resistance, which occurs when the HTS transits from the superconducting state to the normal state, is also slower. Thus, it is difficult to detect the abnormal signals by voltage measurement using voltage taps. Moreover, the monitoring signal includes noise generated by interaction between the HTS rotating machinery and the industrial environment. Therefore, when quenching occurs in the HTS rotating machinery, a thermal runaway occurs in the hot spot. Furthermore, the magnetic energy stored in the HTS coil can damage the machinery. For these reasons, a new method is proposed for sensitive quench detection that reduces the noise generated from the power supply and from the HTS rotating machinery, using both an RLC resonance circuit and fast Fourier transform analysis.

show abstract

Section: Discussion and Outlooksmentioning

confidence: 99%