AC Losses and Material Degradation Effects in a Superconducting Tape for SMES Applications

AbstractCertain practical applications of YBCO coated conductors (CC) involve superconducting tapes wound in coils. In such a configuration the superconducting tape is arranged as closely packed turns, leading to an increase of the magnetic field generated by the current in the tapes and, consequently, a significant increase in the AC losses, with respect to an ‘isolated’ tape. In order to predict and reduce the refrigeration requirements of applications, it is therefore very important to be able to quantify the magnitude of such AC losses, both experimentally and by means of numerical calculations.

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Modeling of Thermomechanical Processes in Energetic Equipment Elements Under In-Service Conditions and Estimation of their Operational Life with Accounting for a Material Degradation, Damages and Repair Procedures

Nauka ta innovacii ◽

10.15407/scin9.01.021 ◽

2013 ◽

Vol 9 (1) ◽

pp. 21-32 ◽

Cited By ~ 1

Author(s):

B.D. Drobenko ◽

Keyword(s):

Material Degradation ◽

Operational Life ◽

Service Conditions ◽

Thermomechanical Processes

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Coil size scaling laws for AC losses in ED dipoles

10.2172/1156033 ◽

1979 ◽

Author(s):

R. Shafer

Keyword(s):

Scaling Laws ◽

Ac Losses ◽

Size Scaling ◽

Coil Size

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Experimental study on magnesium wire–polylactic acid biodegradable composite implants under in vitro material degradation and fatigue loading conditions

Composite Structures ◽

10.1016/j.compstruct.2021.114267 ◽

2021 ◽

pp. 114267

Author(s):

Syed Hasan Askari Rizvi ◽

Jiale-Che ◽

Ali Mehboob ◽

Usama Zaheer ◽

Seung-Hwan Chang

Keyword(s):

Experimental Study ◽

Polylactic Acid ◽

Fatigue Loading ◽

Loading Conditions ◽

Material Degradation ◽

Biodegradable Composite

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Research on current carrying capacity of Bi-2223/Ag superconducting tape in the temperature range of 75–105 K

Physica C Superconductivity ◽

10.1016/j.physc.2021.1353825 ◽

2021 ◽

Vol 582 ◽

pp. 1353825

Author(s):

Tianhui Yang ◽

Wenxin Li ◽

Ying Xin ◽

Xiaogang Chen ◽

Chao Yang ◽

...

Keyword(s):

Carrying Capacity ◽

Superconducting Tape ◽

Temperature Range

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Fracture Toughness of Large Forgings for Power Producing Industry

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.577-578.593 ◽

2013 ◽

Vol 577-578 ◽

pp. 593-596 ◽

Cited By ~ 1

Author(s):

Václav Mentl

Keyword(s):

Fracture Toughness ◽

Chemical Composition ◽

Steam Turbine ◽

Mechanical Treatment ◽

Material Degradation ◽

The Real ◽

Operational Safety ◽

Local Properties ◽

Thermo Mechanical Treatment ◽

Shape And Size

The steam turbine rotors represent large components both in radial and axial directions. Their local properties generally differ from one forging to another, or if we compare head and bottom parts of the original ingot, or central and circumferential localities of one rotor body respectively, or if we compare the properties of separate discs e.g. in the case of welded rotors. These differences stem from both even slight changes in the chemical composition (of separate heats or even within one ingot) and thermo-mechanical treatment and in the differences in technology with respect to the real shape and size of the forgings in question. In the paper, the consequences of the differences in fracture toughness characteristics in various rotor localities are discussed with respect to the rotors operational safety taking into account the existence of cracks and material degradation.

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Semianalytical Modeling of AC Losses in HTS Stacks Near Ferromagnetic Parts

IEEE Transactions on Applied Superconductivity ◽

10.1109/tasc.2020.3033697 ◽

2021 ◽

Vol 31 (1) ◽

pp. 1-6

Author(s):

Yazid Statra ◽

Hocine Menana ◽

Bruno Douine

Keyword(s):

Ac Losses

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Hairpin Windings: Sensitivity Analysis and Guidelines to Reduce AC Losses

2021 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) ◽

10.1109/wemdcd51469.2021.9425643 ◽

2021 ◽

Author(s):

Eraldo Preci ◽

David Gerada ◽

Michele Degano ◽

Giampaolo Buticchi ◽

Christopher Gerada ◽

...

Keyword(s):

Sensitivity Analysis ◽

Ac Losses

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Development of a Cryogen-Free Compact 3 T Superconducting Magnet for an Electromagnetic Property Measurement System

Applied Sciences ◽

10.3390/app11073074 ◽

2021 ◽

Vol 11 (7) ◽

pp. 3074

Author(s):

Jae Young Jang ◽

Myung Su Kim ◽

Young Jin Hwang ◽

Seunghyun Song ◽

Yojong Choi ◽

...

Keyword(s):

High Temperature ◽

Measurement System ◽

Electromagnetic Property ◽

Superconducting Magnet ◽

Optimized Design ◽

Magnet System ◽

Superconducting Tape ◽

High Temperature Superconducting ◽

Target Field ◽

Property Measurement

A cryogen-free portable 3 T high-temperature superconducting magnet for an electromagnetic property measurement system has been developed to serve as a user facility at the Korea Basic Science Institute. The metallic insulation method was adopted to reduce the charging delay without sacrificing the self-protecting feature. A genetic-algorithm-aided optimized design was carried out to minimize the superconducting tape consumption while satisfying several design constraints. After the design, the compact high-temperature superconducting magnet composed of eight double-pancake coil modules was wound with high-temperature superconducting tape and stainless steel tape, and integrated with a two-stage cryo-cooler. The 3 T magnet was successfully cooled to approximately 20 K with a cryo-cooler and reached the target field of 3 T without any problems. Long-term measurements and a range of other tests were also implemented to verity the performance of the magnet. Test results demonstrated the feasibility of a cryogen-free portable high-temperature superconducting magnet system for electromagnetic property measurement experiments.

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