# IEEE Transactions on Applied Superconductivity

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Displaying Results 1 - 25 of 25
• ### [Front cover]

Publication Year: 2015, Article Sequence Number: 0000101
| PDF (327 KB)
• ### IEEE Transactions on Applied Superconductivity publication information

Publication Year: 2015, Article Sequence Number: 0000201
| PDF (133 KB)

Publication Year: 2015, Article Sequence Number: 0000302
| PDF (112 KB)
• ### IEEE Transactions on Applied Superconductivity subject categories for article numbering

Publication Year: 2015, Article Sequence Number: 0000401
| PDF (97 KB)
• ### IEEE Transactions on Applied Superconductivity information for authors

Publication Year: 2015, Article Sequence Number: 0000501
| PDF (106 KB)
• ### One-Volt Josephson Arbitrary Waveform Synthesizer

Publication Year: 2015, Article Sequence Number: 1300108
Cited by:  Papers (24)
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A quantum-accurate waveform with an rms output amplitude of 1 V has been synthesized for the first time. This fourfold increase in voltage over previous systems was achieved through developments and improvements in bias electronics, pulse-bias techniques, Josephson junction array circuit fabrication, and packaging. A recently described ac-coupled bipolar pulse-bias technique was used to bias a sup... View full abstract»

• ### Full-Gate Verification of Superconducting Integrated Circuit Layouts With InductEx

Publication Year: 2015, Article Sequence Number: 1300209
Cited by:  Papers (9)
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At present, superconducting integrated circuit layouts are verified through a variety of techniques. A layout-versus-schematic method implemented in Cadence allows extraction of circuit schematics with certain geometry-dependent parameters. Lmeter calculates inductance in a layout network and, with proper setup, may also calculate resistance separately. Recently, InductEx was introduced to calcula... View full abstract»

• ### Low-Noise Serial High-$T_{c}$$\hbox{YBa}_{2}\hbox{Cu}_{3}\hbox{O}_{y}$Superconducting Quantum Interference Devices Based on Bicrystal Junctions

Publication Year: 2015, Article Sequence Number: 1600107
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The fabrication of high-TcYBa2Cu3Oy(YBCO) superconducting quantum interference devices (SQUIDs) that produce low flux noise while maintaining a high fabrication yield continues to challenge scientists. In this paper, we report the characterization of low-noise serial high-TcSQUIDs for biomagnetic applications. Epitaxial high-TcYBCO ... View full abstract»

• ### Effective Constitutive Parameters of High-Temperature Superconducting Split-Ring Resonator Arrays

Publication Year: 2015, Article Sequence Number: 1800107
Cited by:  Papers (6)
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The effective constitutive parameters of a high-temperature superconducting (HTS) metamaterial are extracted from measured scattering parameters at liquid nitrogen temperature (≈75.68 K at the National Institute of Standards and Technology, Boulder, CO, USA). The YBa2Cu3O7split-ring resonator (SRR) arrays are placed inside a WR-90 waveguide with two different orien... View full abstract»

• ### Levitation Performance of Rectangular Bulk Superconductor Arrays Above Applied Permanent-Magnet Guideways

Publication Year: 2015, Article Sequence Number: 3600106
Cited by:  Papers (1)
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Bulk high-temperature superconductors with a rectangular shape are easy to realize a compact assembly, which is promising for maglev applications. In order to find a reasonable array pattern, we have studied the levitation force of four multiseeded rectangular YBaCuO blocks with three possible arrays above two different permanent-magnet guideways (PMGs). Experimental results show that the levitati... View full abstract»

• ### DC and AC Characterization of Pancake Coils Made From Roebel-Assembled Coated Conductor Cable

Publication Year: 2015, Article Sequence Number: 4700104
Cited by:  Papers (3)
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Roebel cables made of high temperature superconducting (HTS) coated conductors can carry high currents with a compact design and reduced ac losses. Therefore, they are good candidates for manufacturing coils for HTS applications such as motors and generators. In this paper, we present the experimental dc and ac characterization of several coils assembled from a 5-m-long Roebel cable built at Karls... View full abstract»

• ### DC Resistance Performance of the Low-Resistance$\hbox{Nb}_{3}\hbox{Sn}$Joints for the CHMFL Hybrid Magnet

Publication Year: 2015, Article Sequence Number: 4800104
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The superconducting coils of a 40-T hybrid magnet were designed with Nb3Sn cable-in-conduit conductors wound in layers or double pancakes, which are connected in series by joints. Two kinds of electrical joints have been designed for the different terminals of the superconducting coils. The “terminal joint” is for the joints between the terminals of the superconducting coils and the end... View full abstract»

• ### Fabrication and Test of an 8-T Superconducting Split Magnet System With Large Crossing Warm Bore

Publication Year: 2015, Article Sequence Number: 4900105
Cited by:  Papers (1)
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A conduction-cooled superconducting split magnet system with large crossing warm bore has been successfully constructed in our laboratory for material processing applications. The magnet system design was described in a previous paper. The magnet is composed of six NbTi low temperature superconducting coils, which generate 5.5-T central magnetic field and two Bi2223/Ag high temperature superconduc... View full abstract»

• ### Comparison of Theoretical and Numerical Electromagnetic Modeling for HTS Synchronous Generator

Publication Year: 2015, Article Sequence Number: 5200107
Cited by:  Papers (2)
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In this paper, a detailed comparison of theoretical and numerical modeling methods of large-scale high-temperature superconducting (HTS) synchronous generator is carried out. The Maxwell's equations are employed to obtain the theoretical magnetic model of the generator. In addition, the finite-element method has been considered to achieve an accurate model of the machine. The results are validated... View full abstract»

• ### Experimental Study of Thrusts of a Cylindrical Linear Synchronous Motor With One or More YBCO Bulk Magnets as the Excitation System

Publication Year: 2015, Article Sequence Number: 5200206
Cited by:  Papers (1)
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The thrusts of a cylindrical linear synchronous motor with one or more YBCO bulk magnets as the excitation system were measured for the first time and are presented in this paper. The YBCO bulk magnets are cylindrical with a diameter of 30 mm and a height of 18 mm. The armature of the motor is three phase and made of copper wire coils. The inner diameter of the armature is 40 mm. At the temperatur... View full abstract»

• ### Optimal Electromagnetic Design of a Nonsalient Magnetic-Cored Superconducting Synchronous Machine Using Genetic Algorithm

Publication Year: 2015, Article Sequence Number: 5200309
Cited by:  Papers (3)
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An optimum electromagnetic design of a nonsalient magnetic-cored superconducting synchronous machine (SSM) is presented in this paper. First, self- and mutual inductances of a nonsalient magnetic-cored SSM are calculated using the magnetic energy method and analytical equations of magnetic vector potential. Then, a design approach for an SSM machine is proposed based on the inductances of the mach... View full abstract»

• ### A Study of the Composite Insulation Breakdown Properties for Wrapping Cables in Liquid Nitrogen

Publication Year: 2015, Article Sequence Number: 5400106
Cited by:  Papers (1)
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To optimize the insulation design of high-temperature superconductivity (HTS) cable, the multilayer wrapping cable insulation properties in the liquid nitrogen should be studied. In this paper, we investigated the breakdown properties of multilayer wrapping of cable insulation in liquid nitrogen. AC and dc breakdown tests of a minimodel cable with an insulation floor composed of polypropylene lami... View full abstract»

• ### Winding Design and Electromagnetic Analysis for a 1250-kVA HTS Transformer

Publication Year: 2015, Article Sequence Number: 5500107
Cited by:  Papers (1)
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Because high-temperature superconducting (HTS) coils possess low-resistivity, large-current-carrying, and state transition characteristics, the design of HTS transformers is much different from that of conventional ones. The general design of 10.5-kV/1250-kVA HTS transformer is given first. In the electromagnetic design of the 1250-kVA HTS transformer windings via field-circuit coupling simulation... View full abstract»

• ### Cryogenic Power Conversion for SMES Application in a Liquid Hydrogen Powered Fuel Cell Electric Vehicle

Publication Year: 2015, Article Sequence Number: 5700111
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Cryogenic power conversion for superconducting magnetic energy storage (SMES) application in a liquid hydrogen (LH<sub>2</sub>) powered fuel cell electric vehicle (FCEV) is investigated. Principle and operation strategy of the SMES-based onboard energy system are presented for various operational models. A typical FCEV system equipped with a 720-kJ SMES device is conceptually designed ... View full abstract»

• ### Two-Dimensional Anisotropic Model of YBCO Coated Conductors

Publication Year: 2015, Article Sequence Number: 6600112
Cited by:  Papers (12)
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The ability of second-generation YBCO coated conductor (CC) tapes to transport high current densities at high temperature, i.e., up to 77 K, and at very high magnetic fields, i.e., above 20 T, are pushing the use of these tapes in various applications, from magnet to power system technologies. An accurate study of their quench behavior is mandatory for the design and safe use of cables and magnets... View full abstract»

• ### Fabrication of Large and High-Performance FeSe Bulk Superconductors by a Simple Liquid–Solid Diffusion Method

Publication Year: 2015, Article Sequence Number: 7400103
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FeSe polycrystalline superconductors with dimensions over 10 × 10 × 3 mm3were fabricated by diffusing liquid Se into an iron tablet at 650 °C. Scanning electron microscopy and X-ray diffraction analyses were performed on the FeSe samples, and they showed that the main phase throughout the bulk is tetragonal β-FeSe and the grains are well crystallized and connected. The critical transiti... View full abstract»

• ### Determination of the Critical Current Density in$\hbox{YBa}_{2}\hbox{Cu}_{3}\hbox{O}_{7-\delta}$Thin Films Measured by the Screening Technique Under Two Criteria

Publication Year: 2015, Article Sequence Number: 8000105
Cited by:  Papers (1)
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We report the determination of critical current density Jcflowing in YBa2Cu3O7-δsuperconducting thin films by two independent criteria. The estimation of Jcwas carried out by an inductive technique, i.e., the so-called screening technique. Both the imaginary part of the fundamental harmonic of susceptibility χ1" and the third harmon... View full abstract»

• ### Modeling Experimental Magnetization Cycles of Thin Superconducting Strips by Finite-Element Simulations

Publication Year: 2015, Article Sequence Number: 8200107
Cited by:  Papers (7)
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To broaden the use of an adaptive resistive algorithm (ARA), we present a 3-D model able to reproduce the experimental magnetic moment loop for a finite-size superconducting strip in a perpendicular field. We also develop the same model by using H-formulation, to strengthen the ARA results. We find that 2-D models computed with the two different approaches, i.e., ARA and H-formulation, provide sim... View full abstract»

• ### Scaling Law for Hysteresis Losses in Round Superconductors Magnetized by Alternating, Rotating or Elliptical Magnetic Fields

Publication Year: 2015, Article Sequence Number: 8200212
Cited by:  Papers (1)
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AC losses in an isolated superconducting round wire with a power-law electrical behavior produced by the combined effect of transverse alternating and rotating fields, i.e., an elliptical field, are investigated. The goal is to provide semianalytical expressions of the magnetization losses with a high enough reliability to be used in sizing code development or optimization methods. The fit express... View full abstract»

• ### Design, Fabrication, and Testing of a Low AC-Loss Conduction-Cooled Cryostat for Magnetization Loss Measurement Apparatus

Publication Year: 2015, Article Sequence Number: 8200308
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Conduction cooling has become a viable alternative for cooling superconducting devices. However, the thermal pathways of a conduction-cooled cryostat can be problematic for applications where time-varying magnetic fields are present. Such alternating magnetic fields are present, e.g., in a magnetization ac-loss measurement system. The losses in the thermal pathways are unwanted as they increase th... View full abstract»

## Aims & Scope

IEEE Transactions on Applied Superconductivity contains articles on the applications of superconductivity and other relevant technology.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Alexander Polasek
Electrical Energy Research Center (Cepel)

polasek@cepel.br