Results 11 to 20 of about 8,569,882 (345)
Measurement of AC loss down to 25 K in a REBCO racetrack coil for electrical aircraft motor [PDF]
Scientific Reports, 2022 The development of full superconducting motors for electric distributed aircraft propulsion requires to test the stator coils at the operation temperature, usually between 20 and 40 K.
J. Kováč +7 more
doaj +2 more sources
IEEE Access, 2021 Superconducting machine designs have historically focused on an isolated, cryogenic rotor and conventional (copper) stator due to unacceptable levels of AC loss in a superconducting stator.
Shuangrong You +5 more
doaj +2 more sources
IEEE Access, 2020 Current is no longer sinusoidal in modern electric networks because of widespread use of power electronic-based equipments and nonlinear loads. Usually AC loss is calculated for pure sinusoidal current, while it is no longer accurate when current is ...
Mohammad Yazdani-Asrami +4 more
doaj +2 more sources
AC Loss Measurements in a Hybrid REBCO/BSCCO Coil Assembly
IEEE transactions on applied superconductivity, 2017 Wire cost and ac loss are paramount issues for the future uptake of high-temperature superconductor (HTS) ac machines. In particular, new approaches which reduce the total manufacturing cost of HTS coils are critical to the future commercial uptake of ...
Zhe-Nan Jiang +7 more
semanticscholar +2 more sources
AC Losses in High Tc Superconductors - AC Loss Characteristics of Tapes and Power Transmission Cables - [PDF]
TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan), 2010 The AC loss characteristics of high Tc superconductors are reviewed. AC losses are organized according to their generating mechanism and the magnetic field components generating them. Useful analytical formulae of hysteresis losses are presented for the superconductor slab exposed to a parallel magnetic field, for the thin strip exposed to a transverse
雨宮, 尚之
core +4 more sources
CARRIER SIGNAL INJECTION BASED SENSORLESS CONTROL OF PERMANENT MAGNET BRUSHLESS AC MACHINES [PDF]
, 2012 This thesis is focused on the carrier signal injection based sensorless control of Permanent Magnet (PM) Brushless AC (BLAC) machines. Based on the machine saliency property, carrier signal injection based sensorless techniques have been well developed ...
Gong, Liming
core +6 more sources
Energies, 2022 This paper presents an accurate quasi-analytical approximation of frequency-dependent ac resistance of single rectangular conductors. In this work, first, a two-dimensional analytical ac resistance of rectangular conductors is derived.
Barzan Tabei +3 more
doaj +1 more source
Designing for Conductor Lay and AC Loss Variability in Multistrand Stator Windings
IEEE transactions on industry applications, 2023 Vehicle electrification places significant pressures on electric machine design due to the need for increased power densities and mass production. These two requirements couple when designing multistrand stator windings, which exhibit significant ac loss
J. Hoole, P. Mellor, N. Simpson
semanticscholar +1 more source
AC Loss Characteristics of HTS Novel Twisted Cables Composed of Soldered-Stacked-Square (3S) Wires
Energies, 2022 Compared with traditional cables, superconducting multi-stage cables have the natural advantages of greater transmission power and less energy loss, which have gradually attracted attention.
Zhuyong Li +4 more
doaj +1 more source
Experimental Setup for Measurement of AC Loss in HTS under Rotating Magnetic Field
Energies, 2022 High-temperature superconducting materials have shown great potential for the design of large-scale industry applications. However, they are complicated under AC conditions, resulting in penalties such as power loss or AC loss.
Wafa Ali Soomro +5 more
doaj +1 more source