Results 131 to 140 of about 29,760 (311)
AIP AdvancesIn this article, the new three-phase U-shaped and V-shaped consequent-pole hybrid excited machines with separated windings (CHEPMS machine) are proposed for superconducting flywheel energy storage. The stator teeth are divided into two types.
Guangyu Qu +4 more
doaj +1 more source
Analysis of MW-Level Offshore Wind Turbine Generators with Dual Star–Delta Fractional-Slot Windings
EnergiesThis paper investigates the use of fractional-slot concentrated windings (FSCWs) in large-scale (MW level) offshore wind generators. It focuses specifically on a power rating of 3 MW and uses an existing direct-drive synchronous PM machine (DD-SPM) with ...
Isaac Rudden +4 more
doaj +1 more source
High Specific Power Electrical Machines: A System Perspective [PDF]
, 2019 There has been a growing need for high specific power electrical machines for a wide range of applications. These include hybrid/electric traction applications, aerospace applications and Oil and Gas applications.
EL-Refaie, Ayman M., Osama, Mohamed
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Osiris, 2010 Abstract Gottfried Wilhelm Leibniz visited the Harz Mountains more than thirty times and spent almost three full years there between 1680 and 1686. His aim was to install wind machines for draining the Harz silver mines. Despite Leibniz’s best efforts—his commitment bordered on obsession—the enterprise ultimately failed.
openaire +2 more sources
Advanced Engineering Materials, EarlyView.The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan +4 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti +11 more
wiley +1 more source
IET Electric Power ApplicationsPM‐assisted synchronous reluctance machines are becoming so attractive for electrical machine designers because of their lower cost due to minor usage of PMs in comparison to IPM and SMPM machines.
Seyed Mahdiar Taghavi Araghi +2 more
doaj +1 more source
Early fault diagnosis of transformer windings based on the improved MVMD-ELM
Frontiers in Energy ResearchAiming at the problems of weak early fault characteristics of transformer windings, large noise interference and insufficient accuracy of traditional diagnostic methods, this paper proposes an early fault diagnosis method for transformer windings based ...
Qiuyang Lin +7 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar +2 more
wiley +1 more source
Mass-dimensional charakteristics of wind-driven powerplants with horizontal axis of rotation of wind wheel [PDF]
, 2015 В роботі проведено аналіз базових конструкцій вітроенергетичних установок з горизонтальною віссю обертання вітроколеса. Проведено порівняння маси, об'єму та енергоефективності цих установок.
Fedorov, S. I. +5 more
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