Results 91 to 100 of about 11,364,674 (354)
Random Asymmetric Carrier PWM Method for PMSM Vibration Reduction
IEEE Access, 2020 The underwater noise can be caused by the radial electromagnetic vibration of permanent magnet synchronous motor (PMSM) for electric propulsion. The difficulty in decreasing the underwater noise is not only the high-frequency but also low-frequency ...
Jiaqun Xu, Hongqiang Zhang
doaj +1 more source
Advanced Functional Materials, EarlyView.Two‐photon grayscale lithography (2GL) enables high‐speed and precise 3D printing of thermolyzed silica glass microstructures with optical‐grade surface quality, high quality factors, and mechanical strength utilizing a custom‐made pre‐glass resist based on polyhedral oligomeric silsesquioxane (POSS) modified with a high‐sensitivity Norrish type II ...
Jonathan L. G. Schneider +4 more
wiley +1 more source
Current Generated Harmonics and Their Effect Upon Electrical Industrial Systems [PDF]
, 1995 This paper provides a general overview of harmonics and addresses the causes of current generated harmonics in electrical systems. In addition, problems caused by current generated harmonics and their affects upon different types of electrical equipment;
Alexander, H. R., Rogge, D. S.
core
Thermally Robust Spin–Orbit Torque Switching in Low‐Resistivity Mo‐Alloyed β‐W Heterostructures
Advanced Functional Materials, EarlyView.Mo‐alloyed β‐W heterostructures exhibit enhanced spin‐orbit torque efficiency, reduced resistivity and switching current density, and reliable operation from −50 to +150°C. The optimized W87.3Mo12.7 device achieves high spin Hall conductivity with thermal robustness, highlighting its potential for energy‐efficient magnetic memory and automotive ...
Han Seok Ko +7 more
wiley +1 more source
Comparison of Control Algorithms for the Suppression of Current Harmonics in PMSMs [PDF]
, 2021 Electrical machines exhibit more or less strong current harmonics depending on their physical structure. The more slots are used per strand, the fewer harmonics an electrical machine has [1]. However, the manufacturing costs also increase with the number
Arenz, Stefan +2 more
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Dopant Distribution in Ga‐Implanted CdO—A Correlative Microscopy and Molecular Dynamics Study
Advanced Functional Materials, EarlyView.This work demonstrates that ion implantation offset angle could modulate carrier concentration and mobility in cadmium oxide thin films. Combining correlative microscopy workflow and molecular dynamics simulations, this study reveals the control of interfacial cluster density with tailoring implantation angles, and the optimum offset angle that ...
Morvarid Ghorbani +7 more
wiley +1 more source
Eccentricity harmonics detection-based speed estimation approach in a sensorless induction motors [PDF]
, 2015 This paper presents an eccentricity harmonics detection-based speed estimation method in a sensorless efficient induction motors. Because of the influence of spectrum leakage, the motor current signature signals analysis method, which is based the stator
Hu JT(胡静涛) +3 more
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Investigation of current harmonics using FEM on different rotor types of PMSMs [PDF]
, 2011 Current harmonics of the permanent magnet synchronous motors (PMSMs) varies with the shaft structures. These harmonics produce additional loses at both windings and the core of a PMSM and increase the temperature inside the machine.
M. Emin Guven +9 more
core +1 more source
Study of Excitation Characteristics of Traction Machine/Drive Systems
Energies, 2019 In order to accurately evaluate the performance of a traction machine/drive system, it is necessary to have an accurate excitation source which considers current harmonics.
Wenying Jiang, Qiqi Guo, Zhen Zhang
doaj +1 more source
Advanced Healthcare Materials, EarlyView.Lymphotropic nanoplatforms integrate multimodal imaging with therapeutic guidance to map sentinel and tumor‐draining lymph nodes, revealing functional drainage, metastatic involvement, and nodal accessibility, while providing mechanistic insight to support precision surgical and therapeutic interventions.
Xu Chen +7 more
wiley +1 more source