Results 131 to 140 of about 24,183 (312)

A Thorough Procedure to Design Surface-Mounted Permanent Magnet Synchronous Generators

Machines
This paper sets forth a thorough procedure to design surface-mounted permanent magnet synchronous generators. Since synchronous generators generate the majority of electrical energy, their relevance in society nowadays is substantial.
Gustavo Garbelini de Menezes, Narco Afonso Ravazzoli Maciejewski, Elissa Soares de Carvalho, Thiago de Paula Machado Bazzo   +3 more
doaj   +1 more source

Multi-disciplinary robust design of variable speed wind turbines [PDF]

, 2011
This paper addresses the preliminary robust multi-disciplinary design of small wind turbines. The turbine to be designed is assumed to be connected to the grid by means of power electronic converters.
Campobasso, Michele Sergio, Dellantonio, Michele, Minisci, Edmondo, Montecucco, Andrea, Vasile, Massimiliano   +4 more
core  

Coherent Control of Nitrogen Nuclear Spins via the VB−${\rm V}_B^-$‐Center in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
This study demonstrates coherent control of 15N nuclear spins coupled to VB−${\text{V}}_{\text{B}}^{-}$ centers in isotope‐enriched hexagonal boron nitride. Selective addressing via spin‐state mixing enables Rabi driving, quantum gates, and coherence times exceeding 10 μs$\umu{\rm s}$.
Adalbert Tibiássy, Charlie J. Patrickson, Thomas Poirier, James H. Edgar, Bruno Lopez‐Rodriguez, Viktor Ivády, Isaac J. Luxmoore   +6 more
wiley   +1 more source

Influence of Parameters on the Excitation Power of Third Harmonic Brushless Hybrid Excitation Generator

Energies
Hybrid-excited generators have a wide voltage regulation capability or a wide range of variable-speed constant-voltage output capability, providing a significant advantage in the new energy power generation field.
Yonghong Xia, Jianxin Xu, Jinhui Hu, Yeguo Yu, Ying Chen, Jingming Zhang   +5 more
doaj   +1 more source

Brushless dc motor and controller Final report, Sep. 1969 - Mar. 1970 [PDF]

Design, fabrication, and functional testing of brushless dc motors with split winding connected in series or ...
Hertzendorf, B. H., Manteuffel, E. W.
core   +1 more source

Transparent UV‐Curable Self‐Sanitizing Coatings Applicable to Diverse Surfaces and High‐Touch Screens to Mitigate Deadly Pathogen Transmission

Advanced Functional Materials, EarlyView.
Development of a transparent, self‐sanitizing antimicrobial coating technology applicable to a wide range of materials and surfaces‐including touchscreens, transparent substrates, and metal, plastic, and glass‐regardless of pathogen type. The spray‐coated, UV‐cross‐linked imidazole‐based quaternary ammonium chloride materials provide broad‐spectrum ...
Surjith Kumaran, Sumin Han, Euna Oh, Chunghee Jo, Hyerin Shin, Dae‐Hong Ko, Hyo‐Jick Choi   +6 more
wiley   +1 more source

Universal Electronic‐Structure Relationship Governing Intrinsic Magnetic Properties in Permanent Magnets

Advanced Functional Materials, EarlyView.
Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley   +1 more source

Design of a Permanent-Magnet Synchronous Generator for a 2 MW Gearless Horizontal-Axis Wind Turbine According to its Capability Curves

Iranian Journal of Electrical and Electronic Engineering, 2015
Permanent-Magnet Synchronous Generators (PMSGs) exhibit high efficiency and power density, and have already been employed in gearless wind turbines. In the gearless wind turbines, due to the removal of the gearbox, the cogging torque is an important ...
A. Darijani, A. Kiyoumarsi, H. A. Lari, B. Mirzaeian Dehkordi, Sh. Bekhrad, S. Rahimi Monjezi   +5 more
doaj  

Application of permanent magnet synchronous generators within small-scale hydropower systems [PDF]

Journal on Processing and Energy in Agriculture, 2010
In the new millennium, the demand for electric power is expected to increase more rapidly. Hydroelectric power plants using hydro potential of small rivers are becoming one of the key issues in the energy sector. Hydro energy is one of the most important
Reljić Dejan, Čorba Zoltan, Dumnić Boris   +2 more
doaj  

Variable-speed Generators with Flux Weakening [PDF]

, 1993
A cost-competitive, permanent-magnet 20 kW generator is designed such that the following criteria are satisfied: an (over) load capability of at least 30 kW over the entire speed range of 60-120 rpm, generator weight of about 550 lbs with a maximum ...
Carlin, P. W., Fardoun, A. A., Fuchs, E. F.   +2 more
core   +1 more source