Results 41 to 50 of about 13,756 (306)
High-Torque-Density Low-Cost Magnetic Gear Utilizing Hybrid Magnets and Advanced Materials [PDF]
, 2019 Two major challenges of existing high-performance magnetic gears are: (i) High content of rare-earth permanent magnets which results in high cost as well as price fluctuation; (ii) Conflict between mechanical and electromagnetic performances, especially ...
Al-Qarni, Ali Hussain +2 more
core +2 more sources
Energies, 2019 This paper presents a commutation torque ripple suppression strategy for brushless DC motor (BLDCM) in the high-speed region, which considers the back electromotive force (back-EMF) variation during the commutation process. In the paper, the influence of
Xinmin Li +5 more
doaj +1 more source
A cascaded H-bridge BLDC drive incorporating battery management [PDF]
, 2007 A multilevel BLDC drive is proposed using cascaded H-bridges with isolated sources to provide superior output waveforms and reduced current ripple whilst incorporating observer based SoC estimation.
Bingham, Chris +3 more
core +1 more source
Neurovascular Contacts in the Pathophysiology of Neuralgic Amyotrophy: An Observational Study
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Neuralgic amyotrophy (NA) is a prevalent, monophasic, multifocal immune‐mediated neuropathy. A distinctive characteristic of the disease is the occurrence of nerve or fascicle constrictions and torsions (NA‐associated focal nerve lesions, NAFL). The pathophysiology underlying this phenomenon remains to be fully elucidated.
Johannes Fabian Holle +4 more
wiley +1 more source
IEEE AccessThis paper provided a mechanism of torque ripple reduction by flux barriers using field-unit type wound field motors as the subject. The field-unit type wound field motor proposed in the previous study had high torque density, but there was the problem ...
Nguyen Minh Khoa, Yuki Hidaka
doaj +1 more source
Rotation and Neoclassical Ripple Transport in ITER
, 2017 Neoclassical transport in the presence of non-axisymmetric magnetic fields causes a toroidal torque known as neoclassical toroidal viscosity (NTV). The toroidal symmetry of ITER will be broken by the finite number of toroidal field coils and by test ...
Dorland, W. +5 more
core +1 more source
DC-link control filtering options for torque ripple reduction in low power wind turbines [PDF]
, 2016 Small Wind Energy Conversion Systems (WECSs) are becoming an attractive option for distributed energy generation. WECSs use permanent magnet synchronous generators (PMSGs) directly coupled to the wind turbine and connected to the grid through a single ...
Campos-Gaona, David +3 more
core +1 more source
Advanced Engineering Materials, EarlyView.A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora +4 more
wiley +1 more source
Improving the torque generation in self-sensing BLDC drives by shaping the current waveform [PDF]
, 2016 Brushless DC drives are widely used in different fields of application because of their high efficiency and power density. Torque ripple can be considered one of the drawbacks of these drives.
Darba, Araz +2 more
core +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source