Results 61 to 70 of about 490 (132)

The Iseult Coil, a Hybrid RF Coil for the First Human Brain Images at 11.7 T: Receive Performance Comparison With a Twin Coil at 7 T

NMR in Biomedicine, Volume 39, Issue 10, October 2026.
Our 8‐Tx/32‐Rx coil is based on two rows of transceiver microstrips intertwined with receive‐only loops. Comparison of the intrinsic SNR at 7 and 11.7 T leads to a 2.2 ratio for the human brain, and 2.75 for a 16‐cm agar sphere, translating into α = 1.5 and 1.95 in the B0α$$ {B}_0^{\alpha } $$‐SNR model, respectively.
Alexis Amadon, Paul‐François Gapais, Guillaume Ferrand, Vincent Gras, Franck Mauconduit, Caroline Le Ster, Alexandre Vignaud, Nicolas Boulant, Michel Luong   +8 more
wiley   +1 more source

Investigation of the impact of rotor shaping on the torque and radial force harmonics of a V‐shape interior permanent magnet synchronous machine

IET Electric Power Applications
This paper introduces a technique aimed at improving the performance of an interior permanent magnet synchronous machine (IPMSM) by reducing torque ripple and radial force harmonics.
Moien Masoumi, Alex Tsao, Charitha Abeyrathne, Ashish Sahu, Berker Bilgin   +4 more
doaj   +1 more source

Evaluation of magnetic orientation in dual-stator linear permanent magnet vernier machine for wave energy conversion

e-Prime: Advances in Electrical Engineering, Electronics and Energy
The Permanent Magnet Vernier Machine (PMVM) is favored for wave energy conversion due to its high torque production at low speeds and straightforward design.
Nima Arish
doaj   +1 more source

Direct Thrust Force and Flux Control of a PM-Linear Synchronous Motor Using Fuzzy Sliding-Mode Observer

Advances in Electrical and Electronic Engineering, 2015
In this paper, a fuzzy sliding-mode observer, which uses sigmoid function for speed sensorless control of permanent-magnet linear synchronous motor (PMLSM) is proposed.
Saeed Masoumi Kazraji, Mohammad Bagher Bannae Sharifian   +1 more
doaj   +1 more source

Experimental verification of an angle-sensorless control scheme for bearingless permanent magnet machines

Mechanical Engineering Journal, 2017
Bearingless machines are used for a variety of applications with demand for low mechanical loss, low wear and low contamination. These machines use contact-free magnetic suspension to levitate the rotor. The control of the machine requires precise radial
Tobias WELLERDIECK, Thomas NUSSBAUMER, Johann W. KOLAR   +2 more
doaj   +1 more source

Magnet that absorbs back electromotive force (MABEF). Magnetic Energy Absorption Chip (MEAC)

Abstract: This definitive research paper expands the principles of Magneto-Structural Isomerization (MSI) and Non-Radiative Energy Quenching to formalize the foundational material selection and sub-nanometer crystal configurations of MABEF Class I-III and MEAC Class I-III quantum media.
  +8 more sources

Control strategy for a three-phase vibrating linear motor based on back electromotive force estimation

Bulletin of NTU "KhPI". Series: Problems of Electrical Machines and Apparatus Perfection. The Theory and Practice
Modern industry requires high-precision control of vibrating electromechanical systems, which are widely used in many industries. Variable load modes require the drive to have good control properties while maintaining the necessary energy parameters of the technological process.
Roman Bondar, Hennadii Holenkov, Oleh Bondar   +2 more
openaire   +3 more sources

Research on Performance of Interior Permanent Magnet Synchronous Motor with Fractional Slot Concentrated Winding for Electric Vehicles Applications

World Electric Vehicle Journal
The fractional-slot, concentrated-winding, interior permanent magnet synchronous motor (FSCW IPMSM) has advantages, such as reducing motor copper consumption, improving flux-weakening capability, and motor fault tolerance, and has certain development ...
Zhiqiang Xi, Lianbo Niu, Xianghai Yan, Liyou Xu   +3 more
doaj   +1 more source

An Analytical Solution to the Electromagnetic Performance of an Ultra-High-Speed PM Motor

Journal of Electrical and Computer Engineering, 2019
Bipolar rotors with cylindrical permanent magnets (PMs), which are magnetized in parallel, are generally used in ultra-high-speed permanent magnet synchronous motors (PMSMs). Aiming for this type of PMSM, two methods, namely, the Poynting theorem and the
Wenjie Cheng, Zhikai Deng, Ling Xiao, Bin Zhong, Yanhua Sun   +4 more
doaj   +1 more source

Multi-Objective Optimization Strategy for Commercial Vehicle Permanent Magnet Water Pump Motor Based on Improved Sparrow Algorithm

Applied Sciences
In order to achieve multi-objective optimization for a permanent magnet water pump motor in heavy commercial vehicles, we propose a strategy based on response-surface methodology and the improved sparrow algorithm (CGE-SSA).
Wenjun Pei, Ping Xiao, Jiabao Pan, Zhihao Li, Aoning Lv   +4 more
doaj   +1 more source