Results 21 to 30 of about 190,194 (299)

Equivalent Circuit to Overcome Thévenin Limit for Receiving Lossy Dipole Antennas Motivated by the Poynting Streamline Analysis

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
In classical antenna theory, the Thévenin equivalent circuit is a commonly used tool to analyze the characteristics of receiving antennas. However, when dealing with a lossy antenna that is near a large load impedance, this circuit has limitations
Junming Diao, Lu Liu
doaj   +1 more source

Performance analysis of linear permanent magnet Vernier machine using mixed subdomain and magnetic equivalent circuit techniques including end‐effect

open access: yesIET Electric Power Applications, 2022
Performance analysis of a linear permanent magnet Vernier machine (LPMVM), which has a complex structure, is mostly based on the finite element methods, while for its optimisation or sensitivity analysis a quick mathematical technique is desirable.
Sohrab Amini, Jawad Faiz
doaj   +1 more source

A Duality Based Quasi-Steady-State Model of Three-Phase Five-Limb Sen Transformer

open access: yesIEEE Access, 2021
A three-phase five-limb transformer is a potential application form of the Sen Transformer (ST), especially for the scenarios with significantly unbalanced load conditions.
Chao Zhou, Song Han, Na Rong, Min Liu
doaj   +1 more source

Design and Development of a Class EF2 Inverter and Rectifier for Multi-megahertz Wireless Power Transfer Systems [PDF]

open access: yes, 2016
This paper presents the design and implementation of a Class EF2 inverter and Class EF2 rectifier for two -W wireless power transfer (WPT) systems, one operating at 6.78 MHz and the other at 27.12 MHz.
Aldhaher, S, Mitcheson, PD, Yates, DC
core   +1 more source

Towards a systematic design of isotropic bulk magnetic metamaterials using the cubic point groups of symmetry [PDF]

open access: yes, 2007
In this paper a systematic approach to the design of bulk isotropic magnetic metamaterials is presented. The role of the symmetries of both the constitutive element and the lattice are analyzed.
A. Sihvola   +7 more
core   +2 more sources

Design and analysis of Lorentz magnetic bearing for magnetic suspended control and sensing gyroscope

open access: yesElectronics Letters, 2021
To improve the control accuracy and output torque of magnetic suspend and control gyroscope, a Lorentz magnetic bearing with double second auxiliary air gap is proposed, and its mechanical structure is introduced.
Shinan Cao, Pingjuan Niu, Qiang Liu
doaj   +1 more source

Design, modelling and analysis of a hybrid-magnet variable-flux PMSM with variable series-parallel magnetic circuit

open access: yesEnergy Reports, 2022
Variable-flux permanent magnet synchronous machines (PMSMs) which use low-coercive-force permanent magnets have gained a lot of attention as a perspective alternative in the variable-speed driving application for their advantages of operating with ...
Guangyuan Qiao   +4 more
doaj   +1 more source

Equivalent Circuit Parameters for Large Brushless Doubly Fed Machines (BDFM) [PDF]

open access: yes, 2014
This paper presents analytical methods to calculate the equivalent circuit parameters for large-scale brushless doubly fed machines (BDFMs) with magnetic wedges utilized for closing stator open slots.
,   +4 more
core   +1 more source

Understanding Switched-Flux Machines: A MMF-Permeance Model and Magnetic Equivalent Circuit Approach

open access: yesIEEE Access, 2022
Due to their particular structure, switched-flux permanent magnet machines have become a very interesting alternative for many applications. This is why some recent studies have been focused in the understanding of the operating mechanism of these ...
Imanol Eguren   +4 more
doaj   +1 more source

Magnetic Equivalent Circuit Model for Performance Prediction of Two-DOF Planar Resolver

open access: yesIEEE Access, 2023
In this paper, an analytical model based on the Magnetic Equivalent Circuit (MEC) method is developed for a planar wound mover two-degree of freedom (2-DOF) resolver. Planar resolvers enable mass, volume, and complexity reductions for position control of
Fateme Zare   +4 more
doaj   +1 more source

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