Results 31 to 40 of about 183,928 (205)

A Complete Quasi-3-D Analytical Model of No-Load Magnetic Field of Double-Sided Slotted AFPMMs Considering End Effect

open access: yesIEEE Access, 2018
This paper presents a complete quasi-3-D analytical model combining the solution of Maxwell's equations and the magnetic equivalent circuit for the determination of no-load magnetic field distributions of slotted axial flux permanent magnet machines ...
Wenming Tong   +3 more
doaj   +1 more source

Research on the Airflow and Thermal Performance in a Large Forced Air-Cooled Permanent Magnet Synchronous Machine

open access: yesIEEE Access, 2019
In this paper, the airflow and temperature distribution characteristics of a 1.65MW permanent magnet synchronous machine (PMSM) adopting a totally enclosed self-circulation (TESC) axial ventilation system (AVS) are studied by numerical methods.
Wenming Tong, Shengnan Wu, Renyuan Tang
doaj   +1 more source

Influence of the amount of permanent-magnet material in fractional-slot permanent-magnet synchronous machines [PDF]

open access: yes, 2014
The efficiency of permanent-magnet (PM) synchronous machines with outer rotor and concentrated windings is investigated as a function of the mass of magnets used, keeping the power, volume, and mechanical air-gap thickness constant. In order to be useful
Sergeant, Peter, Van den Bossche, Alex
core   +2 more sources

The eddy current loss segmentation model of permanent magnet for temperature analysis in high‐speed permanent magnet motor

open access: yesIET Power Electronics, 2021
The rotor eddy current loss of high‐speed permanent magnet motor has an important influence on the temperature distribution of permanent magnet. In traditional method, the unbalanced distribution of eddy current in permanent magnet is ignored, and the ...
Meiwei Zhang   +3 more
doaj   +1 more source

Analysis and design optimization of an improved axially magnetized tubular permanent-magnet machine [PDF]

open access: yes, 2004
This paper describes the analysis and design optimization of an improved axially magnetized tubular permanent-magnet machine. Compared with a conventional axially magnetized tubular machine, it has a higher specific force capability and requires less ...
Howe, D., Jewell, G.W., Wang, J.B.
core   +1 more source

Nd-Ce-Fe-B core-shell magnets simulation by using Mumax3 [PDF]

open access: yesAIP Advances
The demagnetization curves as well as the magnetic moments distribution of two types of core-shell structure grains (core (Nd2Fe14B)-transition layer (Nd0.7Ce0.3)2Fe14B-shell (Ce2Fe14B) and core (Ce2Fe14B)-transition layer (Nd0.7Ce0.3)2Fe14B-shell ...
Jianhua Zuo   +5 more
doaj   +1 more source

Asynchronous performance analysis of a single-phase capacitor-start, capacitor-run permanent magnet motor [PDF]

open access: yes, 2005
This work presents a detailed analysis of the asynchronous torque components (average cage, magnet braking torque and pulsating) for a single-phase capacitor-start, capacitor-run permanent magnet motor.
McGilp, M.   +5 more
core   +1 more source

Theoretical calculation model of torque transmission in permanent-magnet couplers

open access: yesAIP Advances, 2021
Permanent-magnet couplers are widely used in various industrial applications due to their high functionality and economy. The magnetic field of the magnetic circuit of a permanent-magnet coupler is divided by the segmentation method, by which the ...
Jianwen Shi, Shuangfu Suo, Guoying Meng
doaj   +1 more source

Position estimation delays in signal injection-based sensorless PMSM drives [PDF]

open access: yes, 2012
The causes of position estimation delays and their effects on the sensorless control of permanent magnet synchronous motor drives are investigated. The position of a permanent magnet synchronous machine is estimated via the injection of high frequency ...
Altomare, A.   +3 more
core   +1 more source

Measurement and Analysis of Hysteresis Loss of Nd-Fe-B Permanent Magnet under Superheated Loss of Magnetism

open access: yesZhongguo dianli, 2020
Rare earth permanent magnet materials, such as NdFeB, are widely used in permanent magnet motors because of their good magnetic properties, low price and good mechanical properties.
Yongjian LI   +4 more
doaj   +1 more source

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