Results 1 to 10 of about 183,928 (205)

Low temperature latching solenoid [PDF]

open access: yes, 1981
A magnetically latching solenoid includes a pull-in coil and a delatching coil. Each of the coils is constructed with a combination of wire materials, including material of low temperature coefficient of resistivity to enable the solenoid to be operated ...
Wang, W. S.
core   +1 more source

Effect of optimal torque control on rotor loss of fault-tolerant permanent-magnet brushless machines [PDF]

open access: yes, 2002
A faulted phase in a fault-tolerant permanent-magnet brushless machine can result in significant torque ripple. However, this can be minimized by using an appropriate optimal torque control strategy.
Atallah, K.   +3 more
core   +1 more source

Double Layer Magnet Design Technique for Cogging Torque Reduction of Dual Rotor Single Stator Axial Flux Brushless DC Motor

open access: yesIranian Journal of Electrical and Electronic Engineering, 2020
Cogging torque is the major limitation of axial flux permanent magnet motors. The reduction of cogging torque during the design process is highly desirable to enhance the overall performance of axial flux permanent magnet motors.
A. N. Patel, B. N. Suthar
doaj  

Study of free-piston Stirling engine driven linear alternators [PDF]

open access: yes
The analysis, design and operation of single phase, single slot tubular permanent magnet linear alternator is presented. Included is the no-load and on-load magnetic field investigation, permanent magnet's leakage field analysis, parameter identification,
Chen, C., Nasar, S. A.
core   +1 more source

Analysis of the Cogging Torque Reduction in Permanent Magnet Generators for a Very Low Wind Speed

open access: yesEnergies
This research examines the magnet structure’s effect on the performance of permanent magnet generators. The permanent magnet generator’s cogging torque (CT) is one of the characteristics that this article examines.
Syamsir Abduh   +2 more
doaj   +1 more source

Separated magnet yoke for permanent magnet linear generator for marine wave energy converters [PDF]

open access: yes, 2014
In this paper the performance of a longitudinal flux permanent magnet linear generator (PMLG) for wave energy converters (WEC) is investigated. The influence of the number of slots per pole, phase q and the number of stator's winding sections are ...
A.F. Zobaa   +32 more
core   +1 more source

Hydrometallurgical Recovery of Rare Earth Elements from NdFeB Permanent Magnet Scrap: A Review

open access: yesMetals, 2020
NdFeB permanent magnet scrap is regarded as an important secondary resource which contains rare earth elements (REEs) such as Nd, Pr and Dy. Recovering these valuable REEs from the NdFeB permanent magnet scrap not only increases economic potential, but ...
Yuanbo Zhang   +5 more
doaj   +1 more source

Spontaneous spinning of a magnet levitating over a superconductor

open access: yes, 2003
A permanent magnet levitating over a superconductor is found to spontaneously spin, overcoming resistance to air friction. We explain the physics behind this remarkable effect.Comment: See http://physics.ucsd.edu/~jorge/spinning.html for movie clips of
D.J. Hirsch   +6 more
core   +1 more source

Application of permanent magnet synchronous direct-drive traction system on Xuzhou metro line 1

open access: yes机车电传动, 2022
Metro trains have the advantages of high starting acceleration, high operating speed, punctuality and large carrying capacity, but energy consumption is also an important issue that needs close attention in metro operation.
ZENG Yun   +3 more
doaj  

Power Extraction Strategy of a Robust kW Range Marine Tidal Turbine Based on Permanent Magnet Synchronous Generators and Passive Rectifiers [PDF]

open access: yes, 2014
This paper presents a kW range marine tidal current power generation system consisting of a fixed pitch marine current turbine (MCT) with two permanent magnet synchronous generators in the turbine shaft, two diode rectifiers (each rectifier is associated
CHARPENTIER, Jean-Frederic   +2 more
core   +2 more sources

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