Results 11 to 20 of about 980,524 (334)

Novel permanent magnet brushless machines having segmented Halbach array [PDF]

open access: yes, 2013
Permanent magnet brushless machines having Halbach array exhibit a number of attractive features. Therefore, they have been increasingly applied to different market sectors, including aerospace, industrial, domestic, renewable, and healthcare, etc.
Shen, Yang
core   +6 more sources

The electromagnetic performance of brushless permanent magnet DC motors - with particular reference to noise and vibration. [PDF]

open access: yes, 1991
A comprehensive analytical technique is developed for predicting the instantaneous magnetic field distribution in radial-field, surface-mounted permanent magnet brushless DC motors under any load condition and commutation strategy.
Zhu, Zi-Qiang
core   +6 more sources

Computation of the voltage-driven flux-MMF diagram for saturated PM brushless motors [PDF]

open access: yes, 2005
The flux-MMF diagram or "energy conversion loop" is a powerful tool for computing the average torque of saturated permanent-magnet brushless motors, especially when the assumptions underlying classical dq theory are violated, as they often are in modern ...
McGilp, M.I.   +3 more
core   +8 more sources

Effect of winding harmonics on the asynchronous torque of a single-phase line start permanant-magnet motor [PDF]

open access: yes, 2005
This paper presents an analytical method for calculating the effect of winding harmonics on the asynchronous torque of a single-phase line-start permanent-magnet motor.
McGilp, M.I.   +5 more
core   +9 more sources

Improvement of Torque Performance and Energy Density of PM-Type Vernier Motor Utilizing Saddle Coil and Salient Pole

open access: yesApplied Sciences, 2021
In electric motors, the use of rare-earth magnets has been increasing rapidly. A stronger magnet force of the magnet enables the motor’s higher performance, resulting in the most high-performance motors generally using rare-earth magnets.
Sungwoo Chang   +3 more
doaj   +1 more source

Data-Driven Permanent Magnet Temperature Estimation in Synchronous Motors With Supervised Machine Learning: A Benchmark [PDF]

open access: yesIEEE transactions on energy conversion, 2020
Monitoring the magnet temperature in permanent magnet synchronous motors (PMSMs) for automotive applications is a challenging task for several decades now, as signal injection or sensor-based methods still prove unfeasible in a commercial context ...
Wilhelm Kirchgässner   +2 more
semanticscholar   +1 more source

Design of Low-Cost Synchronous Machine to Prevent Demagnetization

open access: yesEnergies, 2020
The request for high efficiency motor paves the way for the replacement of induction motors with permanent magnet synchronous motors. Although the efficiency is increased, for medium and high power, the current ripple causes significant additional losses
Claudio Bianchini   +3 more
doaj   +1 more source

A Review on Analysis Methods and Research Status of Hysteresis Motor

open access: yesEnergies, 2023
A hysteresis motor produces output torque through the hysteresis effect of magnetic materials. It has the advantages of a simple structure, high-speed operation, high temperature resistance, low noise and self-starting capability.
Bo Gao   +4 more
doaj   +1 more source

Mechanism of Torque Ripple Generation by Time and Space Harmonic Magnetic Fields in Permanent Magnet Synchronous Motors

open access: yesIEEE transactions on industrial electronics (1982. Print), 2022
The mechanism of torque ripple generation by time and space harmonic magnetic fields in permanent magnet synchronous motors is investigated to obtain advanced motor designs.
K. Yamazaki   +2 more
semanticscholar   +1 more source

Performance estimation of interior permanent-magnet brushless motors using the voltage-driven flux-MMF diagram [PDF]

open access: yes, 2006
The flux-magnetomotive force (flux-MMF) diagram, or "energy conversion loop," is a powerful tool for computing the parameters of saturated interior permanent-magnet brushless motors, especially when the assumptions underlying classical dq theory are not ...
Cossar, C.   +3 more
core   +1 more source

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