Results 21 to 30 of about 77,420 (311)

A sensorless initial rotor position's estimation for permanent magnet synchronous machines [PDF]

open access: yes, 2015
Permanent magnet synchronous motors for the effective start require information about the initial position of a rotor. In this regard, most systems use position sensors, which substantially increase entirely a cost of an electrical drive [1-3].
Koltun, V.   +3 more
core   +2 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

Estimation of Saturation of Permanent-Magnet Synchronous Motors Through an Energy-Based Model [PDF]

open access: yes, 2011
We propose a parametric model of the saturated Permanent-Magnet Synchronous Motor (PMSM) together with an estimation method of the magnetic parameters. The model is based on an energy function which simply encompasses the saturation effects. Injection of
Jebai, AlKassem   +3 more
core   +2 more sources

Application of Taguchi Method in Structure Optimization of Permanent Magnet Synchronous Motor

open access: yesJournal of Harbin University of Science and Technology, 2019
Aiming at the issue of the traditional local optimization method of permanent magnet motor can not achieve multiobjective optimization, an optimization method based on Taguchi method is proposed.
WEN Jia-bin, YU Lan
doaj   +1 more source

Improved analytical model for predicting the magnetic field distribution in brushless permanent-magnet machines [PDF]

open access: yes, 2002
A general analytical technique predicts the magnetic field distribution in brushless permanent magnet machines equipped with surface-mounted magnets. It accounts for the effects of both the magnets and the stator windings.
Chan, C.C., Howe, D., Zhu, Z.Q.
core   +2 more sources

Investigation of an Inset Micro Permanent Magnet Synchronous Motor Using Soft Magnetic Composite Material

open access: yesEnergies, 2020
This paper presents the world’s smallest inset permanent magnet synchronous motor (PMSM) with a soft magnetic composite (SMC) core, providing ease of manufacturing for micromachine applications without silicon steel laminations. The inset motor can offer
Da-Chen Pang   +4 more
doaj   +1 more source

Unified Direct-Flux Vector Control for AC Motor Drives [PDF]

open access: yes, 2010
The paper introduces a Unified Direct-Flux Vector Control scheme suitable for sinusoidal AC motor drives. The AC drives considered here are Induction Motor, Synchronous Reluctance and synchronous Permanent Magnet motor drives, including Interior and ...
Bojoi, R.   +2 more
core   +1 more source

Prediction of the electromagnetic torque in synchronous machines through Maxwell stress harmonic filter (HFT) method [PDF]

open access: yes, 2006
For the calculation of torque in synchronous motors a local method is analysed, based on the Maxwell stress theory and the filtered contributions due to the harmonics of the magnetic vector potential in the motor air-gap.
Popescu, M.
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  

Research on traction motor heat dissipation of high-power permanent magnet direct drive electric locomotive

open access: yes机车电传动, 2022
The design of the direct drive transmission structure and the motor air path structure of the traction motor of the high-power permanent magnet direct drive electric locomotive was introduced.
SONG Andong, ZHANG Jiafeng, GAO Shenglan
doaj  

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