Results 11 to 20 of about 106,319 (304)

Analysis and Reduction of Detent Effect in Magnetic Lead Screws With Parallel Magnetized Permanent Magnet Segments

open access: yesIEEE Access, 2020
This paper deals with the analysis and suppression of detent effect in the magnetic lead screw (MLS), which is equipped with parallel magnetized permanent magnet (PM) segments to approximate the helical PM for manufacturing simplicity.
Qian Wang, Fang Gao, Juan Zhang, Yong Li
doaj   +1 more source

Application of the DC-ripple reinjection concept to forced-commutated conversion [PDF]

open access: yes2005 International Power Engineering Conference, 2005
A dc-ripple reinjection concept, described in the literature with reference to the line-commutated current source converter, is applied in this paper to the self-commutated current source converter. This is achieved by means of a reinjection converter fed, via a single-phase transformer, from the triple frequency ripple signal.
Liu, Y.   +3 more
openaire   +2 more sources

Tubular modular permanent-magnet machines equipped with quasi-Halbach magnetized magnets - Part II: Armature reaction and design optimization [PDF]

open access: yes, 2005
Using the analytical formulas derived in Part I for predicting the magnetic field distribution, thrust force, and electromotive force of a three-phase tubular modular permanent-magnet machine equipped with quasi-Halbach magnetized magnets, this paper ...
Howe, D., Wang, J.B.
core   +1 more source

Force Ripple Estimation and Compensation of PMLSM With Incremental Extended State Modeling-Based Kalman Filter: A Practical Tuning Method

open access: yesIEEE Access, 2019
This paper focuses on the force ripple estimation and compensation with the Kalman filter for the permanent magnet linear synchronous machine (PMLSM).
Rui Yang   +4 more
doaj   +1 more source

Investigation of New IPM Linear Machine Configuration with Low Permanent Magnet Used [PDF]

open access: yesEngineering and Technology Journal, 2020
Permanent magnet (PM) machines have received numerous attentions, since they are distinguished by many desirable features including simple construction and high efficiency.
Ahlam Shuraiji   +2 more
doaj   +1 more source

System Identification Method Based on a Disturbance Observer Using Symmetric Reference Trajectories in PMLSM-Based Motion Systems

open access: yesIEEE Access, 2020
This study is concerned with the problem of system identification for permanent magnet linear synchronous motor(PMLSM) based motion systems with disturbances such as parametric uncertainty, friction force, and force ripple.
Kwanghyun Cho, Kanghyun Nam
doaj   +1 more source

Comparison of three analytical methods for the precise calculation of cogging torque and torque ripple in axial flux PM machines [PDF]

open access: yes, 2016
A comparison between different analytical and finite-element (FE) tools for the computation of cogging torque and torque ripple in axial flux permanent-magnet synchronous machines is made.
Hannon, Bert   +3 more
core   +3 more sources

Optimal Design of High-Speed Double-Sided Linear Permanent Magnet Motors With Segmented Trapezoidal Magnetic Poles

open access: yesIEEE Access, 2021
For the kilometer-level electromagnetic launch system, a high-speed double-sided linear permanent magnet (PM) linear motor is presented in this paper.
Dunhuang Xu, Dong Wang, Ming Yan
doaj   +1 more source

Improving the torque generation in self-sensing BLDC drives by shaping the current waveform [PDF]

open access: yes, 2016
Brushless DC drives are widely used in different fields of application because of their high efficiency and power density. Torque ripple can be considered one of the drawbacks of these drives.
Darba, Araz   +2 more
core   +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

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