Results 11 to 20 of about 5,212 (262)
Energies, 2023 When a magnetic bearing is used in the design of a high-speed motor, no friction and wear occur because of the principle of magnetic levitation; however, the size of the entire system increases.
In-Jun Yang +4 more
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Comparing the force ripple during asynchronous and conventional stimulation [PDF]
Muscle & Nerve, 2014 ABSTRACTIntroduction: Asynchronous stimulation has been shown to reduce fatigue during electrical stimulation; however, it may also exhibit a force ripple. We quantified the ripple during asynchronous and conventional single‐channel transcutaneous stimulation across a range of stimulation frequencies.
Ryan J, Downey +3 more
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Energies, 2017 Linear flux-switching permanent magnetic (LFSPM) machines are good choices for long stroke applications. These machines deliver high thrust force density in addition to the machine structure where permanent magnetics (PMs) and windings are all on the ...
Wenjuan Hao, Yu Wang
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Force and Velocity Ripple Reduction of the New Linear Motor [PDF]
IEEE Access, 2021 This study presents a new linear motor with an E-core stator and a homopolar permanent magnet (PM) mover. The velocity and force ripples of the motor are effectively reduced by an optimized structure and effective force compensation. Firstly, the mechanical structure, magnetic paths and operation principles are introduced. Force analysis is carried out
Meiling Tang +3 more
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Application of the DC-ripple reinjection concept to forced-commutated conversion [PDF]
2005 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
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Analysis of Electromagnetic Force Ripple in a Bearingless Synchronous Reluctance Motor [PDF]
IEEE Transactions on Magnetics, 2021 A bearingless machine should be designed to maximize the average and to minimize the ripple in the electromagnetic torque and levitating force. In a bearingless synchronous reluctance machine (BSynRM), the complex rotor design and the levitation winding create a rich spatial and temporal spectrum of the magnetic flux density in the airgap, which ...
Rasilo, Paavo +4 more
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IEEE 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
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IEEE 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
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IET Electric Power Applications, 2021 Asymmetrical rotor topologies were previously proposed for synchronous reluctance motors (SynRM) to reduce the torque ripple. However, potential negative effect of these topologies on mechanical vibration, which is often serious in SynRM, was hardly ...
Yingqian Lin +4 more
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Shock and Vibration, 2020 A novel electromagnetic actuator for active suspension is designed on an in-wheel motor electric vehicle in this paper. Aiming at reducing thrust ripple force and improving stability of the actuator, a method of calculating the optimum slot width and ...
Kou Farong +3 more
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