Results 31 to 40 of about 1,052 (283)
Constrained Multi-Objective Optimization for Double-Sided Tubular Machine With Hybrid Segmented PM
IEEE Access, 2023 Double-sided tubular machines (DSTM) have greatly improved space utilization and power density, and are widely used in tidal power generation and high-power electric drives, while the thrust force ripple is also significant.
Liang Guo, Minjie Lei, Mian Weng
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Al-Khawarizmi Engineering Journal, 2019 Linear motor offers several features in many applications that require linear motion. Nevertheless, the presence of cogging force can deteriorate the thrust of a permanent magnet linear motor.
Jamal Abdul-Kareem Mohammed +2 more
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Force and Velocity Ripple Reduction of the New Linear Motor
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.
Meiling Tang +3 more
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An Observer-based design for cogging forces cancellation in permanent magnet linear motors [PDF]
Proceedings of the 48h IEEE Conference on Decision and Control (CDC) held jointly with 2009 28th Chinese Control Conference, 2009 This paper adresses the high precision positioning issue of permanent magnet (PM) linear motors, in presence of spatially periodic forces, also known as cogging. Using an internal model representation of this perturbation, an observerbased controller only relying on position measurements is derived.
Jeremy Malaize, Jean Lévine
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IEEE Access, 2019 The bearingless permanent magnet synchronous motor (BPMSM) is widely developed due to the advantages such as high speed, high power factor, high power density, and zero friction.
Yueping Sun, Bokai Su, Xiaodong Sun
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Advanced Materials, EarlyView.Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje +7 more
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Energies, 2020 This paper presents a novel integrated permanent magnet (PM) in-wheel motor (IWM) driving system for electric vehicles (EVs), in order to overcome the disadvantages of electromagnetic vibration and cogging torque in the topology scheme, on the basis of ...
Qiang Wang +4 more
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Influence of cogging force on solar thermo acoustic generation systems
The Journal of Engineering, 2017 Here, the model of a solar thermoacoustic generation (STAG) system is presented, and the influences of cogging force on the resonance of STAG system are investigated by simulation. The samples of cogging force are taken from three typical linear alternator designs, and their consequent influences on STAG system are described.
Wang Ding +4 more
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Solvent‐Free Thermal Defect Engineering in Molecular Frameworks With Volatile Linkers
Advanced Materials, EarlyView.Thermal removal of neutral volatile linkers enables precise and solvent‐free generation of metal vacancies in MOFs. This strategy affords redox‐stable, coordinatively unsaturated FeII sites with tunable spin, ligand coordination, and catalytic behavior. The approach offers a general route to design defect‐functional materials through local coordination
Sonia Martínez‐Giménez +9 more
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A Study on the Design Method of Spoke-Type PMSMs for Reducing Cogging Torque and Axial Force
EnergiesIn spoke-type permanent magnet synchronous motors (PMSMs), an asymmetric rib structure has been investigated as a method to reduce cogging torque. However, such rotor asymmetry tends to an increase in the axial force, which limits its applicability in ...
Min-Jae Jeong +4 more
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