Results 51 to 60 of about 91,631 (302)
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
doaj +1 more source
IEEE Access, 2019 In order to approximately obtain sinusoidal air-gap magnetic field and get larger radial levitation force of the bearingless permanent magnet synchronous motor (BPMSM), a novel BPMSM with Halbach magnetized rotor is proposed.
Tao Zhang +3 more
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Radial evolution of cross helicity in high-latitude solar wind
, 2005 We employ a turbulence transport theory to explain the high-latitude radial evolution of cross helicity, or Alfvénicity, observed by the Ulysses spacecraft.
Matthaeus, William H. +6 more
core +1 more source
Analysis of Unsteady Pressure Fluctuation in a Semi-Open Cutting Pump
Energies, 2020 In order to understand the pressure fluctuation characteristics of a semi-open cutting pump, the three-dimensional unsteady flow fields were calculated. External and internal flow characteristics of four schemes with different relative angles between the
Weidong Cao, Jiayu Mao, Wei Li
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Numerical Simulation Research on Radial Force of Centrifugal Pump with Guide Vanes
Shock and Vibration, 2021 To reveal the internal unsteady flow state of the guide vane centrifugal pump, in this paper, the standard SST k‐ω turbulent flow model is used for unsteady numerical simulation of the centrifugal pump.
Dongrong Meng +3 more
doaj +1 more source
Influence of Different Pole Head Shapes on Motor Performance in Switched Reluctance Motors
Advances in Electrical and Computer Engineering, 2020 The main reasons of the vibrations occurring in the stator of Switched Reluctance Motors (SRM) are the radial forces and they cause acoustic noise. This has an adverse effect on the performance of SRM.
POLAT, M., YILDIZ, A.
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Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
Refinement of Analytical Current Waveform for Acoustic Noise Reduction in Switched Reluctance Motor
IEEE Open Journal of Industry ApplicationsIn this article, a refinement algorithm of the current waveform that flattens the radial-force sum in switched reluctance motors is proposed. Flattening the radial-force sum eliminates the multiples of the third radial-force component.
Fares S. El-Faouri +2 more
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Vibration analysis of a permanent magnet synchronous motor by a pole/slot combination
AIP Advances, 2023 A sixteen-pole eighteen-slot (16p/18s) permanent magnet synchronous motor (PMSM) developed in Korea Electrotechnology Research Institute (KERI) for a vertical articulated robot is chosen as a reference model, and other two pole/slot combinations (20p/18s,
Gyeonghwan Yun +5 more
doaj +1 more source
FEBS Letters, EarlyView.Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure +3 more
wiley +1 more source