Results 181 to 190 of about 12,193 (210)

Hybrid Inverters With Dual Switching Frequencies for Switched Reluctance Motors

open access: yesEnergy Science &Engineering, EarlyView.
A hybrid dual‐switching‐frequency inverter for SRMs is proposed, combining SiC and IGBT devices based on rotor inductance. The method enables accurate current tracking with simple hysteresis control, significantly reducing torque ripple, vibration, and acoustic noise while cutting inverter cost compared to full‐SiC solutions.
Fares S. El‐Faouri   +4 more
wiley   +1 more source

Turbulence‐Intensity Effects on the Aerodynamic Performance of an H‐Type Darrieus Wind Turbine: A URANS Parametric Study

open access: yesEnergy Science &Engineering, EarlyView.
Turbulence intensity from 1% to 25% was parametrically tested on a three‐bladed H‐type Darrieus rotor across five tip speed ratios (TSRs) using two‐dimensional URANS. The optimal TSR proved the most efficient and most robust operating point simultaneously, with Cp losses capped at 5.8% even at TI = 25%. ABSTRACT The effect of inlet turbulence intensity
Aydin Ulus
wiley   +1 more source

Turn-on luminescence from molecular rotor realignment in metal-organic framework thin films. [PDF]

open access: yesNat Commun
Fischer JC   +13 more
europepmc   +1 more source

Molecular Rotors as Reactivity Probes: Predicting Electrophilicity from the Speed of Rotation. [PDF]

open access: yesAngew Chem Int Ed Engl
Liu H   +7 more
europepmc   +1 more source

Dynamic twisting and imaging of moiré crystals. [PDF]

open access: yesSci Adv
Zhang Q   +13 more
europepmc   +1 more source

Efficiency of aluminium refining on a foundry degassing unit depending on the rotor geometry and the degree of its wear. [PDF]

open access: yesSci Rep
Kolínský J   +7 more
europepmc   +1 more source

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