Results 41 to 50 of about 1,052 (283)

Design to Reduce Cogging Torque and Irreversible Demagnetization in Traction Hybrid Motor Using Dy-free Magnet

open access: yesMachines, 2023
The PMSM (Permanent Magnet Synchronous Motor) is being studied a lot in traction motors for high efficiency and high performance. Usually, magnets containing rare earth elements are used.
Si-Woo Song   +3 more
doaj   +1 more source

Nanoscale Spatial Organization of ARC High‐ and Low‐Order Assemblies at Excitatory Synapses

open access: yesAdvanced Science, EarlyView.
ARC (Activity‐Regulated Cytoskeleton‐Associated protein) mediates synaptic plasticity by forming nanoscale assemblies in neurons. Using super‐resolution microscopy and time‐resolved anisotropy with targeted tagging, the study reveals low‐order ARC assemblies at synapses colocalizing with AMPARs, semi‐circular structures at endocytic zones, and 60–80 nm
Martina Damenti   +13 more
wiley   +1 more source

Reduction of cogging torque and electromagnetic vibration based on different combination of pole arc coefficient for interior permanent magnet synchronous machine

open access: yesCES Transactions on Electrical Machines and Systems, 2021
Cogging torque and electromagnetic vibration are two important factors for evaluating permanent magnet synchronous machine (PMSM) and are key issues that must be considered and resolved in the design and manufacture of high-performance PMSM for electric ...
Feng Liu   +4 more
doaj   +1 more source

Food inflation pass‐through from agricultural imports in a small open economy

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract This paper develops a new framework for quantifying cost pass‐through in a small open economy by estimating firm‐level markup responses to agricultural import price shocks. We show theoretically that markup adjustments depend on firms' reliance on imported inputs and demand curvature, generating heterogeneous inflationary effects across firm ...
Minseong Kang, Seungki Lee
wiley   +1 more source

Cogging torque and torque ripple analysis of permanent magnet flux-switching machine having two stators [PDF]

open access: yesArchives of Electrical Engineering, 2019
The analysis of cogging torque, torque ripple and total harmonic distortion of a permanent magnet (PM) flux-switching machine having separate excitation stators is presented in this study.
Chukwuemeka Chijioke Awah   +2 more
doaj   +1 more source

Optimization and analysis of permanent magnet assisted reluctance generator with interior rare - Earth - Less combined magnetic poles for extended range electric vehicles

open access: yesFrontiers in Mechanical Engineering
To address the issues of large cogging torque and poor sinusoidal waveform of induced electromotive force in traditional pure rare earth permanent magnet generators for extended-range electric vehicles, a novel permanent magnet-assisted reluctance ...
Xianjun Zeng   +7 more
doaj   +1 more source

Influence of Different Rotor Teeth Shapes on the Performance of Flux Switching Permanent Magnet Machines Used for Electric Vehicles

open access: yesEnergies, 2014
This paper investigated a 12-slot/11-pole flux switching permanent magnet (FSPM) machine used for electric vehicles (EVs). Five novel rotor teeth shapes are proposed and researched to reduce the cogging torque and torque ripple of the FSPM machine. These
Jing Zhao   +4 more
doaj   +1 more source

‘…It was my choice to see how I can acquire this Western world education… and I'm happy…’: Structuration and the dialectic nature of being a Nigerian university student in the UK

open access: yesBritish Educational Research Journal, EarlyView.
Abstract This paper examines the experiences of Nigerian cross‐border students in UK higher education, focusing on how colonial legacies continue to shape the interplay between structure and agency. Three key themes emerged in the analysis of the data: First, the persistence of a ‘West is Best’ mentality reflects the internalisation of colonial ...
Jennifer Marshall, Jack Bryne Stothard
wiley   +1 more source

FPGA-Based Hybrid Stepper Motor Drive System Design by Variable Structure Control

open access: yesActuators, 2021
A stepper motor is usually operated in position open-loop control for simplicity. However, in order to improve the transient and steady-state performances of the stepper motor-based drive system, a high performance stepper motor drive system is usually ...
Chiu-Keng Lai   +3 more
doaj   +1 more source

Does Managerial Ability Improve Environmental Performance and Overall ESG Ratings? The Impact of the European Sustainability Reporting Mandate

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study examines the role of managerial ability in driving environmental performance and overall environmental, social, and governance (ESG) ratings in the context of the European Union sustainability reporting regulations. Using a sample of 7242 firm‐year observations over the period 2015–2023, our results indicate a structural change in ...
Mihaela Ionașcu   +2 more
wiley   +1 more source

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