Results 71 to 80 of about 2,164,521 (333)

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

Frontiers 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, Xianjun Zeng, Bingquan Tao, Bingquan Tao, Xiuqian Sun, Xiuqian Sun, Jianwei Ma, Jianwei Ma   +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

Energies, 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, Yashuang Yan, Bin Li, Xiangdong Liu, Zhen Chen   +4 more
doaj   +1 more source

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

Actuators, 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, Bo-Wei Lin, Hsiang-Yueh Lai, Guan-You Chen   +3 more
doaj   +1 more source

The use of cement leftovers from the hollow of spun piles as an additive in self-compacting concrete [PDF]

, 2018
Spun piles have been used widely by developing countries, including Malaysia, to construct the foundation of most construction projects. A spun pile is a reinforced precast and prestressed concrete that is compacted in a mould through spinning compaction.
Adnan, Suraya Hani, Adnan, Suzana Wati, Jamellodin, Zalipah, Osman, Mohamad Hairi, Zakaria, Muhammad Shukri   +4 more
core   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

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, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Slot/pole Combinations Choice for Concentrated Multiphase Machines dedicated to Mild-Hybrid Applications [PDF]

, 2011
Version de l'éditeur à l'adresse suivante : http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6119910&isnumber=6119266This paper presents multiphase permanent magnet machines with concentrated non-overlapped winding as a good candidate for ...
ASLAN, Bassel, KORECKI, Julien, LEGRANGER, Jerome, SEMAIL, Eric   +3 more
core   +4 more sources

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, Alejandro Orellana‐Silla, Marta Galbiati, Efrén Navarro‐Moratalla, Luca Braglia, Sara Stolfi, José Antonio Real, Víctor Rubio‐Giménez, Sergio Tatay, Carlos Martí‐Gastaldo   +9 more
wiley   +1 more source

Engineering Fluoroacetate Dehalogenase by Growth‐Based Selections on Non‐Natural Organofluorides

Angewandte Chemie, EarlyView.
We present a high‐throughput selection system to engineer fluoroacetate dehalogenases (FAcDs). By challenging E. coli populations that produce diverse FAcD libraries to grow on non‐natural organofluorides as their sole carbon source, we isolated a panel of FAcD variants with improved activity and altered substrate specificity.
Suzanne C. Jansen, Pauline van Beers, Clemens Mayer   +2 more
wiley   +2 more sources

Torque Ripple Reduction of a Novel Modular Arc-Linear Flux-Switching Permanent-Magnet Motor with Rotor Step Skewing

Energies, 2016
A novel modular arc-linear flux-switching permanent-magnet motor (MAL-FSPM) used for scanning system instead of reduction gearboxes and kinematic mechanisms is proposed and researched in this paper by the finite element method (FEM).
Xiangdong Liu, Zhongxin Gu, Jing Zhao
doaj   +1 more source

Five-Axis Machine Tool Condition Monitoring Using dSPACE Real-Time System [PDF]

, 2012
This paper presents the design, development and SIMULINK implementation of the lumped parameter model of C-axis drive from GEISS five-axis CNC machine tool.
Fletcher, Simon, Longstaff, Andrew P., Myers, Alan, Pislaru, Crinela, Sztendel, S.   +4 more
core   +1 more source