Results 71 to 80 of about 51,226 (308)

Effect of optimal torque control on rotor loss of fault-tolerant permanent-magnet brushless machines [PDF]

, 2002
A faulted phase in a fault-tolerant permanent-magnet brushless machine can result in significant torque ripple. However, this can be minimized by using an appropriate optimal torque control strategy.
Atallah, K., Ede, J.A., Howe, D., Wang, J.B.   +3 more
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Analytical Model to Calculate Radial Forces in Permanent-Magnet Synchronous Machines

Applied Sciences, 2021
There are three principal sources of noise and vibration in electrical machines: electromagnetic sources, mechanical sources, and aerodynamic sources. Nowadays, one of the major advantages of permanent-magnet synchronous machines is their torque density.
Iratxo Gómez, Gustavo García, Alex McCloskey, Gaizka Almandoz   +3 more
doaj   +1 more source

A quantitative comparison between BLDC, PMSM, brushed DC and stepping motor technologies [PDF]

, 2016
Brushless DC machines (BLDC), Permanent Magnet Synchronous Machines (PMSM), Stepping Motors and Brushed DC machines (BDC) usage is ubiquitous in the power range below 1,5kW. There is a lot of common knowledge on these technologies.
De Viaene, Jasper, Derammelaere, Stijn, Haemers, Michiel, Stockman, Kurt, Verbelen, Florian   +4 more
core   +2 more sources

Analytical method for magnetic field calculation in a low-speed permanent-magnet harmonic machine [PDF]

, 2011
Magnetic-gearing effect has become increasingly attractive when designing direct-drive low-speed permanent-magnet machines. The machines derived from the magnetic-gearing effect can be termed as harmonic machines.
Chau, KT, Chan, CC, Xu, G, Mi, CC, Jian, L   +4 more
core   +1 more source

Review of Variable-flux Permanent Magnet Machines [PDF]

Journal of international Conference on Electrical Machines and Systems, 2011
Variable-flux permanent-magnet machines (VFPM) are of great interest and many different machine topologies have been documented. This paper categorizes VFPM machine topologies with regard to the method of flux variation and further, in the case of hybrid excited machines with field coils, with regard to the location of the excitation sources.
Richard Owen, Z. Q. Zhu, J. B. Wang, D. A. Stone, I. Urquhart   +4 more
openaire   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

Advanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz, Jonas De Breuck, Sahar Salehi, Meike N. Leiske   +3 more
wiley   +1 more source

Comparison of Two Cogging Torque Reducing Methods of 6-Poles Single Phase SMPM [PDF]

Journal of Intelligent Procedures in Electrical Technology, 2013
Surface permanent magnet structure of pm machines is widely used in these types of machines. In the slotted machines, low armature reaction and high overload capability features can be achieved by selecting surface permanent magnets.
Amir Hossein Tavakol Zadeh, Javad Faiz, Ghazanfar Shahgholian   +2 more
doaj  

Investigation of multi-phase tubular permanent magnet linear generator for wave energy converters [PDF]

, 2014
In this article, an investigation into different magnetization topologies for a long stator tubular permanent magnet linear generator is performed through a comparison based on the cogging force disturbance, the power output, and the cost of the raw ...
A. F. Zobaa, Bascetta L., Faiz J., Gargov N., I. Pisica, Manana M., McDonald A. S., N. P. Gargov, Ran L., Shabani M. A., Tavana H. M., Xiuke Y.   +11 more
core   +1 more source

Slight Truncation Changes in Iron Oxide Nanocubes Strongly Affect Their Magnetic Properties

Advanced Functional Materials, EarlyView.
Subtle variations in nanoparticle morphology can lead to significant changes in functional properties. An automated shape‐fitting method captures minor differences in corner truncation between iron oxide nanocubes of similar sizes synthesized under identical conditions, revealing pronounced disparities in their magnetic and hyperthermia behavior ...
Kingsley Poon, Raúl López‐Martín, Verner Håkonsen, Nader Yaacoub, Francisco J. Terán, Alberto López Ortega, Jose A. De Toro, Gurvinder Singh   +7 more
wiley   +1 more source