Results 81 to 90 of about 1,395,536 (296)

New method for experimental modal analysis of hydrogenerator's stator core using the excitation from the Poles

The Journal of Engineering, 2019
The study of stator core vibrations generated by electromagnetic forces in electrical machines is of great practical and theoretical interest. An important part of the problem is the correct determination of mode shapes and eigen frequencies of the ...
Allan de Barros, Alexandre D'Agostini, Thierre Zulzke Penteado, Norio Kato, André Alves Cunha, Egidio José Faria, Carlos Haluska, Fernando Hiroyuki Hamaji, Silvio Ikuyo Nabeta, Ivan Eduardo Chabu   +9 more
doaj   +1 more source

Why Is the Mechanism Underlying the Chiral‐Induced Selectivity Effect Still Challenging?

Advanced Materials, EarlyView.
The chiral‐induced spin selectivity (CISS) effect is observed in many experimental configurations and for different materials. However, there are theoretical challenges in attempting to explain those results. A qualitative framework for explaining all the results is presented.
Ron Naaman, Yossi Paltiel
wiley   +1 more source

Fast calculation of the multi-speed vibration characteristics of PMSMs considering tangential force and modal participation factor

Journal of Low Frequency Noise, Vibration and Active Control
This paper addresses the multi-physical field coupling problem of electromagnetic vibration in permanent magnet synchronous motors (PMSMs), and presents a fast calculation method for multi-harmonic decoupling of electromagnetic forces based on subdomain ...
Dawei Gu, Dashuai Shi, Jingming Wan, Lisheng Zheng, Zhuo Xu, Zhengqing Liu, Baisong Pan, Dapeng Tan, Bangchun Wen   +8 more
doaj   +1 more source

Research on a novel drive unit of fast mechanical switch with modular double capacitors

The Journal of Engineering, 2019
The fast mechanical switch is one of the key devices for high-voltage direct-current circuit breakers (DCCB), and the mechanical contacts separation time determines the operating time of hybrid mechanical circuit breakers.
Yannan Zhou, Yulong Huang, Weijie Wen, Jingwei Lu, Tiehan Cheng, Shutong Gao   +5 more
doaj   +1 more source

Pulsed Laser‐Assisted Phase Engineering of Multimetallic Colloidal Nanocrystals With Complex Compositions

Advanced Materials, EarlyView.
The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela, Sergio Triviño‐Sánchez, Andrés Guerrero‐Martínez, Luis M. Liz‐Marzán, Guillermo González‐Rubio   +4 more
wiley   +1 more source

A Novel Design Concept of Electromagnetic Valve Actuator with High Starting Force

Energies, 2019
In this study, a novel design concept of magnet-less, high response time electromagnetic valve actuator with high starting force for independent valve actuation control of internal combustion engines is proposed. The new actuator geometry design is based
Tomaž Munih, Damijan Miljavec, Selma Čorović   +2 more
doaj   +1 more source

Generating Unconventional Spin‐Orbit Torques With Patterned Phase Gradients in Tungsten Thin Films

Advanced Materials, EarlyView.
ABSTRACT A key aim in spintronics is to achieve current‐induced magnetization switching via spin‐orbit torques without external magnetic fields. For this, the focus of recent work has been on introducing controlled lateral gradients across ferromagnet/heavy‐metal devices, giving variations in thickness, composition, or interface quality.
Lauren J. Riddiford, Anne Flechsig, Shilei Ding, Emir Karadža, Niklas Kercher, Tobias Goldenberger, Elisabeth Müller, Pietro Gambardella, Laura J. Heyderman, Aleš Hrabec   +9 more
wiley   +1 more source

The occurrence and mechanism of hysteresis between axial deformation and short‐circuit electromagnetic force during the vibration of power transformer windings

IET Electric Power Applications
Mechanical stability is one of the core capabilities of power transformers. External short‐circuit accidents are the main cause of winding instability. International Electrotechnical Commission 60076‐5 standard recommends a method to calculate the short ...
Mingkai Jin, Weijie Xu, Weijiang Chen, Qiaogen Zhang, Yi Zhao, Tao Wen   +5 more
doaj   +1 more source

Electromagnetic Forces and Torques: From Dielectrophoresis to Optical Tweezers. [PDF]

Chem Rev, 2023
Riccardi M, Martin OJF.
europepmc   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source