Results 51 to 60 of about 17,191 (210)

Electromotive forces and the Meissner effect puzzle [PDF]

, 2009
In a voltaic cell, positive (negative) ions flow from the low (high) potential electrode to the high (low) potential electrode, driven by an `electromotive force' which points in opposite direction and overcomes the electric force.
A.F. Santander-Syro, A.V. Nikulov, A.V. Nikulov, B. Kyung, D.N. Basov, E.H. Lieb, H. London, H.J.A. Molegraaf, I.K. Kikoin, J. E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, J.E. Hirsch, M. Ogata, M.R. Norman, P. Wrobel, R. Doll, R. Haslinger, R.H. Pry, S. Feng, T. Eckl, T.A. Maier, V.J. Emery, Z.C. Gu   +33 more
core   +3 more sources

Modeling and Power Regulation Strategy of Variable‐Speed Pumped Storage Unit With Full‐Size Converter in Pump Mode

Energy Science &Engineering, EarlyView.
A numerical model of variable‐speed pumped storage unit (VSPSU) with full‐size converter (FSC) under fast speed control strategy is established. Additionally, the correctness of the model was validated by comparing with SIMSEN simulation results and text prototype data from NARI.
Weijia Yang, Peilin Wu, Zixuan Shao, Yiwen Liao, Yufei Teng, Huabo Shi   +5 more
wiley   +1 more source

A Hybrid EV Charging Architecture Integrating DC Fast Charging and Wireless Power Transfer

Energy Science &Engineering, EarlyView.
A hybrid EV charging architecture combining DC fast charging and wireless power transfer is proposed. The system achieves high efficiency, grid compliance, and reliable bidirectional operation, offering a scalable solution that enhances user convenience while paving the way for smarter, future‐ready EV charging infrastructure.
Ali Almaktoof, Mohamad Taha, Marco Adonis, Kareem Halablab   +3 more
wiley   +1 more source

Study on the process of preparing Al-Ce alloy by electrodeposition

Metalurgija, 2019
The process of Al-Ce alloy prepared by electrodeposition was studied in molten LiF-KCl-CeF3 salt at 820 °C. Several process parameters such as back electromotive force and current efficiency were measured by continuous pulse oscillograph.
J. D. Li, H. Ren, Z. Gong, K. Wang, Y. Y. Wang, J. L. Lu, J. Li   +6 more
doaj  

Nonlinear Turbulent Magnetic Diffusion and Mean-Field Dynamo

, 2002
The nonlinear coefficients defining the mean electromotive force (i.e., the nonlinear turbulent magnetic diffusion, the nonlinear effective velocity, the nonlinear kappa-tensor, etc.) are calculated for an anisotropic turbulence.
A. Brandenburg, A. Brandenburg, A. Brandenburg, A. Gruzinov, A. Gruzinov, A. Pouquet, A. Ruzmaikin, A. S. Monin, D. Moss, E. Parker, E. T. Vishniac, F. Krause, G. B. Field, G. Glatzmaier, G. Rüdiger, H. K. Moffatt, I. Rogachevskii, I. Rogachevskii, I. Rogachevskii, Igor Rogachevskii, K.-H. Rädler, K.-H. Rädler, L. L. Kichatinov, L. L. Kichatinov, M. Stix, N. Kleeorin, N. Kleeorin, N. Kleeorin, N. Kleeorin, N. Kleeorin, N. Kleeorin, N. Kleeorin, N. Kleeorin, N. Kleeorin, Nathan Kleeorin, P. H. Roberts, R. Beck, R. Kulsrud, R. M. Kulsrud, S. A. Orszag, S. I. Vainshtein, S. I. Vainshtein, V. Urpin, W. D. McComb   +43 more
core   +1 more source

The Dependence of Dynamo $\alpha$-Effect on Reynolds Numbers, Magnetic Prandtl Number, and the Statistics of MHD Turbulence [PDF]

, 2001
We generalize the derivation of dynamo coefficient $\alpha$ of Field et al (1999) to include the following two aspects: first, the de-correlation times of velocity field and magnetic field are different; second, the magnetic Prandtl number can be ...
Gruzinov A., Hongsong Chou, Piddington J. H., Piddington J. H., Piddington J. H., Piddington J. H., Piddington J. H., Roberts P. H., Zeldovich Ya. B.   +8 more
core   +2 more sources

A Comprehensive Multistage Average Controller for Trajectory Tracking in Solar‐Powered Mobile Robots: Analysis of Actuator‐Driver and Power Stage Integration

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This work addresses the challenge of bidirectional trajectory tracking in solar‐powered wheeled mobile robots (WMRs), considering the mechanical structure, actuator‐driver, and power stage subsystems. Notably, this is the first study to explicitly model and control the actuator‐driver subsystem within this context. The proposed solution relies
Benjamin Natanael Santiago‐Nogales, Julio Cesar Ordaz‐Dehesa, Ramón Silva‐Ortigoza, Erik Reyes‐Reyes, J. Martín Alba‐Martínez, Juan Eduardo Velázquez‐Velázquez, José Rafael García‐Sánchez, Magdalena Marciano‐Melchor, Hind Taud   +8 more
wiley   +1 more source

Influence of Winding Configurations and Stator/Rotor Pole Combinations on Field Back-EMF Ripple in Switched Flux Hybrid Excited Machines

Energies
Similar to armature back electromotive force (armature back-EMF), the back-EMF also exists in the field winding of hybrid excited machines. However, the existence of field back electromotive force (field back-EMF) is harmful to the safe and stable ...
Zhiyu Yang, Xiaoyong Sun, Ruizhao Han, Ruyu Shang, Zhen Chen, Xiangdong Liu   +5 more
doaj   +1 more source

Multi physics field simulation analysis of different pole slots combined with automotive permanent magnet motors [PDF]

Journal of Hebei University of Science and Technology
Aiming at the problems in the design of permanent magnet synchronous motor for vehicles, taking the 8-pole 48-slot and 8-pole 36-slot interior permanent synchronous motors as subject, the influence of different pole-slot combinations on the ...
Guohao LI, Hongbin YIN, Yigang SUN, Zhe ZHANG, Xiangjun BI, Wenjing HU   +5 more
doaj   +1 more source

FPGA-based implementation of the back-EMF symmetric-threshold-tracking sensorless commutation method for brushless DC-machines [PDF]

, 2013
The operation of brushless DC permanent-magnet machines requires information of the rotor position to steer the semiconductor switches of the power-supply module which is commonly referred to as Brushless Commutation. Different sensorless techniques have
Darba, Araz, De Belie, Frederik, Melkebeek, Jan, Salem Mohamed Salem, Aboubakr   +3 more
core   +1 more source