Results 251 to 260 of about 5,737,218 (322)

Reconfigurable Two-Dimensional Air-Gap Barristors

ACS Nano, 2023
Reconfigurable logic circuits implemented by two-dimensional (2D) ambipolar semiconductors provide a prospective solution for the post-Moore era. It is still a challenge for ambipolar nanomaterials to realize reconfigurable polarity control and rectification with a simplified device structure.
Guangqi Zhang, Gaotian Lu, Xuanzhang Li, Zhen Mei, Liang Liang, Shoushan Fan, Qunqing Li, Yang Wei   +7 more
openaire   +3 more sources

A Tutorial on General Air-Gap Field Modulation Theory for Electrical Machines

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021
This tutorial paper presents the mathematics behind the widely observed air-gap field modulation phenomena in electrical machines and derives the duality between electrical machines and switching converters.
M. Cheng, Peng Han, Yi Du, Honghui Wen, Xianglin Li   +4 more
semanticscholar   +1 more source

Analytical Model of Open-Circuit Air-Gap Field Distribution in Interior Permanent Magnet Machines Based on Magnetic Equivalent Circuit Method and Boundary Conditions of Macroscopic Equations

IEEE transactions on magnetics, 2021
To accurately and quickly predict the open-circuit air-gap magnetic field in interior permanent magnet synchronous machines (IPMSMs), an analytical model based on magnetic equivalent circuit (MEC) method is proposed.
Conggan Ma, Jingjing Zhang, Jianfeng Wang, N. Yang, Qinghe Liu, S. Zuo, Xudong Wu, Puwei Wang, Jia-ming Li, Jianguang Fang   +9 more
semanticscholar   +1 more source

Harmonic Analysis of Air Gap Magnetic Field in Flux-Modulation Double-Stator Electrical-Excitation Synchronous Machine

IEEE transactions on industrial electronics (1982. Print), 2020
This article presents a new field-modulation double-stator electrical-excitation synchronous machine (FM-DSEESM) and analyzes its harmonic components of double-layer air gap magnetic field.
Yubin Wang, W. Xu, Xiaodong Zhang, Wenzhong Ma   +3 more
semanticscholar   +1 more source

Torque Production Mechanism of Switched Reluctance Machines With Air-Gap Field Modulation Principle

IEEE transactions on energy conversion, 2020
The torque production mechanism of switched reluctance machines (SRMs) is investigated from the perspective of air-gap field modulation principle. The unipolar stator current excitations can be divided into DC and AC components and they induce the air ...
H. Hua, W. Hua, Guishu Zhao, M. Cheng
semanticscholar   +1 more source

Air-Gap-Insensitive IPT Pad With Ferromagnetic and Conductive Plates

IEEE transactions on power electronics, 2020
A new conductive-plate-integrated inductive power transfer (IPT) system for automated guided vehicles with little output power variation according to air-gap changes between the transmitter (Tx) and receiver (Rx) is proposed. The inductance change of the
Jin S. Choi, Seog Y. Jeong, Byeong G. Choi, S. Ryu, C. Rim, Yun-Su Kim   +5 more
semanticscholar   +1 more source

The Air Gap Sign

Echocardiography, 2014
An elderly female aspirated a donut and subsequently had loss of consciousness and cardiopulmonary arrest. Family members performed chest compressions until emergency medical services arrived and resuscitated the patient with an adequate heart rate and blood pressure.
Edmund Kenneth, Kerut, Curtis, Hannawalt, Charles T, Everson, Navin C, Nanda   +3 more
openaire   +2 more sources

Air-gap heterostructures

Applied Physics Letters, 2011
We demonstrate the fabrication of thin GaAs layers which quasi hover above the underlying GaAs substrate. The hovering layers have a perfect epitaxial relationship to the substrate crystal lattice and are connected to the substrate surface only by lattice matched nanopillars of low density.
Ch. Heyn, M. Schmidt, S. Schwaiger, A. Stemmann, S. Mendach, W. Hansen   +5 more
openaire   +1 more source

Analysis of Radial Vibration Caused by Magnetic Force and Torque Pulsation in Interior Permanent Magnet Synchronous Motors Considering Air-Gap Deformations

IEEE transactions on industrial electronics (1982. Print), 2019
This paper mainly studies the influences of air-gap deformations on the electromagnetic performances and radial vibration characteristics of an interior permanent magnet synchronous motor (IPMSM) at peak rotating speed with rated power.
F. Chai, Yi Li, Y. Pei, Yanjun Yu
semanticscholar   +1 more source

Analysis of Back-EMF in Flux-Reversal Permanent Magnet Machines by Air Gap Field Modulation Theory

IEEE transactions on industrial electronics (1982. Print), 2019
In this paper, the back-electromotive force (back-EMF) characteristics of the flux-reversal permanent magnet (FRPM) machines with different magnetization methods and winding layouts are analyzed and synthesized based on the magneto motive force (MMF ...
Xiaofeng Zhu, W. Hua, Wei Wang, Wen‐Long Huang   +3 more
semanticscholar   +1 more source