Results 51 to 60 of about 4,567 (231)

A Nonstationary Geometry‐Based Model for Channel Characterisation in Vactrains Scenarios Using Leaky Coaxial Cables

open access: yesIET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
In this paper, a 3D multi‐source GBSM model is proposed for the vacuum tube scenario using LCX. By equating the periodic slots to multiple magnetic dipole antennas, the electric field distribution of LCX is deduced, and the CIR expression is derived. Based on this, the multi‐link spatial‐temporal correlations, including the spatial CCF and temporal ACF,
Kai Wang   +4 more
wiley   +1 more source

Dynamic stability experiment of Maglev systems [PDF]

open access: yes, 1995
This report summarizes the research performed on Maglev vehicle dynamic stability at Argonne National Laboratory during the past few years. It also documents magnetic-force data obtained from both measurements and calculations.
Cai, Y., Chen, S. S., Mulcahy, T. M.
core   +3 more sources

Standardised Evaluation of Shanghai-Hangzhou High-Speed Maglev Project

open access: yesPromet (Zagreb), 2019
In recent years, high-speed maglev systems have received renewed attention once again. However, a systematic and transparent approach to evaluate high-speed maglev projects does not currently exist, which could be an obstacle for their application, even ...
Yong Cui   +3 more
doaj   +1 more source

Computational efficient model predictive current control for interior permanent magnet synchronous motor drives

open access: yesIET Power Electronics, 2022
The standard model predictive control (MPC) of three‐phase motors requires heavy calculation efforts for evaluating all voltage vectors (VV) in addition to the variable switching frequency, large current harmonics, and torque ripples.
Mannan Hassan   +5 more
doaj   +1 more source

Study on Interior Aerodynamic Noise Characteristics of the High-Speed Maglev Train in the Low Vacuum Tube

open access: yesApplied Sciences, 2022
As the next-generation high-speed transportation system, the low vacuum tube high-speed maglev system combines the tube with a certain degree of vacuum with the high-speed maglev train, which can realize high-speed operation under low aerodynamic ...
Jiali Liu   +3 more
doaj   +1 more source

A Multi‐Objective Optimal Synchronous Modulation Strategy for Three‐Level Converter Through Switching Angle Regulation

open access: yesIET Power Electronics, Volume 19, Issue 1, January/December 2026.
This paper proposes a novel power loss reduction PWM (PLRPWM) strategy for three‐level neutral point clamped inverters. The proposed strategy aims to achieve multi‐objective optimisation by balancing low output harmonics, reduced switching losses and a balanced neutral‐point potential. ABSTRACT Three‐level neutral point clamped (3L‐NPC) converters have
Chaoqun Xiang   +5 more
wiley   +1 more source

Dynamic stability of maglev systems

open access: yes, 1994
Because dynamic instabilities are not acceptable in any commercial maglev system, it is important to consider dynamic instability in the development of all maglev systems.
Rote, D. M.   +3 more
core   +1 more source

Building Weight Measurement by Human Shaker

open access: yesStructural Control and Health Monitoring, Volume 2026, Issue 1, 2026.
The weight of a building is a fundamental parameter that plays a critical role in structural hazard assessment, finite element model updating, foundation settlement prediction, and other related fields. At present, two primary approaches are commonly used to estimate building weight: calculation based on design drawings and estimation from the total ...
Yang Li   +5 more
wiley   +1 more source

Smart Solutions: A New Direct Current Electric Machine Design to Reduce Weight and Enhance Efficiency

open access: yesGlobal Challenges, Volume 9, Issue 12, December 2025.
This article introduces a smart solution for the design of a brush DC motor with a winding‐free rotor (DCFR). The proposed model simplifies manufacturing, reduces material costs, and enhances efficiency. Designed for variable speed and solar power applications, the DCFR achieves 91.8% efficiency and a 21% weight reduction compared to conventional ...
Dmytro Ivliev   +5 more
wiley   +1 more source

Influence of High-Speed Flow on Aerodynamic Lift of Pantograph at 400 km/h

open access: yesInfrastructures
This study examines pantograph aerodynamic lift at 400 km/h, and uncovers the dynamic behaviors and mechanisms that influence pantograph–catenary performance.
Zhao Xu   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy