Results 51 to 60 of about 891 (180)
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
High-speed Maglev Digitization and Intelligentization Top-level Design
Objective Digitization and intelligence (D&I) is essential for rail transit high-quality development. Currently, there is a lack of top-level design for high-speed maglev D&I, necessitating research to meet the requirements for the high-quality ...
MENG Chuanshu
doaj +1 more source
The maglev vehicle-girder coupled vibration problem has been encountered in many maglev test or commercial lines, which significantly degrade the performance of the maglev train.
Zhou Danfeng +3 more
doaj +1 more source
A Maglev System: Modeling and Controller Design [PDF]
In this paper, the nonlinear mathematical model with five DOFs (degrees-of-freedom) of a magnetic levitation system is developed and analyzed. Then a second order sliding mode controller is proposed to regulate the levitation to a desired position, stabilize the other 4 DOFs in the nonlinear system and compensate the unknown increments on the load ...
Álvarez-Sánchez, E. +2 more
openaire +1 more source
Bibliometric Analysis of Transport Infrastructure Hypernetwork: Review and Prospects
The transport infrastructure is transitioning into a multilayer, multifunctional hypernetwork form, posing challenges to traditional single‐mode planning methods in analyzing cross‐system risk transmission mechanisms and achieving spatiotemporal resource optimization. This leads to suboptimal system synergy and resilience.
Zhiguo Shao +4 more
wiley +1 more source
Research on axle load transfer of low-medium speed maglev tractor
In order to study the axle load transfer of low-medium speed maglev tractor, the theoretical calculation formula of axle load transfer of maglev tractor was derived, and the axle load transfer results of maglev tractor under quasi-static condition were ...
LUO Jianli
doaj
Invisible transportation infrastructure technology to mitigate energy and environment
Background Traditional transportation infrastructure built by heat trapping products and the transportation vehiles run by fossil fuel, both causing deadly climate change. Thus, a new technology of invisible Flying Transportation system has been proposed
Md. Faruque Hossain
doaj +1 more source
In this work, we study the β‐fractional multicomponent Gross–Pitaevskii (G–P) system, which plays an important role in modeling Bose–Einstein condensates (BECs) and propagation in nonlinear waves. In Bose–Einstein condensation, the G–P equation is of great importance as it describes the condensate wave function’s behavior.
Naila Nasreen +5 more
wiley +1 more source
Building Weight Measurement by Human Shaker
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
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

