Results 31 to 40 of about 12,744,689 (299)

A self-powered H-Bridge joule theory circuit for piezoelectric energy harvesting systems

open access: yesPower Electronic Devices and Components, 2022
In this paper, investigation of high direct current/voltage (DC) and power gains using H-Bridge joule theory (HBRJT) circuit with an input voltage of alternating current/voltage (AC) is carried out by avoiding higher switching frequency and additional ...
Mahesh Edla, Mikio Deguchi, Yee Yan Lim
doaj   +1 more source

Monitoring Bridge Dynamic Behaviour Using an Instrumented Two Axle Vehicle [PDF]

open access: yes, 2012
Bridge & Infrastructure Research in Ireland 2010 (BRI 10), Cork, 2-3 September 2010Highway structures such as bridges are subject to continuous degradation primarily due to ageing, loading and environmental factors.
McGetrick, P.   +3 more
core   +1 more source

Wind Tunnel Measurements of Surface Shear Stress on an Isolated Dune Downwind a Bridge

open access: yesApplied Sciences, 2020
As part of a comprehensive environmental assessment of the Dun-Gel railway project located in Dunhuang city, Gansu Province, China, a wind tunnel experiment was proposed to predict surface shear stress changes on a sand dune when a bridge was built ...
Wenbo Wang   +3 more
doaj   +1 more source

Analysis of Maximum Load Unbalancing Limits of Cascaded H-Bridge Rectifier Under Unity Power Factor

open access: yesIEEE Access, 2019
In a cascaded H-bridge rectifier (CHBR), the dc capacitor voltages need to be controlled to balance by the voltage balance controller when the loads are unbalanced.
Zhixuan Gao   +5 more
doaj   +1 more source

Reduction of DC Capacitor Size in Three-Phase Input/Single-Phase Output Power Cells of Multi-Cell Converters through Resonant and Predictive Control: A Characterization of Its Impact on the Operating Region

open access: yesMathematics, 2023
Cascaded H-bridge drives require using a significant-size capacitor on each cell to deal with the oscillatory power generated by the H-bridge inverter in the DC-link.
Roberto O. Ramírez   +5 more
doaj   +1 more source

Vibration Response Analysis of Simply Supported Box Girder Bridge-Maglev Train in Accelerated Test of Changsha Maglev Express

open access: yesAdvances in Materials Science and Engineering, 2020
In order to study and analyze the vibration response of simply supported box girder bridge-maglev vehicle, a 25 m span simply supported box girder bridge of Changsha Maglev Express was selected as the research object.
Xiao Liang   +5 more
doaj   +1 more source

A hybrid DC circuit breaker based on a generalized H-bridge circuit

open access: yesZhejiang dianli, 2023
Given the rapid development of multi-terminal DC power grids and the treatment of DC faults, a high-voltage hybrid DC circuit breaker based on a generalized H-bridge circuit is proposed.
LU Yi   +6 more
doaj   +1 more source

Reliability analysis-based investigation of the historical Széchenyi Chain Bridge deck system

open access: yesResults in Engineering, 2022
Before the recent reconstruction, significant corrosion damages were observed on the deck system of the ∼170-year-old Széchenyi Chain Bridge. Therefore, an advanced reliability analysis-based study is executed to assess the risk of failure of the ...
Balázs Kövesdi   +3 more
doaj   +1 more source

Study of parallel operation single phase H-bridge CSI and H-bridge VSI

open access: yesInternational Journal of Power Electronics and Drive Systems (IJPEDS)
In some applications, parallel operation of some single-phase inverters with different characteristics is a necessity, such as in a photovoltaic power conversion system. Each power inverter with its power source works, delivering power to a common load which cannot be supplied by a single power inverter.
Suroso, Winasis, Retno Supriyanti
openaire   +1 more source

Central Nervous System Tumors Among Infants in Canada: A Report From CYP‐C

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) tumors in infants are rare, pose unique clinical challenges, and lack large‐scale evidence‐based data to guide management. This study seeks to describe CNS tumors in Canadian infants and to compare their outcomes with those of older children.
Samuel Sassine   +17 more
wiley   +1 more source

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