Results 81 to 90 of about 2,424,102 (350)

Coordination control of hybrid AC/DC microgrid

open access: yesThe Journal of Engineering, 2019
The hybrid AC/DC microgrid is considered to be the more and more popular in power systems as increasing DC loads. In this study, it is presented that a hybrid AC/DC microgrid is modelled with some renewable energy sources (e.g. solar energy, wind energy),
Beiming Liang   +8 more
doaj   +1 more source

Variable-frequency inverter controls torque, speed, and braking in ac induction motors [PDF]

open access: yes, 1974
Dc to ac inverter provides optimum frequency and voltage to ac induction motor, in response to different motor-load and speed requirements. Inverter varies slip frequency of motor in proportion to required torque.
Nola, F. J.
core   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

The ac power system testbed [PDF]

open access: yes
The object of this program was to design, build, test, and deliver a high frequency (20 kHz) Power System Testbed which would electrically approximate a single, separable power channel of an IOC Space Station.
Mildice, J., Sundberg, R.
core   +1 more source

A DC-coupled RF Amplifier in CMOS with DC-feedback [PDF]

open access: yes, 2002
A CMOS multistage RF amplifier with DC coupling is presented. A complete optimisation of the various stages is done to maximize the RF gain for a given power budget.
Annema, A.J.   +3 more
core   +1 more source

Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding

open access: yesAdvanced Engineering Materials, EarlyView.
This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou   +6 more
wiley   +1 more source

Electrical Transmission of Modernized Locomotives of Indepedent Traction Power

open access: yesCommunications, 2001
The contribution addresses diesel-electric power transmission of modernized locomotives for independent motor traction. It describes the approach to development; the solution of modernized locomotives with hybrid AC/DC power transmission, desiqued and ...
Jozef Kuchta, Miroslav Fulier
doaj   +1 more source

GaN-HEMT Based Very-High-Frequency AC Power Supply for Electrosurgery. [PDF]

open access: yesConf Proc (IEEE Appl Power Electron Conf Expo), 2021
Bao C, Mazumder SK.
europepmc   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

open access: yesAdvanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund   +6 more
wiley   +1 more source

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