Results 21 to 30 of about 72,816 (336)

Modeling of DC Elevator Motor Drive forMid-rise Building [PDF]

open access: yesEngineering and Technology Journal, 2013
An elevator is a platform, either open or enclosed, used for lifting people or freight to upper floors within a building. Elevators are a standard part of any tall commercial or residential building.
Jamal A. Mohammed, Ahlam L. Shuraiji
doaj   +1 more source

Pengoptimalan Kinerja Pengereman Regeneratif Motor BLDC menggunakan Cascaded Boost Converter

open access: yesJurnal Elkomika, 2021
ABSTRAK Mesin Brushless Dircet Current (BLDC) digunakan pada kendaraan listrik karena memiliki torsi yang besar dan memungkinkan untuk pengereman regeneratif.
DANIEL RAHADIAN FIRMANTO   +3 more
doaj   +1 more source

A Hybrid PV-Battery System for ON-Grid and OFF-Grid Applications—Controller-In-Loop Simulation Validation

open access: yesEnergies, 2020
In remote locations such as villages, islands and hilly areas, there is a possibility of frequent power failures, voltage drops or power fluctuations due to grid-side faults.
Umashankar Subramaniam   +5 more
doaj   +1 more source

Single bunch selection for 162.5 MHz radio-frequency quadrupole accelerator

open access: yesHe jishu, 2021
BackgroundThe nuclear physics experiment terminal of the China initiative accelerator driven system (CiADS) accelerator device requires a single bunch. The frequency of radio-frequency quadrupole (RFQ) accelerator of CiADS facitily is 162.5 MHz, so the ...
MA Zhiguo   +3 more
doaj   +1 more source

Transformation the contunuum current vehicles actuated by a chopper in alternating current actuated by frequency converter and asynchronous power engine

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2003
The present work shows the methodology and the conditions that have to be fulfilled to transform the continuum current vehicles actuated by a chopper into alternating current vehicles actuated by frequency converter and asynchronous power engine.
Ioan Bele, Liviu Sevastian Bocîi
doaj   +1 more source

Design of a wavelength frame multiplication system using acceptance diagrams [PDF]

open access: yes, 2013
The concept of Wavelength Frame Multiplication (WFM) was developed to extend the usable wavelength range on long pulse neutron sources for instruments using pulse shaping choppers. For some instruments, it is combined with a pulse shaping double chopper,
Lieutenant, K.   +2 more
core   +3 more sources

Space-Time Approach to Scattering from Many Body Systems [PDF]

open access: yes, 1997
We present scattering from many body systems in a new light. In place of the usual van Hove treatment, (applicable to a wide range of scattering processes using both photons and massive particles) based on plane waves, we calculate the scattering ...
A. Q. R. Baron   +26 more
core   +2 more sources

An Integrated Thermopile-Based Sensor with a Chopper-Stabilized Interface Circuit for Presence Detection

open access: yesSensors, 2019
This paper presents a sensor-readout circuit system suitable for presence detection. The sensor consists of a miniaturized polysilicon thermopile, realized employing MEMS micromachining by STMicroelectronics, featuring a responsivity value equal to 180 V/
Elisabetta Moisello   +5 more
doaj   +1 more source

An Apparatus and Method for Evaluating Particle-Size Distribution of Small Grain Crop Residues

open access: yesAgriEngineering, 2022
Size-reduction of small grain residue is required on the combine harvester to promote uniform distribution of residue across the full harvested width. However, unnecessary size reduction increases energy expenditures that can reduce harvester capacity ...
Cyrus M. Nigon   +2 more
doaj   +1 more source

SPHERES, J\"ulich's High-Flux Neutron Backscattering Spectrometer at FRM II [PDF]

open access: yes, 2012
SPHERES (SPectrometer with High Energy RESolution) is a third-generation neutron backscattering spectrometer, located at the 20 MW German neutron source FRM II and operated by the Juelich Centre for Neutron Science.
Alefeld B.   +19 more
core   +2 more sources

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