Results 21 to 30 of about 17,793 (302)

A Prechop Technique Using a Reverse Chopper

open access: yesJournal of Investigative Surgery, 2019
Purpose: To describe a manual prechop technique for splitting the nucleus of the lens using a recently developed reverse chopper. Methods: During the process, the reverse chopper and the Nagahara chopper are placed diagonally in the peripheral area of ...
Yang Zhao   +3 more
doaj   +1 more source

Redesigning a Stalk Chopper Mechanism for Reducing Cutting Energy and Optimizing Its Bite Length [PDF]

open access: yesBiomechanism and Bioenergy Research, 2022
Considering the increasing population of the world and the lack of human food sources, it is very important to pay more attention to fodder plants that can indirectly supply human food.
Erfan Vahedi   +2 more
doaj   +1 more source

Pengaruh Duty Cycle dan Frekuensi Terhadap Kecepatan Putar Motor DC

open access: yesTechne, 2018
Tulisan ini dibuat untuk mengetahui pengaruh perubahan frekuensi dan duty cycle terhadap kecepatan putar motor DC saat terbebani dan saat tidak dibebani yang diterapkan dengan menggunakan sistem PWM ( Pulse Width Modulation ).
Budihardja Murtianta
doaj   +1 more source

Fuzzy Logic for Improvement PID Control in D.C. Motor Speed [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2022
The paper presents a new strategy of making software modules with fuzzy control. It is the best solution for implementing complex applications. Dynamic control today takes place in discrete time and discrete values. Concurrently, it is desirable that the
GORDAN Ioan Mircea   +1 more
doaj  

Evaluation and Performance of Three-Phase Inverter Using Multiple Bidirectional Choppers Intended for 1.5-kVdc PV Systems

open access: yesIEEE Access, 2023
This article focuses on the chopper-cell number of a novel three-phase inverter for utility-scale photovoltaic (PV) systems where multiple cascaded bidirectional chopper cells and a three-phase line-frequency transformer with a three-legged core are used.
Linyue Qiao, Makoto Hagiwara
doaj   +1 more source

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

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

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

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

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

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