Precise position control of ultrasonic motors using three parameters high speed switching method
Nihon Kikai Gakkai ronbunshu, 2021 The rotation speed of the ultrasonic motor depends on three parameters such as frequency, voltage and phase difference. In current mainstream drive circuits using a step-up transformer, ultrasonic motors are controlled frequency (rotation speed) by ...
Masato OKA, Kanya TANAKA
doaj +1 more source
Development of variable voltage variable frequency drive system for induction motor speed control [PDF]
, 2021 This project describes the development of a Variable Voltage Variable Frequency (VVVF) system that controls the speed of Induction Motor (IM) at specific speed.
Tan, Lorinna Mei Hua
core
The Characteristic of Variable Frequency Drive for Water Flow Control in the SFC Plant
, 2021 One of several techniques to control fluid flow-rate through a pump is using variable frequency drive. This paper presents how experiment be able to perceive the characteristic of variable frequency drive (VFD) to control water flow-rate in the ...
S. N. Patrialova +3 more
semanticscholar +1 more source
Direct torque control for dual three-phase induction motor drives [PDF]
, 2004 A direct torque control (DTC) strategy for dual three-phase induction motor drives is discussed in this paper. The induction machine has two sets of stator three-phase windings spatially shifted by 30 electrical degrees.
Bojoi, R. +4 more
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Entanglement Rate for Gaussian Continuous Variable Beams [PDF]
, 2016 We derive a general expression that quantifies the total entanglement production rate in continuous variable systems, where a source emits two entangled Gaussian beams with arbitrary correlators.This expression is especially useful for situations where ...
Deng, Zhi Jiao +2 more
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Research on dynamic characteristics of variable frequency drive hydraulic winch system
Gong-kuang zidonghua, 2019 A closed-loop control simulation model of variable frequency drive hydraulic winch system was built using AMESim, and the dynamic characteristics of the hydraulic winch system under different load mutations were simulated and analyzed using the model ...
DING Ga
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INSTALLATION, COMMISSIONING AND TROUBLE SHOOTING OF VARIABLE FREQUENCY DRIVE [PDF]
, 2013 In this thesis, the installation of variable frequency drive on board a ship is introduced briefly. In this particular study the variable frequency drive was retro-fitted to the ship and it also required that some alternation work was performed on board.
Kuituniemi, Santtu
core +1 more source
Electromagnetic compatibility in operation of group cranes with variable frequency drive [PDF]
, 2019 В статье приведены результаты исследований электромагнитной совместимости систем питания кранов с частотно-регулируемыми приводами в режимах потребления и рекуперации энергии приих одновременной работе.
Авдеев, Игорь Викторович +4 more
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Влияние модулированного питающего напряжения на межвитковую изоляцию [PDF]
, 2000 Описание научно-квалификационной работы. В работе исследованы особенности электротеплового старения изоляции низковольтных обмоток электрических двигателей в составе частотно-регулируемого привода и предложены рекомендации по повышению надежности ...
Blümich, Bernhard, Demco, Dan Eugen
core +2 more sources
KONSERVASI ENERGI DENGAN KENDALI SISTEM PEMOMPAAN AIR MENGGUNAKAN VARIABLE FREQUENCY DRIVE
Al-Ulum, 2017 In some forms, energy is the basic input to life. Energy is equally important to improve the quality of life. Energy conservation can help reduce the demand for energy globally and indirectly improve the environment by reducing the use of fossil fuels ...
Sofyar Sofyar
doaj +1 more source