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Variable-frequency drive

About: Variable-frequency drive is a research topic. Over the lifetime, 837 publications have been published within this topic receiving 5691 citations. The topic is also known as: VFD.


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Patent
21 Sep 2011
TL;DR: In this article, the rotational speed of an induction motor is estimated by scanning the rotor frequency of the induction motor and determining either the error between a detected DC-bus voltage and a set DCbus voltage, or the discrepancy between the detected output current and the set output current, so that the rotation speed can be searched out.
Abstract: Provided is a variable frequency drive and a rotation speed searching apparatus for an induction motor incorporated therein. The rotation speed searching apparatus is featured by scanning the rotor frequency of the induction motor and determining either the error between a detected DC-bus voltage and a set DC-bus voltage or the error between a detected output current and a set output current, so that the rotation speed of the induction motor can be searched out.

4 citations

Proceedings ArticleDOI
A R Harsha1, Pranupa S, B M Kiran Kumar, S. Nagaraja Rao, M S Indira 
09 Oct 2020
TL;DR: In this paper, the authors present an implementation of a Variable Frequency Drive (VFD) controller for a three phase induction motor driven by single phase supply on an Arduino platform, which consists of a rectifier-inverter combination along with a DC link.
Abstract: Induction Motors (IM) are work horse of power industries. Controlling of IM is crucial task in most of the applications. This paper presents implementation of a Variable Frequency Drive (VFD) controller for a three phase induction motor driven by single phase supply on an Arduino platform. The hardware setup involves a rectifier-inverter combination along with a DC link. The present work concentrates on programming the timers of ATMEGA 2560 microcontroller to obtain the required switching pulses. The simulation results of the developed switching control technique with due validation from a hardware setup are presented.

4 citations

Journal ArticleDOI
TL;DR: A method for studying the dynamics of an asynchronous electric drives with frequency control from the input side of the signal for setting the speed of rotation of the electric motor using a constant speed reference signal to a harmonic variable frequency signal.
Abstract: The article proposes and substantiates a method for studying the dynamics of an asynchronous electric drives with frequency control from the input side of the signal for setting the speed of rotation of the electric motor. In this method, a constant speed reference signal is added to a harmonic variable frequency signal. The set of amplitude changes and phase shifts of velocity oscillations are the initial data for identifying the dynamics of the studied control method. The logic of this method is determined by the previously obtained nonlinear transfer function of the link that forms the mechanical moment in the asynchronous electric drive with frequency control. Experiments have shown the dynamic benefits of the drive with positive stator current feedback.

4 citations

Journal ArticleDOI
TL;DR: In this article, the authors describe the simulation of a three-phase multilevel common source converter of 15-line levels, as variable frequency drive for fed induction motors, which is optimized in the first 50 harmonic responses; the optimization algorithm was developed in Matlab.
Abstract: This paper describes the simulation of a three-phase multilevel common source converter of 15-line levels, as variable frequency drive for fed induction motors. The variable frequency drive is optimized in the first 50 harmonic responses; the optimization algorithm was developed in Matlab. The simulation results validate the benefits of this kind of fed induction motor with regard of the power quality in both: voltage and electrical current behaviour.

4 citations

Patent
24 Aug 2016
TL;DR: The utility model provides a testing device for control panel of variable -frequency drive contains power control?section, power strip, discharge resistance, test private circuit board, operating panel, host computer and host computer testing software, control panel fixing device, test?probes, box Power Control?section controlling means's powering up and down passes through discharge resistance and realizes the repid discharge when falling the electricity as mentioned in this paper.
Abstract: The utility model provides a testing device for control panel of variable -frequency drive contains power control?section, power strip, discharge resistance, test private circuit board, operating panel, host computer and host computer testing software, control panel fixing device, test?probes, box Power control?section controlling means's powering up and down passes through discharge resistance and realizes the repid discharge when falling the electricity The power strip with 220V input power switching over for + 15V, 5V, 24V power offer and survey test panel It passes through the probe and is observed and controled plate making to be connected to survey test panel to through 232 serial portss and upper computer connection Operating panel passes through the probe connector control panel Host computer software is through stopping with opening of survey test panel communication control test to show the test result The utility model provides a measure because of the manual work, appear that efficiency of software testing is lower, the big scheduling problem of error

4 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20239
202220
202143
202084
201956
201887