scholarly journals EXPERIMENTAL INVESTIGATION OF A SIX-PHASE VARIABLE FREQUENCY DRIVE / ŠEŠIŲ FAZIŲ DAŽNINĖS PAVAROS EKSPERIMENTINIS TYRIMAS

2016 ◽  
Vol 8 (3) ◽  
pp. 339-344 ◽  
Author(s):  
Tadas Lipinskis ◽  
Vytautas Bleizgys
Keyword(s):  
Frequency Converter ◽  
Voltage Source ◽  
Maximum Efficiency ◽  
Variable Frequency ◽  
Phase Variable ◽  
Phase Voltage ◽  
Variable Frequency Drive ◽  
Matlab Simulink ◽  
Ac Motor ◽  
Data Acquisition Card

Experimental results of a variable frequency drive, consisting of a six-phase voltage source inverter and six-phase asynchronous AC motor are presented in this paper. Frequency converter uses a six-phase space vector PWM scheme created by the author. The voltage forming scheme is implemented in Matlab/Simulink, and logical signals for inverter control are transferred from PC via the National instruments PCI-6024E data acquisition card. Voltages, at which the experimental motor operates at maximum efficiency, were determined experimentally. Motor transitions, when it is operating with one, two, and three failed phase windings are presented, confirming that a six-phase motor can operate with up to three failed windings. Darbe pateikiami dažninės pavaros, sudarytos iš šešių fazių dažnio keitiklio ir šešių fazių asinchroninio elektros variklio, eksperimentinių tyrimų rezultatai. Šešių fazių įtampai formuoti taikomas autoriaus sukurtas erdvinių vektorių moduliacijos algoritmas, naudojantis vidutinio ilgio vektorius. Algoritmas realizuotas asmeniniu kompiuteriu Matlab/Simulink terpėje. Signalams inverterio raktų valdymui iš kompiuterio gauti panaudotas National Instruments PCI-6024E duomenų įvesties/ išvesties įrenginys. Atlikti inverterio įtampos, kuriai esant šešių fazių variklis dirba maksimaliu naudingumo koeficientu, tyrimai. Pateikiami šešių fazių variklio greičio ir sukimo momento pereinamųjų procesų tyrimo rezultatai, esant vienos, dviejų ir trijų variklio apvijų gedimams, patvirtinantys, kad šešių fazių variklis gali ribotai veikti sugedus iki trijų apvijų.

scholarly journals Design and Development of Three-Phase Voltage Source Inverter for Variable Frequency Drive

2019 ◽  
Vol 705 ◽  
pp. 012016
Author(s):  
A S Nurhaida ◽  
A Z Ahmad Firdaus ◽  
Kamarulzaman Kamarudin ◽  
S A Azmi ◽  
M J M Ridzuan ◽  
...  
Keyword(s):  
Voltage Source ◽  
Variable Frequency ◽  
Phase Voltage ◽  
Voltage Source Inverter ◽  
Design And Development ◽  
Variable Frequency Drive ◽  
Three Phase

scholarly journals Unidirectional voltage converter for battery electric vehicle ultrafast charger

2020 ◽  
Author(s):  
Jerzy Ryszard Szymanski ◽  
Marta Zurek-Mortka ◽  
Dulal Acharjee
Keyword(s):  
Electric Vehicles ◽  
Frequency Converter ◽  
Motor Drives ◽  
Phase Voltage ◽  
Dc Microgrid ◽  
Pwm Inverter ◽  
Ac Motor ◽  
Three Phase ◽  
Fast Charging ◽  
Ac Motor Drives

Abstract This paper proposes the use of a frequency converter used in the AC motor drives to build a fast charging battery converter for electric vehicles (EV). The possibility of using semiconductor integrated modules with two-level inverters and diode rectifiers for the construction of high power voltage DC/DC converters has been demonstrated. The DC voltage of the EV battery during charging is obtained by rectifying the three-phase voltage of the PWM inverter. A 600 V DC microgrid was used to power the inverter. Simulation tests of the DC/DC converter model were carried out. The results of simulation tests were verified experimentally on a laboratory stand.

Radiation Disturbance of Variable Frequency Winch Drive System in Underground Coal Mines

2013 ◽  
Vol 441 ◽  
pp. 552-556
Author(s):  
Hui Chen ◽  
Wen Bing Tang ◽  
Zhen Guan Cao ◽  
Hua Ping Zhou
Keyword(s):  
Field Strength ◽  
Electromagnetic Radiation ◽  
Frequency Converter ◽  
Coal Mines ◽  
Drive System ◽  
Radiation Environment ◽  
Regulation System ◽  
Variable Frequency ◽  
Variable Frequency Drive ◽  
Underground Coal Mines

In order to study the effect of variable frequency drive system upon electromagnetic radiation environment in underground coal mines, the mechanism of electromagnetic radiation from the variable frequency speed regulation system has been analyzed deeply, and the radiated electromagnetic noise from the variable frequency winch system with rated voltage of 1140V in underground coal mines has been measured. The measuring results show that the radiated emission from variable frequency drive system has certain effects on electromagnetic radiation environment in underground coal mines. The maximum radiated E-field strength reaches 123dBμV/m within the range of 9kHz to 20MHz nearby the frequency converter, and radiated E-field strength is no more than 33dBuV/m above 20MHz. Nearby the winch motor, the radiated E-field strength is weak, but the frequency spectrum of radiated E-field noises is more wide, which mainly distributes from 20MHz to 1GHz, but the maximum radiated E-field strength is less than 37dBμV/m above 20MHz.

scholarly journals Power sharing algorithm for vector controlled six-phase AC motor with four customary three-phase voltage source inverter drive

2015 ◽  
Vol 18 (3) ◽  
pp. 408-415 ◽  
Author(s):  
Sanjeevikumar Padmanaban ◽  
Gabriele Grandi ◽  
Frede Blaabjerg ◽  
Joseph Olorunfemi Ojo ◽  
Patrick William Wheeler
Keyword(s):  
Power Sharing ◽  
Voltage Source ◽  
Phase Voltage ◽  
Voltage Source Inverter ◽  
Ac Motor ◽  
Three Phase
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