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Analysis of voltage forming methods for multiphase inverters

Abstract

The article discusses advantages of the multiphase AC induction motor over three or less phase motors. It presents possible stator winding configurations for a multiphase induction motor. Various fault control strategies were reviewed for phases feeding the motor. The authors propose a method for quality evaluation of voltage forming algorithm in the inverter. Simulation of a six-phase voltage source inverter, voltage in which is formed using a simple SPWM control algorithm, was performed in Matlab Simulink. Simulation results were evaluated using the proposed method. Inverter’s power stage was powered by 400 V DC source. The spectrum of output currents was analysed and the magnitude of the main frequency component was at least 12 times greater than the next biggest-magnitude component. The value of rectified inverter voltage was 373 V.


Article in Lithuanian.


Daugiafazių dažnio keitiklių įtampos formavimo metodų analizė


Santrauka. Straipsnyje pristatomi daugiafazių variklių pranašumai, palyginus su trifaziais ir vienfaziais. Apžvelgiama variklių sandara ir pristatomi daugiafazių variklių apvijų tipai. Pristatomos variklių valdymo strategijos sugedus apvijos ar inverterio galios pakopos raktui. Pasiūloma daugiafazių dažnio keitiklių įtampos formavimo algoritmų vertinimo metodika. Matlab Simulink terpėje modeliuojamas šešiafazis dažnio keitiklis, kuriame veikia sinusinio impulso skvarbos moduliavimo įtampos formavimo algoritmas. Pagal sukurtą vertinimo metodiką įvertinami dažnio keitiklio modeliavimo rezultatai, pateikiamos išvados.


Reikšminiai žodžiai: daugiafazis dažnio keitiklis, įtampos fomavimo algoritmas, daugiafazis variklis, šešiafazio dažnio keitiklio modelis.

Keyword : multiphase inverter, voltage forming method, multiphase induction motor, model of a six-phase voltage source inverter

How to Cite
Lipinskis, T. (2013). Analysis of voltage forming methods for multiphase inverters. Mokslas – Lietuvos Ateitis / Science – Future of Lithuania, 5(2), 119-123. https://doi.org/10.3846/mla.2013.22
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May 24, 2013
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