Open AccessNeural‐network‐based space‐vector pulse‐width modulation for capacitor voltage balancing of three‐phase three‐level improved power quality converter
Author(s) -
Langer Nitin,
Bhat Abdul Hamid,
Agarwal Pramod
Publication year - 2014
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2013.0216
Subject(s) - pulse width modulation , electronic engineering , space vector modulation , computer science , digital signal processor , artificial neural network , capacitor , voltage , modulation (music) , digital signal processing , power (physics) , controller (irrigation) , matlab , control theory (sociology) , engineering , electrical engineering , artificial intelligence , physics , acoustics , control (management) , quantum mechanics , agronomy , biology , operating system
In this study, an artificial neural‐network (ANN)‐based space‐vector pulse‐width modulation (SVPWM) for capacitor voltage balancing of a three‐phase three‐level neutral‐point clamped converter with improved power quality is presented. The neural‐network‐based controller offers the advantage of very fast implementation of the SVPWM algorithm. This makes it possible to use an application specific integrated circuit chip in place of a digital signal processor. The proposed scheme employs single layer feed‐forward neural‐networks at different stages along with a control algorithm using modified reference vector for capacitor voltage balancing of an improved power quality three‐phase neutral‐point clamped converter. In other words, the neural‐network receives three‐phase voltages and currents as input and generates symmetrical pulse‐width modulation waves for three phases of the converter. A simulated digital signal processor (DSP)‐based modulator generates the data which are used to train the network by a back‐propagation algorithm in the MATLAB Neural Network Toolbox. The simulation of converter with ANN‐based space‐vector modulator shows excellent performance when compared with that of conventional DSP‐based modulator.