TITLE:
Asymmetric Three-Phase Cascading Trinary-DC Source Multilevel Inverter Topologies for Variable Frequency PWM
AUTHORS:
G. Irusapparajan, D. Periyaazhagar
KEYWORDS:
Trinary Multilevel Inverter, Variable Frequency Pulse Width Modulation, Total Harmonic Distortions, Trinary-DC Source, Distortion Factor
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.4,
April
29,
2016
ABSTRACT: Asymmetric three-phase cascading Trinary-DC source Multilevel Inverter
which can achieve reduced harmonics and superior root mean square (RMS) values
of the output voltage is proposed. This topology can achieve cascaded full
bridge inverter operation with dissimilar (unequal) DC Source and it is fired
by using variable frequency pulse with modulation technique as a switching
strategy. This pulse width modulation switching strategy has a newly adopted
multicarrier single reference technique. The performance parameter factors like
Form Factor (FF), Crest Factor (CF), Total Harmonic Distortion (THD) and fundamental
RMS output voltage (VRMS) are estimated by using proposed
asymmetrical three-phase cascading multilevel inverter for several modulation
indices (0.8 - 1). The research study carries with MATLAB/SIMULINK
based simulation and experimental results obtained using appropriate prototype
(test board) to prove the viability of the proposed concept.