Journal of Electrical Engineering : Volume 17 / 2017 - Edition : 3

NEW ASYMMETRIC SEVEN LEVEL INVERTER WITH MINIMUM NUMBER OF VOLTAGE SOURCES AND SWITCHES

Authors:
Thiyagarajan V
Somasundaram P
Domain:
power electronics
Abstract:
The main objective of this paper is to propose a new single phase asymmetrical type seven level inverter with minimum number of DC voltage sources and switches. The proposed multilevel inverter consists of two parts namely, level creator part which generate positive levels of outputs and polarity changing part which helps to change the polarity of the output voltage. The proposed inverter consist of two DC voltage sources, three main switches and four switches of H-bridge inverter to generate seven level output. Different methods used to calculate the switching angles are presented and the results are compared. The simulation is performed using MATLAB/SIMULINK software to verify the function of the proposed inverter.
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