A Review On Various Multilevel Inverter Topologies

Author's Name: C.R.Balamurugan, S.P.Natarajan & M.Arumugam
Subject Area: Science and Engineering
Subject Engineering
Section Research Paper


Multilevel inverter, PWM, CMLI, DMLI, FCMLI.


Multi-level inverters play a key role in today s microgrids with renewable energy sources. It is a power electronic device that is used for high voltage and high power applications, with the added advantages of low switching stress and lower total harmonic distortion (THD), hence reducing the size and bulk of the passive filters. It gives the output current waveform which is nearly sinusoidal in nature. This paper presents a review on various types of multilevel inverter. Therefore with less number of switches in the circuit, there will be reduction in the gate driver circuits, weight and reduces the THD . A five level inverter will be simulated with the implementation of PWM techniques and its effect on the harmonic spectrum will be analyzed. The system will be modelled with the help of MATLAB/SIMULINK. (This paper compares different topologies of inverters (Diode clamped inverter, Flying capacitor clamped inverter, Cascaded H-bridge inverter and asymmetrical MLI).

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