The multilevel inverter topology gives the advantages of usage in high power and high voltage application with reduced harmonic distortion without a transformer. This paper presents a comparative study of nine level diode clamped inverter for constant Switching frequency of sinusoidal Pulse width Modulation and sinusoidal Natural Pulse width Modulation with switching frequency Optimal Modulation.

In this paper a recent topology, the multilevel carrier based inverter topology has been presented with its advantages over conventional inverter schemes. A comparative study has been done within the topology used between pure sinusoidal reference waveform and the modified sinusoidal reference waveform which constitutes harmonics. The entire simulation has been done in MATLAB Simulink and the o...

In this paper, a seven level modified cascaded multilevel inverter is proposed for industrial drive applications. Apart from selecting the conventional level inverters, Multi level inverters has been chosen for the industrial drive applications as it reduces the total harmonic distortion. The involvement of higher number of switches increases the complexity of the system, which leads to losses ...

Many real-world systems are governed by the timedependent, nonlinear differential equations. Dynamics of an electrical system are also best described using the very equations. Being one of the preferred machines when using advanced control algorithms for electric drives, DC motor has been selected for position tracking. Defining dynamic equations of the motor derived from the theory of nonlinea...

Introduction: Multilevel converters are finding considerable attention in academia and industry as one of the preferred choices for high power conversion applications, such as traction drives, active filters, reactive power compensators, photovoltaic power conversion, uninterruptible power supplies, static compensators and flexible AC transmission systems. In general, multilevel converters are ...

The three-level Neutral Point Clamped (NPC) inverter has become matured and widely used topology in high-power medium-voltage applications due to several advantages associated with it as compared to other available multilevel topologies. This paper presents a brief review on operation of threelevel NPC inverter. Different modulation strategies used in NPC inverter is also discussed. The problem...

The fulfillment of wide variety in energy demand by growing industries and incorporation of renewable energy source in power system is made possible by multilevel inverter. From design prospective it is also important to take care of losses took place in inverter i.e. switching and conduction losses in addition to the modulation techniques which look after harmonic spectrum in output voltage/cu...

Multilevel inverters have been opted for high power applications due to reduced harmonic distortion, less device voltage stress and modular structure. This work proposes new modified hybrid Hbridge multilevel inverter using auxiliary switch. This proposed inverter produces five levels output with five power devices and clamping diodes as a phase voltage and nine levels as a line voltage.The lev...

This paper proposes a nine level cascaded multilevel inverter based on the flip flops and logic gates. Generally multilevel inverter is used to achieve the high power by using a series of power semiconductor switches with the several dc voltage sources which is used to perform the power conversion. In this paper the flip flop based CMLI is compared with the conventional CMLI. The flip flops and...

Multilevel inverter technology has emerged recently as a very important alternative in the area of high power medium-voltage control and also for improving the total harmonic distortion by reducing the harmonics. Generally, the poor quality of voltage and current of a conventional inverter fed induction machine is obtained due to the presence of harmonics and hence there is a significant level ...