Novel Multilevel Inverter with Minimum Number of Switches

2017 ◽  
Author(s):  
Punya Sekhar ◽  
P.V. Ramana Rao ◽  
M. Uma Vani
Keyword(s):  
Multilevel Inverter ◽  
Minimum Number

scholarly journals Solar Photovoltaic System-Based Reduced Switch Multilevel Inverter for Improved Power Quality

2022 ◽  
Vol 4 (1) ◽  
pp. 1-13
Author(s):  
Madhu Andela ◽  
Ahmmadhussain Shaik ◽  
Saicharan Beemagoni ◽  
Vishal Kurimilla ◽  
Rajagopal Veramalla ◽  
...  
Keyword(s):  
Output Voltage ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Photovoltaic System ◽  
Solar Photovoltaic ◽  
Switching Losses ◽  
Minimum Number ◽  
Multi Level ◽  
Solar Photovoltaic System

This paper deals with a reduced switch multi-level inverter for the solar photovoltaic system-based 127-level multi-level inverter. The proposed technique uses the minimum number of switches to achieve the maximum steps in staircase AC output voltage when compared to the flying capacitor multi-level inverter, cascaded type multilevel inverter and diode clamped multi-level inverter. The use of a minimum number of switches decreases the cost of the system. To eliminate the switching losses, in this topology a square wave switch is used instead of pulse width modulation. Thereby the total harmonic distortion (THD) and harmonics have been reduced in the pulsating AC output voltage waveform. The performance of 127-level MLI is compared with 15 level, 31-level and 63-level multilevel inverters. The outcomes of the solar photovoltaic system-based 127-level multi-level inverter have been simulated in a MATLAB R2009b environment.

scholarly journals Comparative analysis of various multilevel inverter symmetrical topologies with minimum number of components

2018 ◽  
Vol 7 (1.8) ◽  
pp. 77
Author(s):  
Ali Qasim Hussein Algburi ◽  
P V. Ramana Rao
Keyword(s):  
Oil And Gas ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Multilevel Inverters ◽  
Flexible Ac Transmission ◽  
Flexible Ac Transmission System ◽  
Minimum Number ◽  
Bridge Type ◽  
Comparison Table ◽  
Ac Transmission

Multilevel inverters (MLI) are frequently used in different fields like, oil and gas sectors, installations of power supply, high power and medium voltage applications and in FACTS (flexible AC transmission system) devices to improve power quality. Lot of topologies has been developed in the literature regarding multilevel inverters such as diode clamped type, flying capacitor type and cascaded H-bridge type multilevel inverters. However, several challenges are being faced while implementing these topologies like more number of switches, more losses and cost. The optimized construction of multilevel inverter is to get more number of levels with less number of switches and low total harmonic distortion. In this paper, three different existing multilevel inverter topologies have been considered and analyzed for five level output voltage. A comparison table is given for number of switches, extra diodes and voltage sources. The total work is carried by using Matlab/simulink software and results are presented.

A Novel Generalized Topology for Multi-level Inverter with Switched Series-Parallel DC Sources

2016 ◽  
Vol 4 (1) ◽  
pp. 41 ◽  
Author(s):  
S. Sridhar ◽  
P. Satish Kumar ◽  
M. Susham
Keyword(s):  
Single Phase ◽  
Pulse Width Modulation ◽  
Electronic Devices ◽  
Software Tool ◽  
Multilevel Inverter ◽  
Power Electronic ◽  
Dc Voltage ◽  
Minimum Number ◽  
In Series ◽  
Multi Level

<p>This paper presents a novel topology of Single-phase multilevel inverter for low and high power applications. It consists of polarity (Level) generation circuit and H Bridge to generate both positive and negative polarities. The proposed topology can produce more output voltage levels by switching dc voltage sources in series and parallel. The proposed topology utilizes minimum number of power electronic devices which leads to the reduction of cost, size, and weight low and consumes low power which improves the efficiency. Switching pulses are generated using Phase disposition (PD) pulse width modulation technique. Finally the effectiveness of the proposed topology is verified using MATLAB/SIMULINK software tool. 7level asymmetrical multilevel inverter prototype hardware is prepared to support the proposed topology to verify the effectiveness and its validity.</p>

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