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Published in:

Volume 7 Issue 3
March-2020
eISSN: 2349-5162

Unique Identifier

JETIR2003051

Page Number

318-323

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Title

21 LEVEL STAIRCASE SINE WAVE INVERTER WITH REDUCED SWITCHES AND THD

ISSN

2349-5162

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"21 LEVEL STAIRCASE SINE WAVE INVERTER WITH REDUCED SWITCHES AND THD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 3, page no.318-323, March-2020, Available :http://www.jetir.org/papers/JETIR2003051.pdf

Abstract

Several industrial applications require high power inverter with sinusoidal waveforms with minimum distortion. For medium and high power applications, it is difficult to attain depending on a single switch. Therefore, the concept of multilevel inverters where introduced in 1974. At present situation, multilevel inverter is becoming more popular due to its staircase output whose characteristics is closer to the characteristics of sinusoidal waveform. But generally it has some disadvantages like, requirement of increased number of switches and complex pulse width modulation methods to reduce harmonics. The cascaded H-bridge multilevel inverter requires least number of components to achieve various voltage level by which the quality output is obtained. However as the number of voltage levels m grows, the number of active switches increases according to 2× (m-1) for the cascaded H Bridge. Here, the novel multilevel inverter topology with a reduced number of power switches is proposed and the switching frequency is getting reduced. The power quality of the proposed system is improved by using selective harmonic elimination (SHE) method. The whole system is numerically reformed developing MATLAB/SIMULINK and the simulation results are presented.

Key Words

Multilevel inverter (MLIs), PWM techniques and Total Harmonic Distortion (THD), Cascaded H-bridge, SHE.

Cite This Article

"21 LEVEL STAIRCASE SINE WAVE INVERTER WITH REDUCED SWITCHES AND THD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 3, page no. pp318-323, March-2020, Available at : http://www.jetir.org/papers/JETIR2003051.pdf

Publication Details

Published Paper ID: JETIR2003051
Registration ID: 229391
Published In: Volume 7 | Issue 3 | Year March-2020
DOI (Digital Object Identifier):
Page No: 318-323
ISSN Number: 2349-5162

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Cite This Article

"21 LEVEL STAIRCASE SINE WAVE INVERTER WITH REDUCED SWITCHES AND THD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 3, page no. pp318-323, March-2020, Available at : http://www.jetir.org/papers/JETIR2003051.pdf




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