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Analysis of THD and Output Voltage for Seven Level Asymmetrical Cascaded H-Bridge Multilevel Inverter using LSCPWM Technique
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 112 - Number 1 |
| Year of Publication: 2015 |
| Authors: Anuradha Singh, Mohit Jain, Suman Singh |
10.5120/19627-1197
|
Anuradha Singh, Mohit Jain, Suman Singh . Analysis of THD and Output Voltage for Seven Level Asymmetrical Cascaded H-Bridge Multilevel Inverter using LSCPWM Technique. International Journal of Computer Applications. 112, 1 ( February 2015), 1-6. DOI=10.5120/19627-1197
Abstract
In this paper, a seven level asymmetrical cascaded H-Bridge multilevel inverter in three phase configuration using different level-shifted carrier-based pulse width modulation techniques is discussed. Multilevel inverters have become more popular due to high voltage and high power output applications. Comparable to traditional PWM inverters, multilevel inverters are able to reduced switching losses, low harmonic distortion and high-voltage capability with low costs. This paper presents ACMLI using fixed frequency level-shifted carrier-based PWM technique for three phase squirrel cage induction motor as a load. In this topology, two H-Bridges with 8-IGBT switches are used for getting seven level output voltage for each phase leg. Simulation using MATLAB-SIMULINK is done to verify the performance of the ACMLI using LSCPWM techniques. Simulation results for this proposed scheme are shown in this paper.
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