Study the Effect of Switching Frequency on THD of Multilevel Inverter

  • Received
    October 8, 2022
  • Revised
    November 25, 2022
  • Accepted
    December 2, 2022
  • Published
    December 11, 2022


  • Laith S. Salman
  • Harith Al-Badrani


This study looks at a single phase nine level inverter with asymmetrical cascaded H-Bridge multilevel inverter topology that requires fewer components when compared to other techniques MATLAB Simulink has been used to create and model inverters with various switching frequencies. Observe the effect of total harmonic distortion (THD) without and with a passive filter. The power circuit for the asymmetrical cascaded H-bridge multilevel inverter is controlled using a sinusoidal pulse width modulation (SPWM) technique. The THD is used to compare the efficacy.




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About the Authors:

Layth S Salman got his B.Sc. and M.Sc. degrees from College of Electronics Engineering, Ninevah University, Mosul, Iraq in 2014 and 2022 respectively. His research interests focus on Power Electronics and design of power converters.

Harith Al-Badrani received the B.Sc and M.Sc. degrees in Electrical Engineering from Northern Technical University, Mosul, Iraq, in 2003 and 2006, respectively. Dr Al-Badrani got his Ph.D.-Ing. degree in Power Electronics and Electrical Drives at the Department of Electrical Engineering and Computer Science, University of Siegen, Germany in 2018. He worked as Scientific Researcher at University of Siegen from 2015 to 2018. Dr.-lng. Al[1]Badrani currently working as an assistant professor at College of Electronics Engineering, Ninevah University, Mosul, Iraq. His research interests focus on Power Electronics and Electrical Drives.