Selective Harmonic Elimination in Seven-Level Multilevel Inverter by using Newton-Raphson Method

  • Liong Han Wen
  • Arvin Raj A/L Shantarakanan
  • Tang Gin Soon

Abstract

The output voltage of two-level H-bridge inverter has high Total Harmonic Distortion (THD). Multilevel inverter is introduced to reduce the THD at the output voltage. This paper presents a design of cascaded H-bridge (CHB) multilevel inverter. Selective Harmonic Elimination Pulse Width Modulation (SHE-PWM) is applied to reduce the third and fifth harmonics of the inverter output voltage. Transcendental equations describing the fundamental and harmonics are solved by using Newton-Raphson (N-R) method which is written in MATLAB script. The simulation through Simulink has shown that the N-R method has successfully reduced the THD if compared with equal step method.

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Published
2020-12-31
How to Cite
HAN WEN, Liong; A/L SHANTARAKANAN, Arvin Raj; GIN SOON, Tang. Selective Harmonic Elimination in Seven-Level Multilevel Inverter by using Newton-Raphson Method. International Journal of Advanced Research in Engineering Innovation, [S.l.], v. 2, n. 4, p. 9-15, dec. 2020. Available at: <https://myjms.mohe.gov.my/index.php/ijarei/article/view/11738>. Date accessed: 24 oct. 2021.
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Articles