Dragonfly algorithm-based optimization for selective harmonics elimination in cascaded H-bridge multilevel inverters with statistical comparison

Muhammad Ayyaz Tariq *, Umar Tabrez Shami, Muhammad Salman Fakhar, Syed Abdul Rahman Kashif, Ghulam Abbas*, Nasim Ullah, Alsharef Mohammad, Mohamed Emad Farrag

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

Harmonics worsen the quality of electrical signals, hence, there is a need to eliminate them. The test objects under discussion are single-phase versions of cascaded H-bridge (CHB) multilevel inverters (MLIs) whose switching angles are optimized to eliminate specific harmonics. The Dragonfly Algorithm (DA) is used to eradicate low-order harmonics, and its statistical performance is compared to that of many other optimization techniques, including Particle Swarm Optimization (PSO), Accelerated Particle Swarm Optimization (APSO), Differential Evolution (DE), and Grey Wolf Optimization (GWO). Various scenarios of the algorithms’ search agent population for inverters with seven, nine, and eleven levels of output voltages are comprehensively addressed in this research. No algorithm shows total dominance in every scenario. The DA is least impacted by the change in dimensions of the narrated problem
Original languageEnglish
Article number6826
Number of pages18
JournalEnergies
Volume15
Issue number18
Early online date18 Sep 2022
DOIs
Publication statusPublished - Sep 2022

Keywords

  • selective harmonics elimination (SHE)
  • cascaded H-bridge (CHB)
  • multilevel inverter (MLI)
  • switching angles
  • metaheuristic algorithms
  • dragonfly algorithm (DA)

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