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Analytical line-voltage THD formulation and optimization for sine- and third harmonic injection PWM in three-phase cascaded H-bridge multilevel inverters with fixed and variable DC supply ratios

Author

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  • Barbie, Eli
  • Kuperman, Alon
  • Baimel, Dmitry

Abstract

This paper presents novel analytical formulations for Line-voltage Total Harmonic Distortion (LTHD) in three-phase Cascaded H-bridge (CHB) Multilevel Inverters with variable DC supply ratios. While LTHD minimization has been well-studied for fundamental-frequency modulation techniques, this work extends such optimization to high-frequency Pulse Width Modulation (PWM) schemes, specifically the popular sine-PWM (SPWM) and Third Harmonic injection sine-PWM (THISPWM).

Suggested Citation

  • Barbie, Eli & Kuperman, Alon & Baimel, Dmitry, 2025. "Analytical line-voltage THD formulation and optimization for sine- and third harmonic injection PWM in three-phase cascaded H-bridge multilevel inverters with fixed and variable DC supply ratios," Energy, Elsevier, vol. 318(C).
    • Handle: RePEc:eee:energy:v:318:y:2025:i:c:s0360544225003111
    DOI: 10.1016/j.energy.2025.134669
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