Electrical Engineering

, Volume 100, Issue 2, pp 733–739 | Cite as

Output voltage quality analysis of three-phase multilevel inverters

  • Abir Rehaoulia
  • Habib Rehaoulia
  • Farhat Fnaiech
Original Paper


Multilevel inverters became a key piece in most energy conversion, transportation and management systems. The present paper encompasses a wide total harmonic distortion (THD) investigation of the multilevel inverter output voltages. Such investigation is conducted with cascaded topology for some reasonable number of inverter levels L and various modulation index m. A novel and efficient approach is developed to express analytically the voltage THD bounds. Found upper and lower THD limits for arbitrary L and m apply also for neutral point clamped and flying capacitor topologies. They could really serve as reference for quality analysis of multilevel inverters.


Multilevel inverters Voltage quality THD bounds PWM modulation 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Abir Rehaoulia
    • 1
  • Habib Rehaoulia
    • 1
  • Farhat Fnaiech
    • 1
  1. 1.Research Laboratory SIME, ENSITUniversity of TunisTunisia

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