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An Improved Space Vector PWM Algorithm with a Seven-Stage Switching Sequence for Three-Level Neutral Point Clamped Voltage Source Inverters

Author

Listed:
  • Aleksandr N. Shishkov

    (Project Activity Center, Scientific Activity Sector, Moscow Polytechnic University, Bolshaya Semyonovskaya Street 38, 107023 Moscow, Russia)

  • Maxim M. Dudkin

    (Polytechnic Institute, Department of Electric Drive, Mechatronics and Electromechanics, South Ural State University, Lenin Prospect 76, 454080 Chelyabinsk, Russia)

  • Aleksandr S. Maklakov

    (Project Activity Center, Scientific Activity Sector, Moscow Polytechnic University, Bolshaya Semyonovskaya Street 38, 107023 Moscow, Russia)

  • Van Kan Le

    (Project Activity Center, Scientific Activity Sector, Moscow Polytechnic University, Bolshaya Semyonovskaya Street 38, 107023 Moscow, Russia)

  • Andrey A. Radionov

    (Project Activity Center, Scientific Activity Sector, Moscow Polytechnic University, Bolshaya Semyonovskaya Street 38, 107023 Moscow, Russia)

  • Vlada S. Balabanova

    (Project Activity Center, Scientific Activity Sector, Moscow Polytechnic University, Bolshaya Semyonovskaya Street 38, 107023 Moscow, Russia)

Abstract

The main purpose of this research is to develop an improved space vector pulse-width modulation (SVPWM) algorithm for three-level (3L) neutral point clamped (NPC) voltage source inverters (VSIs). The results of experiments conducted on the three-level power converter laboratory setup showed that the proposed SVPWM algorithm with a seven-stage switching sequence (SS) can reduce a VSI’s switching frequency by 43.48% compared to the SVPWM algorithm with the base SS. It also improves the neutral point (NP) voltage balance in the VSI DC link by 4.2% by controlling the duty factor of distributed base vectors in each SVPWM period based on phase load currents. It reduced the values of the 5th- and 7th-order harmonics of the VSI output voltage by 19% and 15.7%, respectively. The results show that the usage of the improved SVPWM algorithm helps increase the efficiency of a 3L NPC VSI by 0.6% and reduce the higher harmonics. The obtained results confirm the efficiency of the suggested algorithm and its great potential for power converters in industry.

Suggested Citation

  • Aleksandr N. Shishkov & Maxim M. Dudkin & Aleksandr S. Maklakov & Van Kan Le & Andrey A. Radionov & Vlada S. Balabanova, 2025. "An Improved Space Vector PWM Algorithm with a Seven-Stage Switching Sequence for Three-Level Neutral Point Clamped Voltage Source Inverters," Energies, MDPI, vol. 18(10), pages 1-17, May.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:10:p:2452-:d:1653028
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