Development and testing midpoint voltage balance algorithms of three-level inverters

Authors

  • L. Stranyóczky Author
  • A. Balogh Author
  • Z. Süt˝o Author
  • I. Varjasi Author

DOI:

https://doi.org/10.24084/repqj21.382

Keywords:

Multi level, Inverter, Midpoint, Balance, Low ripple, Modulation, Simulation, Simulink code generation

Abstract

Nowadays, the use of inverters is increasing inmore and more applications. Environmental awareness is becom-ing a trend, so more and more people install solar energy systemson their houses, which also require the use of inverters. Higherpower levels have led to the emergence of three-level inverterswhich has opened up new challenges, such as the issue of mid-point voltage balancing. This paper discusses voltage balancingand voltage ripple reduction techniques for three-level inverterswith Neutral-Point Clamped (NPC) topology. The balancing isbased on injecting zero-sequence voltage component in carrier-based modulation. The viability of the modulation techniques areverified by computer simulation and then tested on hardware.

Author Biographies

  • L. Stranyóczky

     Department of Automation and Applied Informatics, Faculty of Electrical Engineering and Informatics, Budapest

    University of Technology and Economics, M˝uegyetem rkp. 3., H-1111 Budapest, Hungary

     

  • A. Balogh

    Department of Automation and Applied Informatics, Faculty of Electrical Engineering and Informatics, Budapest

    University of Technology and Economics, M˝uegyetem rkp. 3., H-1111 Budapest, Hungary

  • Z. Süt˝o

    Department of Automation and Applied Informatics, Faculty of Electrical Engineering and Informatics, Budapest

    University of Technology and Economics, M˝uegyetem rkp. 3., H-1111 Budapest, Hungary

     

  • I. Varjasi

     

     Department of Automation and Applied Informatics, Faculty of Electrical Engineering and Informatics, Budapest

    University of Technology and Economics, M˝uegyetem rkp. 3., H-1111 Budapest, Hungary

Published

2024-01-08

Issue

Section

Articles