Investigation and Comparative Analysis of Advanced PWM Techniques for Three-Phase Three-Level NPC-MLI Drives

Bharatiraja Chokkalingham, Sanjeevikumar Padmanaban, Frede Blaabjerg

Research output: Contribution to journalJournal articleResearchpeer-review

36 Citations (Scopus)

Abstract

The Multilevel inverter topologies (MLIs) are increasingly being used, which is the preferred choice in many industrial Medium-voltage (MV) applications. The inherent low switching frequency in medium voltage neutral point clamped MLI (NPC-MLI) fed industrial drives represent the power quality issues and filter-design challenges. In this paper, two multilevel pulse width modulation (PWM) methods; multi-carrier sine PWM (MCSPWM) and space vector PWM (SVPWM) has been considered for NPC-MLI. Both the methods are compared and analyzed based on different constraints such as voltage profile, total harmonic distortion (THD), common mode voltage (CMV) and neutral point fluctuation (NPF). The results convey that the SVPWM method is superior when compared with the MCSPWM algorithms. Analytical and simulation results achieved by using the MATLAB/Simulink for control systems are experimentally verified using FPGA-SPARTAN – III generation – 3AN –XC3S400 with a 2KW NPC-MLI fed adjustable speed – drive system.
Original languageEnglish
JournalElectric Power Components & Systems
Volume46
Issue number3
Pages (from-to)258-269
Number of pages12
ISSN1532-5008
DOIs
Publication statusPublished - Apr 2018

Keywords

  • Neutral point clamped MLI (NPC-MLI)
  • Multi-carrier sine PWM (MCSPWM
  • Space vector PWM (SVPWM)
  • Total harmonic distortion (THD)
  • Common mode voltage (CMV)
  • Neutral point fluctuation (NPF)

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