Calculation of current total harmonic distortion for a three-phase two-level inverter with LCL-filter

Ramazan Abdikarimuly, Alex Ruderman, Boris Reznikov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This paper addresses calculation of current Total Harmonic Distortion (THD) for a three-phase two-level PWM inverter with an LCL-filter. Analytical approach introduced in late 1980s for a two-level inverter with inductance dominated load is generalized accounting for the smoothing effect of an LCL-filter. Though the obtained closed-form analytical solutions initially assume (infinitely) large ratio of switching and fundamental frequencies, they are practically accurate for the ratios of (apparent) switching and fundamental frequencies larger than 25-30. The formulas reveal a three-phase two-level PWM inverter current THD dependence on LCL-filter parameters and modulation index and can be easily modified to cover a grid-connected inverter case.

Original languageEnglish
Title of host publicationProceedings - 2017 19th International Conference on Electrical Drives and Power Electronics, EDPE 2017
PublisherKoREMA
Pages100-105
Number of pages6
Volume2017-October
ISBN (Electronic)9781538633809
DOIs
Publication statusPublished - Nov 27 2017
Event19th International Conference on Electrical Drives and Power Electronics, EDPE 2017 - Dubrovnik, Croatia
Duration: Oct 4 2017Oct 6 2017

Conference

Conference19th International Conference on Electrical Drives and Power Electronics, EDPE 2017
CountryCroatia
CityDubrovnik
Period10/4/1710/6/17

Keywords

  • Grid-Connected Inverter
  • LCL-Filter
  • Multilevel Inverter
  • Pulse Width Modulation
  • Total Harmonic Distortion

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering

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