Calculation of Current Total Harmonic Distortion for a Single-Phase Current Source Multilevel Inverter

Mukhtar Turarbek, Alex Ruderman, Boris Reznikov

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

Abstract

The focus of this paper is a theoretical calculation of current Total Harmonic Distortion (THD) for a current source single-phase multilevel PWM inverter with CL-filter. Analytical approach to current ripple mean square/current THD calculation was introduced in the 1980s for a 2-level voltage source inverter with inductance dominated RL-load. This paper presents a generalization of this approach for a single-phase multilevel current source PWM inverter with an arbitrary number of current levels accounting for the CL-filter effect. The output of this research is a closed-form analytical current THD solution. Though one of the assumptions is large switching-to-fundamental frequencies ratio, the formulas are practically accurate for the said ratio larger than 20-25. The formulas become quite compact and simple without a loss of accuracy when using a Bessel function approximation. They demonstrate a single-phase PWM current source inverter current THD dependence on CL-filter parameters and current modulation index.

Original languageEnglish
Title of host publicationProceedings - 2020 IEEE 14th International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages249-254
Number of pages6
ISBN (Electronic)9781728142180
DOIs
Publication statusPublished - Jul 2020
Event14th IEEE International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2020 - Virtual, Online, Portugal
Duration: Jul 8 2020Jul 10 2020

Publication series

NameProceedings - 2020 IEEE 14th International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2020

Conference

Conference14th IEEE International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2020
CountryPortugal
CityVirtual, Online
Period7/8/207/10/20

Keywords

  • CL-Filter
  • Current Source Inverter
  • Grid-Tied Inverter
  • Pulse Width Modulation
  • Total Harmonic Distortion

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Science Applications
  • Software
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Media Technology
  • Health Informatics

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