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Performance Comparison of Single-Phase Multilevel Inverter with SPWM Unipolar and Bipolar Switching Techniques

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Abstract

Sinusoidal Pulse Width Modulation (SPWM) method is one of the Pulse Width Modulation (PWM) switching techniques which is working by comparing the sinusoidal reference signal to a triangular carrier signal. The SPWM switching technique can be implemented using either unipolar or bipolar technique. This paper discusses the performance comparison of 5-level and 7-level single-phase cascade H-bridge multilevel inverters using SPWM unipolar and bipolar switching methods. The study results show that increasing the level of a single-phase multilevel inverter circuit can effectively reduce the harmonic distortion. The SPWM unipolar signal switching technique also produces lower values of Total harmonic Distortion (THD) than the use of bipolar technique. Higher the switching frequency and modulation index used, smaller will be the harmonic distortion.

Original languageEnglish
Title of host publicationProceeding - 1st FORTEI-International Conference on Electrical Engineering, FORTEI-ICEE 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages102-107
Number of pages6
ISBN (Electronic)9781728194349
DOIs
Publication statusPublished - 23 Sept 2020
Event1st FORTEI-International Conference on Electrical Engineering, FORTEI-ICEE 2020 - Virtual, Bandung, Indonesia
Duration: 23 Sept 202024 Sept 2020

Publication series

NameProceeding - 1st FORTEI-International Conference on Electrical Engineering, FORTEI-ICEE 2020

Conference

Conference1st FORTEI-International Conference on Electrical Engineering, FORTEI-ICEE 2020
Country/TerritoryIndonesia
CityVirtual, Bandung
Period23/09/2024/09/20

Keywords

  • bipolar switching
  • cascade inverter
  • H-bridge
  • multilevel inverter
  • SPWM
  • unipolar switching

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