Direct Active-Balancing Control of Flying-Capacitor Voltages in an ANPC-Based Multilevel Inverter

Vahid Dargahi, Arash Khoshkbar Sadigh

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

Abstract

An active balancing technique for the direct voltage control of flying-capacitors within a hybrid multilevel inverter is explored and experimentally verified in this paper. This method employs a set of logical variables that are derived from voltage and current measurements obtained from the floating-capacitors and inverter's ac stage, respectively. The ultimate logic-equations take the redundant switching states for each voltage-level of the adopted pulse-width-modulator into consideration, and feature prominent advantages such as a fixed-switching frequency, super fast execution-time, and ease of implementation for the industrial applications of multilevel inverters. The introduced technique is exploited for an active voltage control of a 7-level hybrid inverter which is realized from a cascaded connection of ANPC topology and two H-bridge modules. The provided experimental results validate the logic-equations and its cost-function elimination basis and optimization-free approach.

Original languageEnglish (US)
Title of host publication2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3020-3026
Number of pages7
ISBN (Electronic)9781728151359
DOIs
StatePublished - 2021
Event13th IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Virtual, Online, Canada
Duration: Oct 10 2021Oct 14 2021

Publication series

Name2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings

Conference

Conference13th IEEE Energy Conversion Congress and Exposition, ECCE 2021
Country/TerritoryCanada
CityVirtual, Online
Period10/10/2110/14/21

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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