Computation Reduction for Balancing the Voltages of the DC-link Capacitors in 3-level Inverter by Using Redundant Switching States

Alireza Ja'afari, S. Alireza Davari, Cristian Garcia, Jose Rodriguez

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In finite set model predictive control (FS-MPC) the computational burden increases due to the placement of each of voltage vectors in the cost function. In addition, the higher the number of levels results in the higher the computation rate. For this reason, by reducing candidates number for the cost function, the computational burden can be reduced. On the other hand, in the structure of the neutral point clamped (NPC) inverter, it is necessary to maintain the voltage balance between the capacitors. Balancing methods also increase the computational burden by adding an extra term to the cost function. This paper states a method to reduce the computational burden of a three-level NPC inverter in which the voltage balance of the capacitors is also considered. To reduce the computational burden in this method, only three voltage vectors are included in the cost function. Redundancy states have also been used to balance the voltage of the capacitors. The proposed method is evaluated using simulation.

Original languageEnglish
Title of host publication2021 12th Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9780738111971
DOIs
Publication statusPublished - 2 Feb 2021
Event12th Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2021 - Tabriz, Iran, Islamic Republic of
Duration: 2 Feb 20214 Feb 2021

Publication series

Name2021 12th Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2021

Conference

Conference12th Power Electronics, Drive Systems, and Technologies Conference, PEDSTC 2021
Country/TerritoryIran, Islamic Republic of
CityTabriz
Period2/02/214/02/21

Keywords

  • capacitors voltage balance
  • computational burden
  • model predictive control (MPC)
  • multilevel inverter
  • neutral Point Clamped (NPC)

ASJC Scopus subject areas

  • Mechanical Engineering
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Computation Reduction for Balancing the Voltages of the DC-link Capacitors in 3-level Inverter by Using Redundant Switching States'. Together they form a unique fingerprint.

Cite this