Overmodulation Methods for Modulated Model Predictive Control and Space Vector Modulation

Ali Sarajian, Cristian F. Garcia, Quanxue Guan, Patrick Wheeler, Davood Arab Khaburi, Ralph Kennel, Jose Rodriguez, Mohamed Abdelrahem

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A two-level voltage source inverter (2L-VSI) when working under overmodulation regulation potentially has low performance, especially during large reference or load changes. To address this problem, a new calculation method is proposed in this article by determining a new reference vector from the boundary of linear-modulation zone as a best vector. The reference vector is synthesized by one or two vectors on the boundary line. Therefore, this technique simplifies the calculations to obtain the duty cycles and uses these duty cycles to identify the overmodulation zones. The proposed method is applied to the modulated model predictive control (MMPC) and the space vector modulation, respectively, in a 2L-VSI. A comprehensive assessment mathematically proves that both methods are in consistence with each other. Simulations and experiments are carried out to show that the proposed methods can reduce the computational burden and implementation complexity and improve the performance of the 2L-VSI in terms of fast dynamic response and smooth transition between the linear-modulation zone and overmodulation zone.

Original languageEnglish
Article number9199119
Pages (from-to)4549-4559
Number of pages11
JournalIEEE Transactions on Power Electronics
Volume36
Issue number4
DOIs
Publication statusPublished - Apr 2021

Keywords

  • Linear-modulation zone
  • modulated model predictive control (MMPC)
  • overmodulation zone
  • voltage source inverter (VSI)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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