Modified Modulated Model Predictive Control Strategy for a Grid-Connected Converter

Dan Xiao, Kazi Saiful Alam, Margarita Norambuena, Muhammed Fazlur Rahman, Jose Rodriguez

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

This article proposes a modified modulated model predictive control (M3PC) for a grid-connected converter, which features enhanced steady-state and transient performance, low complexity, and capability of multiobjective optimization. The advantages of fast dynamics and inherent overmodulation capability of finite control set model predictive control are preserved while a constant switching-frequency and improved steady-state performance are achieved. High tracking error and distortion caused by the limitation of conventional modulated model predictive control (M2PC) optimization near the hexagonal limit of voltage vectors and the sector boundaries are addressed with the proposed M3PC scheme. Experimental results verify that reduced tracking errors and lower total-harmonic distortion in grid current are achieved by the proposed method compared to the conventional M2PC scheme. It is also confirmed that the capability of overmodulation operation in the proposed method enhances transient performance and dc-bus utilization.

Original languageEnglish
Article number8960539
Pages (from-to)575-585
Number of pages11
JournalIEEE Transactions on Industrial Electronics
Volume68
Issue number1
DOIs
Publication statusPublished - Jan 2021

Keywords

  • Constant switching frequency
  • grid-connected converter
  • overmodulation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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