Variable-and Fixed-Switching-Frequency-Based HCC Methods for Grid-Connected VSI with Active Damping and Zero Steady-State Error

Hasan Komurcugil, Sertac Bayhan, Haitham Abu-Rub

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

This paper presents variable-and fixed-switching-frequency-based hysteresis current control (HCC) methods for single-phase grid-connected voltage-source inverters with LCL filter. The main feature of the proposed HCC methods is that the reference inverter current is generated through a proportional-resonant (PR) controller for achieving zero steady-state error in the grid current. The consequence of using the PR controller is eliminating the need for using derivative operations in generating the reference inverter current. Furthermore, the active damping method is employed to damp the LCL resonance. An equation is derived for variable-switching frequency. Fixed-switching frequency operation is achieved by modulating the hysteresis band. The performance of both HCC methods has been validated by simulation and experimentally. It is reported that the proposed HCC methods not only preserve the inherent features of the conventional HCC methods, but also damp the LCL resonance using an active damping method and guarantee zero steady-state error in the grid current.

Original languageEnglish
Article number7885017
Pages (from-to)7009-7018
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Volume64
Issue number9
DOIs
Publication statusPublished - 1 Sep 2017

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Keywords

  • Fixed-switching frequency
  • grid-connected inverter
  • hysteresis current control (HCC)
  • variable-switching frequency

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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