Neutral-point voltage control for a three-level DC-AC inverter using equivalent-input-disturbance approach

Jie Zhang, Ryuichi Yokoyama, Jinhua She

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

2 Citations (Scopus)

Abstract

One problem with a single-voltage source, three-level inverter is the drafting of its neutral-point voltage. This may occur during transition or when unbalanced loads are connected to the inverter system. Variation of neutral-point voltage may greatly deteriorate the power quality. In this paper, we employ an equivalent-input-disturbance approach to deal with this problem. By adding an extra neutral leg, the control problem of neutralpoint voltage is converted to a disturbance rejection problem. This method suppresses the variation of the neutral-point voltage to a small level and reduces the capacity of capacitors. Simulation results show the effectiveness of the method.

Original languageEnglish
Title of host publicationProceedings - 2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2012
Pages398-402
Number of pages5
DOIs
Publication statusPublished - 2012
Event2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2012 - Aalborg
Duration: 2012 Jun 252012 Jun 28

Other

Other2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2012
CityAalborg
Period12/6/2512/6/28

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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