A novel single-phase voltage sag restorer with diode-clamped multilevel bridge

K. Ding, Ka Wai Eric Cheng, X. D. Xue, B. P. Divakar S, X. Wang, C. D. Xu, D. H. Wang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

A novel single-phase voltage sag restorer with diode-clamped multilevel bridge is presented. In the proposed circuit, traditional two-level half bridge inverter is replaced by multilevel diode-clamped inverter, in which the dc-bus voltage is split into several levels by series-connected bulk capacitors. Although the multilevel circuit has more component count than the two-level circuit it is more suitable for high voltage applications. The restorer is bypassed under normal operating conditions and is connected to the load depending upon voltage sag detection. The switches of the inverter are controlled by PWM signals. In the paper the operation of the multilevel circuit is simulated in SABER to study the operating capability of the multilevel inverter. A comparative study between the traditional two-level circuit and the proposed multilevel circuit is provided to highlight the performance of the multilevel circuit.
Original languageEnglish
Title of host publication2009 3rd International Conference on Power Electronics Systems and Applications, PESA 2009
Publication statusPublished - 4 Nov 2009
Event2009 3rd International Conference on Power Electronics Systems and Applications, PESA 2009 - Hong Kong, Hong Kong
Duration: 20 May 200922 May 2009

Conference

Conference2009 3rd International Conference on Power Electronics Systems and Applications, PESA 2009
CountryHong Kong
CityHong Kong
Period20/05/0922/05/09

Keywords

  • Diode-clamped
  • Multilevel
  • Power interruption
  • Power system
  • Voltage sag

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this