A half-bridge inverter based current balancer with the reduced DC capacitors in single-phase three-wire distribution feeders

Yusuke Baba, Masayuki Okamoto, Eiji Hiraki, Toshihiko Tanaka

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

6 Citations (Scopus)

Abstract

This paper proposes a half-bridge inverter based current balancer in single-phase three-wire distribution systems with the reduced dc capacitors. The proposed current balancer can use a 6-in-1 IGBT module. Two legs perform a half-bridge inverter based current balancer, which compensates the reactive and unbalanced active components on the source-side. The third-leg performs a power de-coupler with a dc-capacitor voltage balancer. This power de-coupler sinks the power fluctuation, which flows into the dc capacitors, caused by the unbalanced conditions of two half-bridge inverters. Thus the capacity of the dc capacitors of the half-bridge inverter based current balancer can be dramatically reduced as compared to those of the previously proposed current balancer. The basic principle of the proposed half-bridge inverter based current balancer with the reduced dc capacitors is discussed in detail, and then confirmed by digital computer simulation using PSIM software. A prototype experimental model is constructed and tested. Experimental results demonstrate that the balanced source currents are obtained on the secondary-side of the pole-mounted distribution transformer, reducing the capacity of the dc capacitors of the half-bridge inverter based current balancer.

Original languageEnglish
Title of host publicationIEEE Energy Conversion Congress and Exposition
Subtitle of host publicationEnergy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings
Pages4233-4239
Number of pages7
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011 - Phoenix, AZ, United States
Duration: Sep 17 2011Sep 22 2011

Publication series

NameIEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings

Other

Other3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011
CountryUnited States
CityPhoenix, AZ
Period9/17/119/22/11

Keywords

  • current balancer
  • dc-capacitor voltage balancer
  • half-bridge inverter
  • power de-coupler
  • single-phase PLL circuit
  • single-phase dq transformation
  • single-phase three-wire distribution system

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

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