Topology for current balancer with half-bridge inverters in single-phase three-wire distribution systems with DC-capacitor-voltage balancer

Yusuke Baba, Kazuya Sugahara, Masayuki Okamoto, Eiji Hiraki, Toshihiko Tanaka

Research output: Contribution to journalArticle

Abstract

This paper proposes a new topology for a current balancer with half-bridge inverters in single-phase threewire distribution systems. Two half-bridge inverters are connected to the sources. The midpoint of the two capacitors on the DC-side is connected to a neutral line. The two half-bridge inverters function as a current balancer for single-phase three-wire distribution systems by exchanging the active and reactive power on each feeder through the two DC capacitors. The third leg functions as a DC-capacitor-voltage balancer for two DC capacitors connected to the half-bridge inverters. Thus, balanced source voltages andcurrents are obtained on the secondary side on the polemounted distribution transformer with balanced DC-capacitor voltages. The basic principle of the proposed current balancer is discussed in detail, and then confirmed by digital computer simulation using PSIM software. A prototype experimental model is constructed and tested. Experimental results show that balanced source voltages and currents are obtained on the secondary side on the polemounted distribution transformer with balanced DC-capacitor voltages.

Original languageEnglish
Pages (from-to)38-46
Number of pages9
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Volume180
Issue number4
DOIs
Publication statusPublished - Sep 1 2012
Externally publishedYes

Keywords

  • Correlation coefficient
  • Cross-correlation coefficient
  • Current balancer
  • DC-capacitor-voltage balancer
  • Half-bridge inverter
  • Single-phase three-wire distribution systems

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Topology for current balancer with half-bridge inverters in single-phase three-wire distribution systems with DC-capacitor-voltage balancer'. Together they form a unique fingerprint.

  • Cite this