A new control method of a current balancer in single-phase three-wire secondary distribution systems using the correlation and cross-correlation coefficients

Hirokazu Fukui, Eiji Hiraki, Toshihiko Tanaka

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

Abstract

This paper proposes a new control method of a current balancer for single-phase three-wire secondary distribution systems using the correlation and cross-correlation coefficients to reduce the capacity of the three-leg PWM inverter, which performs the current balancer. The components correlative and cross-correlative to the primary side voltage waveform, which correspond to the active and reactive currents, are calculated from the detected load currents on each feeder. Then the reactive and unbalanced-active currents are compensated on the source side. The balanced source currents with the power factor of 0.9 are obtained in each feeder. This imperfect compensation of the reactive power reduces the capacity of both the threeleg PWM inverter and dc capacitor. The basic principle of the proposed method is discussed in detail, and then confirmed by digital computer simulation. A proto-type experimental system is constructed and tested. Experimental results demonstrate that the balanced source currents with the power factor of 0.9 are obtained in spite of unbalanced load currents reducing the capacity of the three-leg PWM inverter.

Original languageEnglish
Title of host publicationProceedings - 34th Annual Conference of the IEEE Industrial Electronics Society, IECON 2008
PublisherIEEE Computer Society
Pages2267-2272
Number of pages6
ISBN (Print)9781424417667
DOIs
Publication statusPublished - Jan 1 2008
Externally publishedYes

Publication series

NameIECON Proceedings (Industrial Electronics Conference)

Keywords

  • Active-reactive current
  • Correlation coefficient
  • Crosscorrelation
  • Current balancer
  • Single-phase three-wire secondary distribution system
  • Three-leg inverter
  • Unbalanced condition

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'A new control method of a current balancer in single-phase three-wire secondary distribution systems using the correlation and cross-correlation coefficients'. Together they form a unique fingerprint.

  • Cite this

    Fukui, H., Hiraki, E., & Tanaka, T. (2008). A new control method of a current balancer in single-phase three-wire secondary distribution systems using the correlation and cross-correlation coefficients. In Proceedings - 34th Annual Conference of the IEEE Industrial Electronics Society, IECON 2008 (pp. 2267-2272). [4758310] (IECON Proceedings (Industrial Electronics Conference)). IEEE Computer Society. https://doi.org/10.1109/IECON.2008.4758310