A half-bridge inverter based active power quality compensator with a DC voltage balancer for electrified railways

Tint Soe Win, Yusuke Baba, Masayuki Okamoto, Eiji Hiraki, Toshihiko Tanaka

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

4 Citations (Scopus)

Abstract

This paper proposes a half-bridge inverter based Active Power Quality Compensator (APQC) with a DC voltage balancer for electrified railways. The APQC is composed of three-leg structured power devices with two common DC capacitors. The first two legs perform as two half-bridge inverters to generate compensation currents and the third-leg is used for DC voltage balancer. The first-leg is connected to β-phase and the second-leg is connected to α-phase. Two DC capacitors are connected in series and midpoint is grounded. These two half-bridge inverters exchange and balance active power for two feeders through two common DC capacitors and compensate reactive and harmonic components of the distorted load currents. The third-leg controls two common DC capacitors to balance voltage level of each other. Using proposed APQC, the primary side of Scott transformer attains balanced and sinusoidal source currents. The principle and control algorithm of proposed a half-bridge inverter based APQC is discussed in detail. The proposed APQC is confirmed by both the PSIM computer simulation software and prototype experiment system. Simulation results show that the proposed APQC can achieve balanced and sinusoidal source currents in secondary side of Scott transformer.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Power Electronics and Drive Systems
Pages185-190
Number of pages6
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event2011 IEEE 9th International Conference on Power Electronics and Drive Systems, PEDS 2011 - Singapore, Singapore
Duration: Dec 5 2011Dec 8 2011

Other

Other2011 IEEE 9th International Conference on Power Electronics and Drive Systems, PEDS 2011
CountrySingapore
CitySingapore
Period12/5/1112/8/11

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Keywords

  • active power quality compensator
  • constant dc capacitor voltage control
  • electrified railways
  • half-bridge inverter
  • three-leg inverter
  • voltage balancer

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Win, T. S., Baba, Y., Okamoto, M., Hiraki, E., & Tanaka, T. (2011). A half-bridge inverter based active power quality compensator with a DC voltage balancer for electrified railways. In Proceedings of the International Conference on Power Electronics and Drive Systems (pp. 185-190). [6147244] https://doi.org/10.1109/PEDS.2011.6147244