A constant DC voltage control based compensation method of an active power quality compensator for electrified railways

Toshihiko Tanaka, Norio Ishikura, Eiji Hiraki

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper proposes a novel and simple control method for the active power quality compensators (APQCs) used in electrified railways. The proposed method uses only the constant dc capacitor voltage control block, which is commonly used in the APQCs. No detection blocks of the harmonic, reactive, and negative-sequence components are necessary. Thus we offer the simplest way to compensate the harmonic, reactive, and negative-sequence currents on the primary side of the Scott transformer in the traction substation. The basic principle of the proposed control method 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 with the unity power factor are obtained on the primary side with the proposed control method, which uses only the constant dc capacitor voltage control.

Original languageEnglish
Pages (from-to)435-441
Number of pages7
JournalIEEJ Transactions on Electrical and Electronic Engineering
Volume4
Issue number3
DOIs
Publication statusPublished - May 2009
Externally publishedYes

Keywords

  • Active power quality compensator
  • Constant dc capacitor voltage control
  • Electrified railway
  • Scott transformer
  • Three-leg inverter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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