Method for Estimating Low-Frequency Return Current of DC Electric Railcar

• Hatsukade Satoru

  Railway Technical Research Institute

Bibliographic Information

Other Title

• 直流電車帰線電流の低周波成分推定方法
• チョクリュウ デンシャキセン デンリュウ ノ テイシュウハ セイブン スイテイ ホウホウ

Abstract

The Estimation of the harmonic current of railcars is necessary for achieving compatibility between train signaling systems and railcar equipment. However, although several theoretical analyses methods for estimating the harmonic current of railcars using switching functions exist, there are no theoretical analysis methods estimating a low-frequency current at a frequency less than the power converter's carrier frequency. This paper describes a method for estimating the spectrum (frequency and amplitude) of the low-frequency return current of DC electric railcars. First, relationships between the return current and characteristics of the DC electric railcars, such as mass and acceleration, are determined. Then, the mathematical (not numerical) calculation results for low-frequency current are obtained from the time-current curve for a DC electric railcar by using Fourier series expansions. Finally, the measurement results clearly show the effectiveness of the estimation method development in this study.

Journal

• IEEJ Transactions on Industry Applications

  IEEJ Transactions on Industry Applications 131 (2), 187-193, 2011

  The Institute of Electrical Engineers of Japan

Keywords

• EMC
• DC railcar
• return current
• track circuit

Details

• CRID: 1390282679635295232
• NII Article ID: 10027804807
• NII Book ID: AN10012320
• DOI: 10.1541/ieejias.131.187
• ISSN: 13488163
• ISSN: 09136339
• NDL BIB ID: 10952503
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10952503
• Web Site: https://www.jstage.jst.go.jp/article/ieejias/131/2/131_2_187/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed