Application of Speed and Load Torque Observers in High-Speed Train Drive for Diagnostic Purposes

Jaroslaw Guzinski, Zbigniew Krzeminski, Arkadiusz Lewicki, Marc Diguet, Haitham Abu-Rub

Research output: Contribution to journalArticle

81 Citations (Scopus)


In this paper, an application of speed and load torque observers is presented. The aim of the observer implementation is to be used in the diagnostic system for a motor speed sensor and a torque transmission system. The diagnostic system is dedicated to the high-speed train propelled by an induction motor. An analysis of the observed variables allows the identification of problems in the mechanical part of the main traction drive. For example, in the case of speed sensor faults, the motor control system could be switched into speed-sensorless control. The proposed observers were verified by simulation and on a test bench for 1.2-MW rail vehicle motor used in high-speed trains.

Original languageEnglish
Pages (from-to)248-256
Number of pages9
JournalIEEE Transactions on Industrial Electronics
Issue number1
Publication statusPublished - 2009



  • Fault prediction
  • high-speed train (HST)
  • induction motor
  • load torque observer
  • speed observer

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

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