Improved mutual voltage technique of indirect rotor position sensing in switched reluctance motor

H. P. Chi, T. J. Liang, C. L. Chu, J. F. Chen, M. T. Chang

Research output: Contribution to journalConference article

5 Citations (Scopus)


This paper describes a new method for indirect rotor position sensing for switched reluctance motors (SRMs). The method performs well in the pulse width modulated (PWM) region and is applicable to both hard chopping and soft chopping. The proposed method suitably samples two mutually induced voltages on an inactive phase, and the difference of these two voltages is used to compute the ratio of mutual inductance to self-inductance. Then, this signal can be used to estimate easily the shaft position. Simulated results validate the theoretical analysis and demonstrate the successful sensorless position sensing of the SRM.

Original languageEnglish
Pages (from-to)271-275
Number of pages5
JournalPESC Record - IEEE Annual Power Electronics Specialists Conference
Publication statusPublished - 2002 Jan 1
Event2002 IEEE 33rd Annual Power Electronics Specialists Conference (PESC) - Cairns, Australia
Duration: 2002 Jun 232002 Jun 27


All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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