Electric propulsion with the sensorless permanent magnet synchronous motor: Model and approach

Todd D. Batzel, Kwang Y. Lee

Research output: Contribution to journalArticle

62 Scopus citations

Abstract

In this paper, a rotor position estimator for the sensorless permanent magnet synchronous motor (PMSM) is developed. The proposed approach exploits the time-scale separation between the electrical and mechanical time constant of the PMSM to formulate a linear observer. The observer produces accurate rotor angle estimates in steady-state and transient, and is attractive for electric propulsion applications due to its independence from mechanical parameters such as load torque, inertia, and friction. The sensorless strategy is well-suited to the nonsaturating slotless PMSM, but the demonstrated robustness of the observer to modeling uncertainties allows for application to slotted construction as well. Experiments are conducted to confirm the effectiveness of the proposed approach.

Original languageEnglish (US)
Pages (from-to)818-825
Number of pages8
JournalIEEE Transactions on Energy Conversion
Volume20
Issue number4
DOIs
StatePublished - Dec 2005

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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