A novel sensorless initial rotor position estimation method for permanent magnet synchronous motors

Chien Feng Wu, Shir-Kuan Lin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This paper presents a high efficiency initial rotor position estimation method for Permanent Magnet Synchronous Motors (PMSM). The approach uses the viable inductance model to analyze the optimal motor injection sine wave frequency as the motor’s test signal. Unlike other high-frequency injection methods, this approach does not require trial and error experiments. The injection frequency is identified by programmable simulations using Matlab. Experimental evaluation of 3-phase PMSM showed that this injection frequency optimization method works successfully. The proposed method can find the optimal injection frequency without experimentation, and outperforms other test signals in terms of accuracy, vibration quantity and noise. This microprocessor-developed 3-phase PMSM control driver can be applied to electrical appliances, machine tools and automation.

Original languageEnglish
Pages (from-to)156-166
Number of pages11
JournalInternational Journal of Power Electronics and Drive Systems
Volume8
Issue number1
DOIs
StatePublished - 1 Jan 2017

Keywords

  • High frequency signal injection
  • Initial rotor position estimation
  • Optimal injection frequency
  • PMSM

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