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Analytic investigation on commutation angle of brushless DC motors with 120° voltage source inverter

  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Commutation angle is a key design criterion when brushless DC (BLDC) motors sensorlessly operate based on the detection of back electromotive force (EMF) zero-crossing and must be designed significantly less than 30 electrical degree. The paper describes a detailed investigation on the commutation angle of brushless DC motors with 120° voltage source inverter. Analytic method is applied to analyze the influence factors. The proposed design principles can provide a clear guide for the adjustment of system parameters. Then two criteria and an estimation method based on approximate anlytical solution of commutation angle are presented with experimental validation.

Original languageEnglish
Pages (from-to)219-225
Number of pages7
JournalInternational Journal of Applied Electromagnetics and Mechanics
Volume45
Issue number1-4
DOIs
StatePublished - 2014

Keywords

  • 120° voltage source inverter
  • Commutation angle
  • analytic analysis
  • brushless DC motor
  • criteria

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