Stator design consideration of a brushless DC motor for robust rotor position detection in inductive sense start-up

This paper presents a method to improve three-phase brushless DC (BLDC) motor design for easier application of inductive sense start-up algorithms. Using the experimental results of motor start-up, a failure analysis of the successful and unsuccessful motors identifies the root cause of failure. The...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:IEEE transactions on magnetics 2006-03, Vol.42 (3), p.453-459
1. Verfasser: YOON, Taeyong
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:This paper presents a method to improve three-phase brushless DC (BLDC) motor design for easier application of inductive sense start-up algorithms. Using the experimental results of motor start-up, a failure analysis of the successful and unsuccessful motors identifies the root cause of failure. The unsuccessful motors had smaller inductance difference when energized by a positive test current than when energized by a negative test current. Finite-element method (FEM) analysis then is used to examine the effect of the stator geometry on the sensitivity of the inductance to the permanent magnet polarity. A modified stator design is obtained through FEM study. The performance improvement is verified by current rise simulation.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2005.863271