Comparison Analysis of Demagnetization and Torque Ripple in Accordance With Freewheeling Current in PM BLDC Motor

Author

Hyung-Kyu Kim ; Jong-hun Park ; Jin Hur

Author_Institution

Sch. of Electr. Eng., Univ. of Ulsan, Ulsan, South Korea

Volume

51

Issue

11

fYear

2015

Firstpage

1

Lastpage

4

Abstract

In this paper, we compared and analyzed the changes of demagnetization under fault condition and commutation torque ripple. Changes of freewheeling current (FC) are analyzed in accordance with speeds. Commutation torque ripple is analyzed in the FC section. In addition, change of demagnetization phenomenon is analyzed through change of flux density according to change of FC. Consequentially, we studied reliability and stability through changes of demagnetization and commutation torque ripple.

Keywords

brushless DC motors; demagnetisation; electrical faults; permanent magnet motors; torque; brushless DC motor; commutation torque ripple; demagnetization changes; fault condition; freewheeling current changes; permanent magnet BLDC motor; Brushless DC motors; Commutation; Demagnetization; Magnetic fields; Torque; Brushless DC motor; Brushless dc (BLdc) motor; commutation torque ripple; demagnetization; freewheeling current; freewheeling current (FC); inter turn fault; interturn fault (ITF);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2015.2433933

Filename

7109169