Title :
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
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);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2433933
