Title :
Effect of Armature Reaction and Skewing on the Performance of Radial-flux Permanent Magnet Brushless DC Motor
Author :
Upadhyay, Parag ; Rajagopal, K.R.
Author_Institution :
Electr. Eng. Dept., Nirma Univ. of Sci. & Technol., Ahmedabad
Abstract :
In this paper the effect of armature reaction and skewing on the performance of a 70 W, 24 V, 350-rpm surface mounted radial-flux permanent magnet brushless DC (PM BLDC) motor is presented. The net reduction in peak torque of the motor due the effect of armature reaction is only 2.8%. The rate of reduction in airgap flux density because of the armature reaction is 5.59 mT/A from no-load to full-load. The 2D Finite element (FE) results are exploited for the analysis of skewing. The percentage torque ripple is reduced from 24% to 13.63% and 7.07% for the half and full slot pitch skewing respectively.
Keywords :
brushless DC motors; finite element analysis; magnetic flux; permanent magnet motors; torque; 2D finite element; FE; PM BLDC motor; airgap flux density reduction; armature reaction; peak torque reduction; radial-flux permanent magnet brushless DC motor; skewing; Armature; Brushless DC motors; Brushless motors; DC motors; Magnetic flux; Magnetic materials; Permanent magnet motors; Reluctance motors; Saturation magnetization; Soft magnetic materials; Armature reaction; Brushless Motor; FE Analysis; Motor; PM BLDC Motor; Permanent Magnet Motor; Skewing;
Conference_Titel :
Power Electronics, Drives and Energy Systems, 2006. PEDES '06. International Conference on
Conference_Location :
New Delhi
Print_ISBN :
0-7803-9772-X
Electronic_ISBN :
0-7803-9772-X
DOI :
10.1109/PEDES.2006.344368
