Title :
Core shape optimization for cogging torque reduction of BLDC motor
Author :
Han, Ki-Jin ; Cho, Han-Sam ; Cho, Dong-Hyeok ; Cho, Hyun-Rae ; Lee, Hae-Seok ; Jung, Hyun-Kyo
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
The cogging torque in the small brushless DC (BLDC) motors used in the digital versatile disk (DVD) driving system or hard disk drive (HDD) system can cause some serious vibration problems. In this paper, some core shapes that reduce cogging torque are found by using a reluctance network method (RNM) for magnetic field analysis and a genetic algorithm (GA) for optimization. The outer rotor type BLDC motor for the DVD ROM driving system has been optimized as an sample model
Keywords :
brushless DC motors; disc drives; genetic algorithms; machine theory; magnetic cores; magnetic fields; small electric machines; torque; cogging torque reduction; core shape optimization; core shapes; digital versatile disk; genetic algorithm; hard disk drive; magnetic field analysis; optimization; reluctance network method; small brushless DC motor; vibration problems; Brushless DC motors; Brushless motors; DC motors; DVD; Forging; Hard disks; Magnetic cores; Reluctance motors; Shape; Torque;
Conference_Titel :
Electric Machines and Drives, 1999. International Conference IEMD '99
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5293-9
DOI :
10.1109/IEMDC.1999.769132
