Title :
Low cogging torque and high efficient 3-phase spindle motors by reshaping magnetic circuit profiles
Author :
Chiu, Kuo-Chi ; Huang, Der-Ray ; Shieh, Han-Ping D.
Author_Institution :
Inst. of Electro-Opt. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
7/1/2001 12:00:00 AM
Abstract :
The dynamic characteristics of a 3-phase spindle motor with 12-poles and 9-slots can be improved by reshaping the magnetic circuit profiles. The stator cores were designed with different ratios of x/y where x is the gap angle between 2-slots and y is the expanded angle of a slot. Experiment and finite element analyses (FEA) results show that x/y ratio of 1/2.5 is an optimal design in achieving dynamic performance for DVD drives applications
Keywords :
brushless machines; finite element analysis; magnetic circuits; magnetic cores; small electric machines; stators; torque; DVD drive; cogging torque; dynamic characteristics; efficiency; finite element analysis; magnetic circuit; stator core; three-phase spindle motor; DVD; Finite element methods; Forging; Magnetic analysis; Magnetic circuits; Magnetic flux leakage; Rotors; Stator cores; Torque; Vibration measurement;
Journal_Title :
Magnetics, IEEE Transactions on
