Title :
Optimum design of magnet shape in permanent-magnet synchronous motors
Author :
Li, Yong ; Zou, Jibin ; Lu, Yongping
Author_Institution :
Dept. of Electr. Eng., Harbin Inst. of Technol., China
Abstract :
In order to improve the efficiency of the permanent-magnet synchronous motor, which is closely related to its magnet shape, we have designed magnets in various shapes. A parallel top sine wave design has proved to be an optimum plan. This design adds three time components of induced phase voltage, which enables the amplitude of induced line voltage to increase about 14.9%. The design´s simplified approximate arc configuration has important engineering applications.
Keywords :
brushless DC motors; optimisation; permanent magnet motors; permanent magnets; synchronous motors; BLDCM; PMSM; approximate arc configuration; brushless DC motors; induced line voltage amplitude; induced phase voltage time components; motor efficiency; optimum magnet shape design; parallel top sine wave design; permanent-magnet synchronous motors; Brushless DC motors; DC motors; Magnetic fields; Magnetic flux; Permanent magnet motors; Servomotors; Shape; Synchronous motors; Torque; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.819462
