Title :
Influence of parameters on performance of permanent magnet brushless DC motor with the air-cored stator
Author :
Wang, Huijun ; Zhou, Guangxu ; Xie, Zhaoyan ; Song, Sensen
Author_Institution :
Sch. of Instrum. Sci. & Opto-Electron. Eng., Beijing Univ. of Aeronaut. & Astronaut., Beijing, China
Abstract :
The airgap magnetic field distribution and back-emf waveform are analyzed from the 3-D finite element models of the permanent magnet brushless DC (BLDC) motor with air-cored stator. The influence of magnet thickness, length of airgap and outer diameter of the rotor on the performance is investigated. It can be found that waveform of back-emf can be improved to reach flat roof width with 120° electrical degrees by means of increasing the airgap diameter. Analytical results are verified by the experiments of the prototype motor.
Keywords :
brushless DC motors; electric potential; finite element analysis; machine theory; magnetic fields; permanent magnet motors; stators; 3D finite element model; air cored stator; airgap magnetic field distribution; back EMF waveform; permanent magnet brushless DC motor; Brushless motors; Permanent magnet motors; Permanent magnets; Rotors; Stator cores; Torque;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2010 International Conference on
Conference_Location :
Incheon
Print_ISBN :
978-1-4244-7720-3
