Design of an Outer Rotor DC-Excited Flux Switching Motor for Light Electric Motorcycle

• Main Authors: Yan-Zhen Tsai, 蔡炎臻
• Other Authors: 楊勝明
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/5e2yk6

碩士 === 國立臺北科技大學 === 電機工程系所 === 102 === The operation principle of the DC excitation flux switching motor is similar to that for the wound rotor synchronous motor. Both of them have the AC armature and DC magnetic windings. However, the DC windings of the DC excitation flux switching motor are placed on the stator, and the rotor is the salient structure. Because the DC windings are on the stator, it is quite easy for the DC excitation flux switching motor to control under the flux-weakening region. In addition, the robust rotor structure without magnets is quite suitable for the application of electric vehicles.This thesis focuses on the design of outer rotor DC excitation flux switching motor for the application of light-weight electric motorcycles. The specifications are determined according to those sponsored by the government for light-weight electric motorcycles. Specific torque-speed curve analysis is done at the beginning of the design approach. The finite element analysis method is used to compare the numbers of slots and the poles, and make the preliminary design according to the size of the exterior appearance. And then use the sensitivity analysis to determine the suitable parameters to improve the design of the exterior appearance of the rotor to obtain the best efficiency and minimum torque ripple. Except the analysis and simulations, prototype of the motor is also made to verify if the simulation is agrees with the design.