Design and Analysis of a Fractional-Slot Concentrated Surface Permanent Magnet Brushless Motor for Electric Vehicle Applications

• Main Authors: JHIH-SIANG SYU, 許智翔
• Other Authors: CHANG-CHUN HWANH
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/83499425490622349056

碩士 === 逢甲大學 === 電機工程學系 === 104 === This thesis describes the design and analysis of a 14-pole/12-slot fractional-slot concentrated winding surface permanent magnet motor for electric vehicle applications to satisfy the torque-speed operating range against the New European Driving Cycle (NEDC) and thermal constraints. The specifications of the motor is three-phase, 5 kW at a rated speed of 1350 rpm. The prototype design of the motor is done with the aid of magnetic circuit design software, SPEED, and electromagnetic field analysis based on finite element method software, Flux2D. Results from this study shows that the machine with single-layer winding has higher performance characteristics and is selected for the following study. A sensitivity analysis, Taguchi method and fuzzy Taguchi method is used to the optimal design of the motor for maximum both efficiency and the torque per unit magnet volume and minimum the torque ripple. Finally, a mechanical and a thermal analysis of the motor are also investigated and discussed in this thesis.