A high-efficiency electric motor with direct-drive feature for electric vehicles

• Main Author: Low, Rommel Zhen Long
• Other Authors: Christopher H. T. Lee
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2023
• Subjects: Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/167427
• Institution: Nanyang Technological University

This is a Final Year Project; Develop a high-efficiency direct-drive machine for electric vehicles (EVs). With the elimination of mechanical gearboxes, the emerging direct-drive vernier machines have been attracting attention in EV applications, offering high power/torque densities, robust structure, and maintenance-free operation. However, there exist abundant magnetic field harmonics in vernier machines due to the special working principle, which will induce excessive losses and deteriorate efficiency. To reduce the operation cost and fulfill the efficiency requirements of IE4 and the US Department of Energy (DOE), this project inspires students to develop a high-efficiency direct-drive electric motor for EVs based on comprehensive design, analysis, simulation, and evaluation. Exceptional designs can be made with J-MAG Designer Software as experimental prototypes for concept verification.