Collaborative Research: Direct-drive Modular Transverse Flux Electric Machine without Using Rare-Earth Permanent Magnet Material

地球永磁材料摘要本研究的目的是开发紧凑，高转矩密度，节能，稀土材料的替代能源和运输应用的电机。该方法是使用的概念，横向磁通路径与非常规的“环”绕组，允许极数的增加，而不会减少每极的安培匝数。本研究的目标将通过电磁，结构和热设计，分析和优化，然后制造和测试一个50千瓦的原型电驱动器来实现。智力优势：所提出的横向磁通电机具有模块化结构，该模块化结构使用磁通聚焦技术来增加气隙磁通密度，而不必使用高磁通密度材料。杆的模块化允许机器的容易组装和可扩展性。每个模块或相位的双绕组为开发创新的控制方法打开了大门。 该结构具有定子铁芯利用率高、容错能力强等特点，是牵引电机和风力发电机非常需要的。更广泛的影响：该研究将建立高扭矩和功率密度电机的设计和设计方法，而不使用昂贵的稀土磁体材料。设计的实用和低成本机器将促进替代运输，并提高可再生能源收集技术的普及率。该研究将为美国在紧凑型高扭矩电机领域建立立足点，促进无齿轮机电系统。全面的教育计划建立在替代能源和交通的讲座和实验室模块将有助于培养许多研究生和本科生。

Earth Permanent Magnet MaterialAbstractThe objective of this research is to develop compact, high torque density, energy-efficient, rare-earth-material-free electric machines for alternative energy and transportation applications. The approach is to use the concept of transverse flux paths with the unconventional "ring" winding that allows the increase of pole numbers without the reduction of ampere-turn per pole. The goals of this research will be achieved through electromagnetic, structural and thermal design, analysis and optimization followed by fabrication and testing of a 50kW prototype electric drive. Intellectual Merit: The proposed transverse flux machine has a modular structure that uses the flux focusing technique to increase air-gap flux density without having to use high flux density materials. The modularity of poles allows for easy assembly and scalability of the machine. The double windings per module or phase open the door for developing innovative control methodologies. The structure has high stator core utilization, and high fault tolerance capability, which are highly desirable features in traction machines and wind generators. Broader Impacts: The research will establish designs and design methodologies for high torque and power density electric machines without using expensive rare-earth magnet materials. The practical and lower cost machines to be designed will promote alternative transportation and increase the penetration rate of renewable energy harvesting technologies. The research will establish the US foothold in the area of compact, high-torque motors facilitating gearless electromechanical systems. The comprehensive educational plan built with lecture and laboratory modules on alternative energy and transportation will help train many graduate and undergraduate students.