Investigation of Permanent Magnet assisted Synchronous Reluctance Machines for Traction Drives in High Power Flux Weakening Operation
Investigation of Permanent Magnet assisted Synchronous Reluctance Machines for Traction Drives in High Power Flux Weakening Operation
复制标题
大功率弱磁运行中牵引传动用永磁辅助同步磁阻电机的研究
DOI：
10.1109/itec48692.2020.9161724
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
M. Schrödl
中科院分区：
文献类型：
--
作者：
M. Hofer;M. Schrödl
本文介绍了几种永磁辅助同步磁阻电机的转子拓扑结构的调查。用于混合动力和全电动车辆的电动传动系统在深度弱磁运行中需要宽范围的恒定功率需求，直到高转速。因此，不同的转子几何形状和两种永磁材料的这种机器类型的峰值扭矩和最大功率能力在有限的机器体积进行了比较。实现永磁辅助同步磁阻电机深度弱磁能力的一个关键标准是正确选择电机的预磁化水平和永磁体磁链。重点是首选无稀土磁体概念，并最大限度地利用低成本铁氧体磁体。最后，由于给定的体积限制，高永磁磁链值只能通过铁氧体和稀土磁体的组合来实现，以实现高功率容量和有吸引力的产品成本。
This paper presents an investigation of several rotor topologies for permanent magnet assisted synchronous reluctance machines. Electric drivetrains for hybrid and full electric vehicles request a wide constant power demand up to high rotational speeds in deep flux weakening operation. Therefore, different rotor geometries and two kinds of permanent magnet materials for this machine type are compared with regard to peak torque and maximum power capability at a limited machine volume. A key criteria for enabling deep flux weakening capability of permanent magnet assisted synchronous reluctance motors is the right choice of the machine’s pre-magnetization level and the permanent magnet flux linkage. The focus is to prefer rare earth free magnet concepts and maximize the utilization of low cost ferrite magnets. Finally, because of the given volume constraints a high permanent flux linkage value can only be realized by a combination of ferrites and rare earth magnets to achieve both a high power capability and attractive product costs.