Identification of the technical potential of permanent magnet Flux-Switching-Machines compared to rotor-excited PM synchronous machines

与转子励磁永磁同步电机相比，确定永磁磁通开关电机的技术潜力

基本信息

批准号：
318181465
负责人：
Professor Dr.-Ing. Andreas Binder
金额：
--
依托单位：
Institut für Elektrische Energiewandlung
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2016
资助国家：
德国
起止时间：
2015-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/318181465?language=en
关键词：
Identification technical potential permanent magnet

项目摘要

In conventional permanent magnet synchronous machines, the magnets (e.g. neodymium-iron-boron-(NdFeB)-magnets) are on the rotating part (rotor), where only a limited cooling of the magnets is possible. Thus, typical continuous operating temperatures in the magnets are at 150 °C - 180 °C. So high continuous temperatures are only possible with NdFeB-magnets with additives (e.g. dysprosium) or samarium-cobalt (SmCo) must be used. SmCo-magnets have a lower remanence flux density and are more expensive than NdFeB-magnets, but also the dysprosium increases the cost of NdFeB-magnets significantly. Alternatively, the magnets of the machine can be mounted in the stationary part (stator). Due to this, the magnets are close to the stator cooling circuit and the temperature in the magnets can in general be kept below 100 °C. Therefore, cheap and highly remanent magnets with less or even without dysprosium can be used. The rotor of those machines is winding- and magnet-free and robust. In the stator, inexpensive tooth coils can be used, but the constructive fixation of the magnets must be designed rationally. Three different topologies with stator mounted magnets have gained increased attention in recent years: Doubly-Salient-Permanent-Magnet-(DSPM)-Machine, Flux-Reversal-Machine (FRM) and Flux-Switching-Permanent-Magnet-(FSPM)-Machine. Existing investigations suggest that the FSPM-Machine achieves the highest torque densities at the same thermal utilization. A goal of this project is the comparison of the three machines for a given performance requirement and to document quantitatively the expected advantages of the FSPM-Machine. Another aim of the project is to develop a methodological approach for the design of Flux-Switching-Machines in the power range up to 150 kW as high-torque drives for the lower and medium speed range up to 3000 /min. The electromagnetic, thermal, mechanical and constructive design criteria should be worked out in coordinated steps and validated by measurements using a prototype machine. A prototype of the Flux-Switching-Machine should be compared with a comparable, at the Institut für Elektrische Energiewandlung available, conventional PM synchronous machine with regard to the achievable electromagnetic utilization, efficiency, converter utilization and the performance in case of a failure (such as a short circuit).From that, general applicable design rules for Flux-Switching-Machines should be derived and the advantages and disadvantages of this type of machine should be emphasized compared to conventional machines.

在传统永磁同步电机中，磁体（例如，钕铁硼（NdFeB）磁体）位于旋转部件（转子）上，只能对磁体进行有限的冷却，因此，典型的连续工作温度为磁体的温度为 150 °C - 180 °C，因此只有使用含有添加剂（例如镝）或的 NdFeB 磁体才能实现高连续温度。必须使用钐钴 (SmCo) 磁体，其剩磁通密度较低且比 NdFeB 磁体更昂贵，但镝也显着增加了 NdFeB 磁体的成本。安装在固定部分（定子）中，因此，磁体靠近定子冷却回路，并且磁体中的温度通常可以保持在以下水平。因此，可以使用含有较少甚至不含镝的廉价且高剩磁的磁体，并且在定子中可以使用廉价的齿形线圈。磁体的固定必须合理设计。近年来，定子安装磁体的三种不同拓扑结构引起了越来越多的关注：双凸极永磁机（DSPM）、磁通反转机 (FRM) 和磁通开关永磁机 (FSPM) 现有研究表明，FSPM 机在相同的热利用率下实现了最高的扭矩密度。该项目的一个目标是进行比较。该项目的另一个目标是开发一种用于设计的方法。功率范围高达 150 kW 的磁通开关机，作为低速和中速范围高达 3000 /min 的高扭矩驱动器电磁、热、机械和结构设计标准应协调一致地制定和验证。通过使用原型机进行测量，应将通量切换机的原型与 Institut für Elektrische Energiewandlung 提供的传统设备进行比较。永磁同步电机在可实现的电磁利用率、效率、转换器利用率和故障情况下（例如短路）的性能。由此，应得出磁通开关机的通用适用设计规则和优点与传统机器相比，应强调这种类型机器的缺点。