Ironless axial flux permanent magnet synchronous machine with a ceramic winding carrier for flywheel applications

飞轮储能系统体积能量的增加促进了轴向磁通电机在径向磁通电机之前，由于较短的驱动轴。为了消除空载运行期间的铁损，电机绕组由陶瓷板承载，同时为绕组的冷却提供良好的导热性。正在进行的研究项目的继续旨在验证一个无铁轴向磁通永磁同步电机的飞轮应用高达40 000转。这需要一个由定子和转子组成的机器以及一个用于其操作的逆变器。目前，仅对绝缘陶瓷绕组载体进行了分析，忽略了众多影响因素。从作者的角度来看，一个非常小的电感和低损耗的轴向磁通电机的成功运行需要一个模块化的多电平逆变器。因此，通过实现驱动系统，项目计划得以扩展。

An increase of the volumic energy of flywheel energy storage systems promotes axial-flux machines before radial flux machines due to the shorter drive shaft. For the elimination of iron losses during no-load operation, a ceramic plate carries the machine winding whilst providing a good thermal conductivity for the cooling of the winding. The continuation of the ongoing research project aims to validate an ironless axial-flux PM synchronous machine for flywheel applications of up to 40 000 rpm. This requires a machine consisting of stator and rotor as well as an inverter for its operation. Currently, only the isolates ceramic winding carrier could be analyzed, neglecting numerous effects. From the author’s perspective, a successful operation of the axial-flux machine with a very small inductance and low losses demands a modular multi-level inverter. The project plan is therefore extended by the realization of the drive system.