Project 5: Modeling of soft magnetic materials under consideration of the relevant parameters for electric drives

节能机器领域的新发展重点是提高功率密度和效率。机器核心的软磁材料是电能到机械能转换的核心部件。即使在高速下，为了实现机器性能的显著提高，方法上的改进是材料方面的有效策略。目标值、损耗和磁化率都受到机器设计以及所使用的软磁材料的影响。由于效率提高的潜力在很大程度上被设计措施所耗尽，目前研究和开发的重点是材料设计。然而，不仅带材材料的机械和磁性能是决定性的，而且由于其对材料磁性能的影响，加工也需要材料生产和加工的相互作用。课课组项目前三年IEM的主要研究工作是建立半物理相关模型，作为相关显微组织参数与非晶粒取向电工钢宏观、可测量的磁性和力学性能之间的界面。该研究小组所要求的第二供资阶段的分项目范围的总目标是全面了解整个非晶粒导向的电气钢的生产和加工，借助这些生产和加工过程的控制，从而有可能对电力驱动进行量身定制的使用。项目合作伙伴合作的核心任务是通过新的合金概念来检验模型的可转移性，通过对工艺链的连续建模来验证模型的有效性，以及通过对生产策略的应用优化来适应电机中的应用。在此背景下，IEM开发了生产的电工钢样品的计量特性的关键方面，考虑到材料的机械和磁模拟耦合，微观结构的定量成像和加工影响，以及确定和生产不同操作点的特定材料微观结构。在项目结束时，将对演示器的设计、建造和测试进行评估，并验证其微结构、组件、使用的模型及其应用。

The focus of new developments in the area of energy-efficient machines is in particular on an increase in the power density and the efficiency. The soft-magnetic material at the core of the machines is the central component of the energy conversion from electrical to mechanical energy. In order to achieve a noticeable increase in the performance of the machine even at high speeds, the methodological improvement is an effective strategy on the part of the material. Both target values, losses and magnetizability are influenced by the design of the machine in combination with the soft-magnetic materials used. As the potential for efficiency gains is largely exhausted by design measures, the focus of current research and development is on material design. However, not only the mechanical and magnetic properties of the strip material are decisive, but also the processing which, by its influence on the magnetic behavior of the material, requires a reciprocal view of material production and processing.The main research work of the IEM in the first three project years of the research group is the development of a semi-physical correlation model as an interface between relevant microstructural parameters and macroscopic, measurable magnetic and mechanical properties of non-grain oriented electrical steel.The sub-project-wide overall objectives of the requested second funding phase of the research group aim at a holistic understanding of the entire non-grain oriented electrical steel production and processing, with the aid of which a control of the processes and, thus, a tailored use for electric drives will be made possible. The transferability, which is examined by means of a new alloy concept, the validation of the modeling as well as the application-optimized adaption of the production strategies by the continuous modeling of the process chain up to the application in electrical machines are the core task of the cooperation of the project partners. In this context, the IEM develops the key aspects of the metrological characterization of the produced electrical steel samples, the coupling of mechanical and magnetic simulation taking into account the material, the quantitative imaging of the microstructure and the processing influence, and the determination and production of specific material microstructures for different operating points. At the end of the project, the design, construction and testing of a demonstrator will be evaluated and validated for the microstructures, components, models used and their application.