Rotor cooling of low-inertia induction machines for highly dynamic applications

适用于高动态应用的低惯量感应电机的转子冷却

• 批准号: 507287551
• 负责人: Professor Dr.-Ing. Jochen Fröhlich
• 金额: --
• 依托单位: Institut für Strömungsmechanik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/507287551?language=en
• 关键词: Rotor; cooling; low; inertia; induction

Highly dynamic electric asynchronous machines, such as those used in testing and production facilities, are characterized by extremely frequent torque changes, where a cycle may also comprise a single revolution only. This requires a construction with a low moment of inertia, and above all, the massively increased heat loss compared to other machines must be safely removed. The aim of the project is to investigate a new cooling system with air radially guided through rotor and stator providing such an intense heat removal. Rotor and stator channels are coupled via the gap, and the flow through the rotor occurs with complete reversal of direction, which leads to complicated phenomena. Second, the novel design and the highly dynamic operation result in complex electromechanical conditions that must be understood and controlled as well. The investigation of the interaction between design, electromechanical, thermal, fluid mechanical and application-determined aspects requires a cross-disciplinary approach, which is realized by the collaboration of the two applicants. Methodical tools from the field of electrical machines and from the field of fluid mechanics are combined in a thoroughly coordinated manner to investigate phenomena on different length scales. This ranges from a disk model as a reference experiment, supplemented by highly resolving simulations of flow details, to a network model of an example machine, which allows the evaluation of the concept in the sense of a numerical demonstrator. The aim of this fundamental project is to gain a detailed understanding of the multi-physical phenomena associated with the novel cooling concept, an overall evaluation, and a clear statement on application perspectives for industrial use.

高动态异步电机，例如在测试和生产设施中使用的电机，其特征在于极其频繁的扭矩变化，其中一个循环也可以仅包括单次旋转。这就需要一种具有低转动惯量的结构，最重要的是，必须安全地消除与其他机器相比大量增加的热损失。该项目的目的是研究一种新的冷却系统，空气径向引导通过转子和定子提供这样一个强烈的散热。转子和定子通道通过差距耦合，并且通过转子的流动发生完全反向，这导致复杂的现象。其次，新颖的设计和高度动态的操作导致复杂的机电条件，必须理解和控制。设计，机电，热，流体机械和应用确定方面之间的相互作用的调查需要一个跨学科的方法，这是通过两个申请人的合作实现。电机领域和流体力学领域的方法工具以完全协调的方式相结合，以研究不同长度尺度上的现象。这范围从一个磁盘模型作为参考实验，辅以高分辨率的模拟流的细节，网络模型的一个例子机器，它允许在这个意义上的数值演示的概念进行评估。这个基础项目的目的是详细了解与新型冷却概念相关的多物理现象，进行全面评估，并明确阐述工业应用前景。