Energy-optimal torque control and dimensioning of high dynamic induction moor drives under consideration of transient skin effect

考虑瞬态集肤效应的高动态感应系泊驱动器的能量最优扭矩控制和尺寸设计

• 批准号: 190397295
• 负责人: Professor Dr.-Ing. Wilfried Hofmann
• 金额: --
• 依托单位: Professur für Elektrische Maschinen und Antriebe
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/190397295?language=en
• 关键词: Energy; optimal; torque; control; dimensioning

A high torque dynamic is demanded in modern power converter powered AC drives for a high productivity. The rapid change of torque, however, requires a correspondingly rapid change of the winding currents, which leads to stimulation of transient skin effect in the rotor bars of squirrel-cage motors. The skin effect, in turn, results in the additional rotor winding losses especially during fast load cycles, an increase of temperature in rotor, and therefore, overheating problems. In addition, the transient skin effect affects the control quality of the two most widely used control methods (FOC and DTC). The transient skin effect leads to a dynamic change in the rotor parameters. Any deviation from the real machine parameters leads to an incorrect calculation of the decoupling and to an incorrect estimation of the flux angle. Representative examples of such transient skin effect are the cross cutter drives in paper machines, the shears in rolling mills and the test bench drives in the automotive industry. During the project, it was shown that the additional rotor losses caused by the transient skin effect can be effectively reduced by means of an energy-efficient high-dynamic torque control and by an improved rotor geometry. At the same time, the machine dynamics and the other operating characteristics of the induction motor are not negatively affected. It could still be shown that the control quality is improved on the one hand by the exact modeling of the transient skin effect in the rotor bars and on the other hand by the real-time tracking of the rotor parameters by means of on-line parameter identification methods. In the further work, the theoretically gained knowledge should be tested experimentally. In parallel, the last gap in the theory of this topic should be concluded by the online parameter identification of the rotor time constant and the Pareto Optimum for the two important target variables (transient skin effect losses and moment of inertia).

在现代电源转换器动力AC驱动器中，需要高扭矩动态，以提高生产率。然而，扭矩的快速变化需要相应的绕组电流的快速变化，这导致刺激松鼠笼电动机转子杆中瞬时皮肤效应。反过来，皮肤效应导致额外的转子绕组损失，尤其是在快速载荷周期，转子温度升高，因此导致问题过热。此外，瞬态皮肤效应会影响两种最广泛使用的控制方法（FOC和DTC）的控制质量。瞬态皮肤效应导致转子参数的动态变化。与真实机器参数的任何偏差都会导致对脱钩的不正确计算和对通量角度的不正确估计。这种瞬时皮肤效应的代表性例子是纸机中的横切器驱动器，滚动厂中的剪切和汽车行业的测试长凳驱动器。在项目期间，结果表明，通过瞬时皮肤效应引起的其他转子损失可以通过节能高动力扭矩控制和改善的转子几何形状有效地降低。同时，机器动力学和感应电动机的其他操作特性不会受到负面影响。仍然可以证明，一方面，通过在转子条中的瞬态皮肤效应的精确建模，通过在线参数识别方法的实时跟踪来提高控制质量。在进一步的工作中，理论上获得的知识应进行实验测试。同时，该主题理论中的最后差距应通过在线参数识别转子时间常数的在线参数识别和两个重要目标变量（瞬态皮肤效应损失和惯性矩）的最佳选择。

项目成果

Load Cycle-Based Design Optimization of Induction Motor Drives for Highly Dynamic Applications

适用于高动态应用的感应电机驱动器的基于负载循环的设计优化

• DOI: 10.1109/icit.2019.8754948
• 发表时间: 2019
• 期刊: 2019 IEEE International Conference on Industrial Technology (ICIT)
• 作者: W. Hofmann

Energy-efficient control of induction motors with high torque dynamics and transient skin effect

具有高扭矩动态和瞬态趋肤效应的感应电机节能控制

• DOI: 10.1109/iecon.2013.6699570
• 发表时间: 2013
• 期刊: IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society
• 作者: W. Hofmann

Determination of Transient Eddy Current Losses in Induction Motors with High Torque Dynamics

高扭矩动态感应电机瞬态涡流损耗的确定

• DOI: 10.1109/iecon.2018.8591693
• 发表时间: 2018
• 期刊: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society
• 作者: W. Hofmann