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).

在现代电源变换器驱动的交流驱动器中，为了提高生产率，需要高转矩动态。然而，转矩的快速变化要求绕组电流的相应快速变化，从而刺激鼠笼电机转子条的瞬态趋肤效应。集肤效应，反过来，导致额外的转子绕组损耗，特别是在快速负载周期，转子温度的增加，因此，过热的问题。此外，暂态集肤效应影响了两种应用最广泛的控制方法（FOC和DTC）的控制质量。瞬态趋肤效应导致转子参数发生动态变化。与实际机器参数的任何偏差都会导致解耦计算的不正确和磁通角的估计不正确。这种瞬态集肤效应的典型例子是造纸机中的横切机驱动器，轧机中的剪板机和汽车工业中的试验台驱动器。工程实践表明，通过高效节能的高动态转矩控制和改进转子几何结构，可以有效降低瞬态集肤效应引起的转子附加损失。同时，对感应电机的机器动力学和其他工作特性没有负面影响。通过对转子棒内暂态集肤效应的精确建模，以及采用在线参数辨识方法对转子参数进行实时跟踪，提高了控制质量。在进一步的工作中，理论上获得的知识应该进行实验检验。同时，通过转子时间常数的在线参数辨识和对两个重要目标变量（瞬态集肤效应损失和转动惯量）的Pareto最优来填补本课题理论的最后空白。

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