Self-Sensing Control of Induction Machines based on an Additional Single-Axis Short-Circuited Rotor Winding

基于附加单轴短路转子绕组的感应电机自传感控制

• 批准号: 424944120
• 负责人: Professor Dr.-Ing. Axel Mertens
• 金额: --
• 依托单位: Institut für Antriebssysteme und Leistungselektronik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/424944120?language=en
• 关键词: Self; Sensing; Control; Induction; Machines

With the aid of field-oriented control methods, induction machines (IM) can be employed to design highly dynamic drives of high Control quality when using the appropriate mechanical sensors. Compared to the conventional operation with sensors, sensorless or self-sensing Operation features a lot of advantages, such as saving of cost, volume and maintenance effort as well as operation under extreme environmentalconditions not permitting the use of mechanical sensors. The challenge is to ensure position and speed tracking over the entire speed and frequency range. Up to now, there exist no self-sensing control methods for IM which are applicable down to zero Stator frequency, requiring low magnetization with little losses especially at low torques, and which allow for rotor position estimation. The Focus of the research project is on investigating design methods for a self-sensing control over the entire speed range featuring the aforementioned aspects. The initial point is to investigate a self-sensing control method using the same observer structure for EMF-based and saliency-based estimation. To further improve the quality of self-sensing control, current oversampling and almost complete voltage error compensation of the inverter shall be employed. Another goal is to develop a novel rotor design for IM to increase saliency, in order to facilitate particularly the operation of IM up to zero Stator frequency even at low magnetization. The basic idea of a unified observer structure and a modified rotor design has already been successfully investigated in preliminary work of the applicants done on permanent magnet synchronous machines (PMSM). The major issue of this proposal is to find out if and how these approaches can also be apploed to IM and in how far it is possible to improve self-sensing control of IM. Apart from transferring the aforementioned methods to IM, a method shall be developed to design the rotor with an additional coil with the aim to increase the rotor position-dependent saliency of IM without considerably deteriorating torque and torque ripple as well as efficiency. The aditional coil has to b e considered when modelling the machine for the control. Based on the enhanced model, a self-sensing control shall be investigated, tracking the rotor position by use of the newly applied saliency. Performance and limitations of the novel self-sensing control shall be evaluated in a final step.

在磁场定向控制方法的帮助下，感应电机（IM）可以使用适当的机械传感器来设计高动态的高控制质量的驱动器。与传统的有传感器的操作相比，无传感器或自传感操作具有许多优点，例如节省成本，体积和维护工作量，以及在不允许使用机械传感器的极端环境条件下运行。挑战在于确保整个速度和频率范围内的位置和速度跟踪。到目前为止，还没有适用于定子频率为零、要求低磁化强度且损耗小（特别是在低转矩下）并允许转子位置估计的IM自感知控制方法。该研究项目的重点是调查设计方法的自我感知控制的整个速度范围具有上述方面。本文的出发点是研究一种使用相同观测器结构的自感知控制方法，用于基于emf和基于显著性的估计。为了进一步提高自感知控制的质量，需要对逆变器进行电流过采样和几乎完全的电压误差补偿。另一个目标是为IM开发一种新的转子设计，以增加显着性，以便在低磁化强度下也能使IM在零定子频率下运行。统一观测器结构和改进转子设计的基本思想已经在永磁同步电机（PMSM）的前期工作中得到了成功的研究。本建议的主要问题是找出这些方法是否以及如何也适用于即时通讯，以及在多大程度上可能改善即时通讯的自我感知控制。除了将上述方法转移到IM中，还需要开发一种方法来设计转子附加线圈，以提高IM的转子位置依赖性显著性，而不会显着降低扭矩和转矩脉动以及效率。在对机器进行控制建模时，必须考虑额外的线圈。在增强模型的基础上，研究一种自感知控制，利用新应用的显著性跟踪转子位置。在最后一步，我们将评估这种新型自感知控制的性能和局限性。