Modeling and mitigation of acoustic noise in switched reluctance motor drives using mechanical impulse response

电动机消耗了全球近50%的电力。可调速电机驱动器的集成在提高这些能量转换器的效率、可靠性和性能方面起着关键作用，并且被认为是地球仪未来能源系统的必要步骤。 电气化交通、家用电器和工业驱动是这一转型的主要候选者。开关磁阻电机（SRM）驱动器可以为这些应用提供低成本，鲁棒性和容错的解决方案。然而，该系列变频器的高噪声和振动限制了其在许多应用中的使用。该项目通过引入一种新的计算工具来解决这一缺点，该工具将允许对设计和控制进行最佳调整，以最大限度地减少SRM驱动器的这种不良特性。希望该方法的有效使用将为该技术在工业的各个部门的集成开辟新的视野，从而提供一种低成本和高效率的替代方案，用于负担得起的和节能的products.The建议的方法是基于使用机电脉冲响应的机器建模和分析。这种创新的工具在电力电子转换器的端子和定子框架的加速度之间提供了实验可测量的联系。反过来，这将允许在线调谐由于SR驱动器定子框架中的径向和切向振动而产生的振动和声学噪声。此外，所提出的方法大大减少了SRM驱动器的机电功能的优化设计的计算工作。此外，在工作中，转子和定子之间的交叉耦合和SRM驱动器的非线性动力学将被考虑。此外，宽禁带器件对SRM驱动器的结构响应的影响将被调查。将通过详细的多物理场有限元分析和实验研究所提出的方法。本项目的成功完成将（a）为将所提出的方法应用于其他电动机、电感器、变压器和发电机创造新的机会;（B）培养新一代对机电能量转换、振动和电力电子有深刻理解的电动机专家;（c）更好地理解电机和可调速驱动器中的磁结构现象。

Electric motors consume nearly fifty percent of the electricity that is generated worldwide. Integration of adjustable speed motor drives plays a pivotal role in increasing efficiency, reliability and performance in these energy converters and is considered a necessary step in the future energy systems across the globe. Electrified transportation, home appliances and industrial drives are among the primary candidates for this transformation. Switched reluctance motor (SRM) drives can provide a low cost, robust and fault tolerant solution for these applications. However, high levels of acoustic noise and vibration in this family of drives has limited their use in many applications. This project addresses this shortcoming by introducing a new computational tool that will allow for optimal tuning of the design and control to minimize this undesirable feature of SRM drives. It is hoped that effective use of the proposed method will open new horizons for integration of this technology in various sectors of the industry, thereby providing a low cost and highly efficient alternative for use in affordable and energy saving products.The proposed method is based on the use of the electromechanical impulse response for machine modeling and analysis. This innovative tool provides an experimentally measurable link between the terminals of the power electronic converter and acceleration of the stator frame. This, in turn, will allow for online tuning of the vibration and acoustic noise that is generated by virtue of the radial and tangential vibrations in the stator frame of SRM drives. Furthermore, the proposed method substantially reduces the computational efforts in optimal design of the electromechanical features of SRM drives. In addition, cross coupling between the rotor and stator and nonlinear dynamics of the SRM drive will be taken into account in the work. Furthermore, the impact of wide-bandgap devices on structural response of SRM drives will be investigated. The proposed method will be investigated through detailed multi-physics finite element analysis and experiments. Successful completion of this project will (a) create new opportunities in applying the proposed method to other electric motors, inductors, transformers and generators; (b) educate a new generation of motor experts with insightful understanding of electromechanical energy conversion, vibration and power electronics; and (c) provide a better understanding of magneto-structural phenomena in electric machines and adjustable speed drives.