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

电动马达消耗了全球发电量的近50%。集成变速电机驱动器在提高这些能源转换器的效率、可靠性和性能方面发挥着关键作用，被认为是全球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)驱动可以为这些应用提供低成本、坚固耐用和容错的解决方案。然而，这一系列驱动器的高噪音和高振动限制了它们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驱动器的这种不受欢迎的功能。希望该方法的有效使用将为该技术在该行业的各个领域的整合开辟新的视野，从而为经济实惠和节能产品的使用提供一种低成本和高效率的替代方案。这一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一种可通过实验测量的连接。反过来，这将允许在线调谐由于开关磁阻电机驱动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，该方法大大减少了开关磁阻电机传动机电特性优化设计的计算量。此外，本文还考虑了转子与定子之间的交叉耦合和开关磁阻电机驱动系统的非线性动力学。此外，还将研究宽带隙器件对开关磁阻电机驱动器结构响应的影响。所提出的方法将通过详细的多物理有限元分析和实验进行研究。该项目的成功完成将：(A)在将拟议方法应用于其他电机、电感、变压器和发电机方面创造新的机会；(B)培养新一代电机专家，他们对机电能量转换、振动和电力电子有深刻的理解；以及(C)使人们更好地了解电机和变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.