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Universal acoustic modelling framework for electrical drives

机译：电气驱动的通用声学建模框架

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摘要

The interdisciplinary task of assessing the acoustic characteristics of electrical drive-systems gains importance in traction, industrial and consumer applications. This study presents a universal acoustic modelling framework for efficient, high-quality acoustic modelling of electrical drives. The objective is to make drive acoustic modelling and assessment of an integral part of drive-system design. The approach integrates directly into the general drive-system design process and can be applied to all types of machines (synchronous, induction, switched reluctance and direct current). Inverter-operation-related switching frequencies and spatial machine harmonics are routinely taken into account. The process is applicable to machines with rotor or stator skew as well as to outer-rotor and transversal-flux machines. It combines the two fast and user-interactive steps system simulation and vibration synthesis. The underlying model parameters are obtained via automated offline finite-element simulations based on generic input parameters. This allows using complex electromagnetic and structural models without computation time becoming prohibitive. Application examples are given for permanent magnet synchronous machine traction drives for (hybrid) electric vehicles as well as a for a switched-reluctance auxiliary drive. Simulated run-up spectrograms for structure-borne sound are validated against measurements and operational deflections are presented.
机译：评估电气驱动系统的声学特性的跨学科任务在牵引，工业和消费者应用中变得越来越重要。这项研究提出了一种通用的声学建模框架，可以对电驱动器进行高效，高质量的声学建模。目的是对驱动器声学建模和驱动系统设计的组成部分进行评估。该方法直接集成到一般的驱动系统设计过程中，并且可以应用于所有类型的机器（同步，感应，开关磁阻和直流电）。通常会考虑与逆变器运行相关的开关频率和空间电机谐波。该过程适用于具有转子或定子偏斜的机器，以及外转子和横向磁通的机器。它结合了两个快速且用户交互的步骤，系统仿真和振动综合。通过基于通用输入参数的自动离线有限元模拟获得基本模型参数。这样就可以使用复杂的电磁和结构模型，而不会浪费计算时间。给出了用于（混合动力）电动车辆的永磁同步电机牵引驱动器以及开关磁阻辅助驱动器的应用示例。对结构声的模拟运行频谱图进行了测量验证，并给出了操作偏差。

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