Radial Force Shaping for Acoustic Noise Reduction in Switched Reluctance Machines
Radial Force Shaping for Acoustic Noise Reduction in Switched Reluctance Machines
复制标题
用于降低开关磁阻电机中的声学噪声的径向力整形
DOI：
10.1109/tpel.2019.2891050
复制
发表时间：
2019
影响因子：
6.7
通讯作者：
A. Emadi
中科院分区：
文献类型：
--
作者：
A. Callegaro;B. Bilgin;A. Emadi
开关磁阻电机（SRM）的一些优点是鲁棒性、简单构造和低成本。这些都是电动机的理想特性，特别是在汽车行业，其中始终需要高温和高速运行以及低成本。然而，由常规控制的SRM产生的声学噪声会妨碍其在需要声学舒适性的应用中的使用。当振动模式在接近定子模态固有频率的强迫频率下由相应的空间阶数激发时，定子框架辐射声学噪声。激励表面波是径向力密度波形，是时间和空间位置的函数。本文提出了一种基于谐波含量分析的相位径向力整形方法。径向力形状的通用函数被确定，其参数通过优化算法计算，以最小化给定平均转矩的转矩涟漪。从相径向力分布，获得电流参考。所提出的方法进行了实验验证与四相8/6 SRM通过在不同的速度和负载条件下的声学噪声测量。
Robustness, simple construction, and low cost are some of the advantages of switched reluctance machines (SRMs). These are all desirable characteristics of an electric motor, especially in the automotive sector, where high-temperature and high-speed operation, and low cost are always in demand. However, the acoustic noise generation by conventionally controlled SRMs can prevent its use in applications where acoustic comfort is required. Acoustic noise is radiated by the stator frame when a vibration mode is excited by the respective spatial order at a forcing frequency that is close to the stator's modal natural frequency. The excitation surface wave is the radial force density waveform, which is a function of time and spatial position. In this paper, a phase radial force shaping method is proposed by using harmonic content analysis. A generic function for the radial force shape is identified, whose parameters are calculated by an optimization algorithm to minimize the torque ripple for a given average torque. From the phase radial force profile, a current reference is obtained. The proposed methodology is experimentally validated with a four-phase 8/6 SRM through acoustic noise measurements at different speed and load conditions.