Noise Reduction of Reactor Driven by Inverter Power Supply Using Coupled Magnetic, Vibration and Acoustic Analysis

为了研究逆变电源驱动电抗器的降噪问题，提出了考虑电磁和磁致伸缩的磁振耦合分析方法，并通过实测分析和验证了噪声产生的机理。此外，还提出了在不改变三相电抗器的平衡和磁阻的情况下，确定磁阻间隙的最佳硬度和增加磁阻间隙的方法。在三维分析中，改进后的反应器的位移可以减少到普通反应器的1/ 25。

To investigate the noise reduction of reactors driven by inverter power supplies, the method of the coupled magnetic and vibration analyses taking account of both electromagnetism and magnetostriction was developed, and the mechanism of noise generation was analyzed and verified by the measurement. Moreover, the methods of determining the optimal hardness of gaps and adding gaps in the yokes without changing the balance and reluctance of a three-phase reactor were also proposed. It was shown that the displacements of the improved reactor can be reduced to be 1/ 25 of the ordinary reactor in the 3-D analyses.