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Optimization of Switching Transient Waveform to Reduce Harmonics in Selective Frequency Bands

机译:优化开关瞬态波形以降低选择性频带中的谐波

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High-performance power switching devices are used to realize high-performance power converters. These devices tend to generate high-speed switching harmonics that cause electromagnetic interference (EMI). There are several methods for reducing undesirable effects of EMI. An EMI filter or shielding is one of the most popular ways to reduce EMI; however, both EMI filter and shielding increase the cost, size, and weight of power modules. It is well known that the shape of the switching transient strongly affects the harmonics distribution. This paper proposes a new method for reducing high-frequency noise at specific frequency bands by modifying switching transient slopes. This paper describes the improvement in the method of transient wave calculation for obtaining more effective waveforms. In addition, it provides experimental verifications to show the feasibility of the proposed method.
机译:高性能电源开关设备用于实现高性能电源转换器。这些设备倾向于产生高速开关谐波,从而引起电磁干扰(EMI)。有几种减少EMI不良影响的方法。 EMI滤波器或屏蔽是降低EMI的最流行方法之一。然而,EMI滤波器和屏蔽都增加了功率模块的成本,尺寸和重量。众所周知,开关瞬变的形状会严重影响谐波分布。本文提出了一种通过修改开关瞬态斜率来降低特定频段高频噪声的新方法。本文介绍了瞬态波计算方法的改进,以获得更有效的波形。此外,它提供了实验验证,以证明该方法的可行性。

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