Evaluating the high-frequency winding loss accurately is crucial for the design of modern high-frequency power converters. This paper proposes a novel experimental method to accurately measure the in-situ inductor winding loss, which separates out the winding loss from the core loss through the reactive voltage cancellation concept. The proposed in-situ measurement can account for the complete winding loss including impacts from non-ideal field distributions by testing the inductor with the core attached, e.g., the winding edge effect, bypass flux, fringing flux, and the non-linear dynamic behaviour of the core, which cannot be well modelled with the existing analytical or simulation methods. This method has immunity against the probe phase discrepancy error, since it is designed to measure a pair of voltage and current that are in phase. This approach can be considered as the first attempt of applying the reactive voltage cancellation concept in measuring winding loss, while this concept was originally brought up for core loss and applied for core loss measurement only. By performing a Triple Pulse Test (TPT) procedure, the winding losses under practical large signals with dc-bias and rectangular voltage can be evaluated with the proposed testing circuit. The proposed approach is compared and verified against the conventional methods relying on ( 1 ) small-signal impedance measurements and FFT analysis ( 2 ) in-situ measurement with the two winding method to exclude the core loss. The presented method provides a foundation for the accurate in-situ evaluation of winding loss covering all the large-signal and non-linear effects.

中文翻译：

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一种抗相位差误差的磁芯电感器高频绕组损耗现场测量新方法


准确评估高频绕组损耗对于现代高频功率转换器的设计至关重要。本文提出了一种精确测量原位电感器绕组损耗的新颖实验方法，该方法通过无功电压抵消概念将绕组损耗与磁芯损耗分开。所提出的现场测量可以通过测试带有磁芯的电感器来解释完整的绕组损耗，包括非理想场分布的影响，例如绕组边缘效应、旁路磁通、边缘磁通和非线性动态行为现有的分析或模拟方法无法对其进行良好的建模。该方法能够抵抗探头相位差误差，因为它被设计用于测量一对同相的电压和电流。这种方法可以被认为是应用无功电压抵消概念来测量绕组损耗的首次尝试，而该概念最初是针对磁芯损耗提出的，并且仅应用于磁芯损耗测量。通过执行三重脉冲测试（TPT）程序，可以使用所提出的测试电路来评估具有直流偏置和矩形电压的实际大信号下的绕组损耗。所提出的方法与传统方法进行了比较和验证，传统方法依赖于（1）小信号阻抗测量和FFT分析（2）使用两绕组方法进行现场测量以排除磁芯损耗。该方法为覆盖所有大信号和非线性效应的绕组损耗的准确现场评估提供了基础。