大功率高频变压器漏感的频率特性研究

2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI:10.1109/PEAC.2018.8590657

Jinsong Kang, Kaili Wu, Wei Li, Siyuan Mu

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引用次数: 0

摘要

大功率高频变压器的漏感是双向全桥DC/DC变换器的关键因素。采用解析法给出了宽频带泄漏电感的频率特性曲线，将其划分为三个区域，并与有限元仿真进行了对比验证。提出了转频的概念，研究了变厚度铜箔变压器的转频变化趋势。在车削频率以下，通过将多层铜箔替换为厚度相同的单层铜箔，实现了仿真模型的简化，并将三维有限元计算结果与实测结果进行了对比验证。

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Frequency-Dependent Characteristic of Leakage Inductance in High-Power High-Frequency Transformer

The leakage inductance of high-power high-frequency transformers is a key factor for bidirectional full-bridge DC/DC converters. The frequency dependent characteristic curve of leakage inductance in a wide frequency band is presented using analytical method, which can be divided into three regions and verified by comparing with finite element simulation. Also, the concept of turning frequency is proposed and the changing trend of turning frequency is studied for transformers with varying-thickness copper foils. Below the turning frequency, the simulation model simplification is implemented by replacing multi-layer copper foil with single-layer copper foil with the same thickness, which is verified by comparing the three-dimensional finite element calculation result with the measurement.

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2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)

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