Simplified calculation method for leakage inductance of high frequency transformers

被引：0
|
作者：
Ye Z.-J. [1 ]
Tan K.-J. [2 ]
Yu W. [1 ]
Lin X.-M. [1 ]
Luo J.-L. [1 ]
Hu T. [3 ]
机构：
[1] College of Information Science and Engineering, Huaqiao University, Xiamen
[2] State Grid Zhuzhou Electric Power Co., Ltd, Zhuzhou
[3] Hunan Linkjoin Technology Co., Ltd., Loudi
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2021年 / 25卷 / 04期
关键词：
Equivalent transformation; Flux method; Frequency-dependence characteristics; High frequency transformer; Leakage inductance calculation; Winding structure;
D O I：
10.15938/j.emc.2021.04.012
中图分类号：
学科分类号：
摘要：
The high frequency effect of windings makes the leakage inductance parameters of high frequency transformer have complex frequency-dependence characteristics. However, the traditional algorithm does not consider the frequency-dependence of magnetic flux leakage, which leads to a large calculation error. While the modern algorithm simply applies Dowell formula and the leakage distribution characteristics of different winding structures are not considered, which leads to a low universality of the formula and the conclusion formula is difficult to use in practical engineering. In this paper, based on the analysis of the actual flux leakage distribution model of high-frequency transformer, an equivalent transformation model of flux leakage distribution is proposed, and a simplified method of leakage inductance parameters considering frequency-dependence characteristics and winding structure is proposed based on the theory of flux division. Compared with other methods, this method has higher calculation accuracy and simpler conclusion formula, which can be used in practical engineering. Then a prototype model of high frequency isolation transformer was designed and manufactured, and the correctness and validity of the method were verified by simulation experiment and physical measurement. © 2021, Harbin University of Science and Technology Publication. All right reserved.
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页码：96 / 104and113
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