Optimization Design and Experimental Verification of Nanocrystalline High-frequency Transformer

被引：0

作者：

Zhang, Pengning ^{[1
]}

Li, Wei ^{[1
]}

Li, Pengyang ^{[1
]}

Yang, Yajin ^{[1
]}

Li, Bofan ^{[1
]}

Zhang, Jian ^{[2
]}

机构：

[1] School of Mechanical and Electrical Engineering, China University of Mining and Technology(Beijing), Beijing

[2] China Electric Power Research Institute, Beijing

来源：

Gaodianya Jishu/High Voltage Engineering | 2024年 / 50卷 / 10期

基金：

中国国家自然科学基金;

关键词：

core loss; high-frequency transformer; leakage inductance; magnetization properties; optimization design; winding loss;

D O I：

10.13336/j.1003-6520.hve.20240660

中图分类号：

学科分类号：

摘要：

In practical engineering, power electronic transformers have gradually become an indispensable and important part of many fields such as new energy grids. The optimization design of high-frequency transformer, as a key device, has become increasingly important. Firstly, the improved Steinmetz empirical formula (IGSE) was used to calculate the core loss of a high-frequency transformer, and the Dowell method was used to calculate the AC winding coefficient of copper foil at high frequency. Secondly, the influences of winding cross transposition on the leakage magnetic field and the conductor current density inside the iron core window were analyzed, the leakage inductance formula based on the energy method was derived, and the six-node thermal network model was established by comprehensively considering the influence of the size of the radiator on the temperature rise. Finally, a high-frequency transformer optimization design method based on free parameter scanning method was proposed, and the Pareto front of the optimization design scheme was obtained. In order to verify the rationality of the design process, a prototype of a 15 kW/5 kHz, efficiency of 99% and power density of 16.79 kW/L, high-power density nanocrystalline high-frequency transformer was designed and manufactured, an experimental platform was built to test the leakage inductance, core loss, and winding loss of the prototype, and it was found that the deviations from the design values were 8.76%, 4.02%, and 2.76%, respectively. The correctness of the optimization design method was verified, which provided a theoretical and experimental bases for the research of high-efficiency, high-power density and large-capacity high-frequency transformers. © 2024 Science Press. All rights reserved.

引用

页码：4475 / 4486

页数：11

共 33 条

[1]

HAN Yu, YANG Fuyao, LIU Yang, Et al., Development status and prospect of high frequency transformers and core materials for large-scale renewable energy consumption, High Voltage Engineering, 50, 9, pp. 3965-3977, (2024)

[2]

ZHANG Pengning, XIANG Xueyan, Li Wei, Et al., High frequency transformer technology for power electronic transformer, High Voltage Engineering, 48, 12, pp. 4996-5011, (2022)

[3]

CHEN N, ZHA K P, QU H T, Et al., Economy analysis of flexible LCC-HVDC systems with controllable capacitors, CSEE Journal of Power and Energy Systems, 8, 6, pp. 1708-1719, (2022)

[4]

KIM I, JANG W Y, KIM M W, Et al., Design and control of integrated DC-DC converter for electric vehicles, 2022 IEEE Energy Conversion Congress and Exposition, pp. 1-6, (2022)

[5]

LEI Yu, LI Guanghui, WANG Weisheng, Et al., Comparison of Impedance characteristics and oscillation mechanism for grid following and grid forming renewable energy, Proceedings of the CSEE, pp. 1-15

[6]

ZHANG Hao, ZHANG Chuanlei, HAN Fuhui, Review on the research of power electronic transformer, Electric Engineering, 17, pp. 183-185, (2023)

[7]

VALEDSARAVI S, EL AROUDI A, MARTINEZ-SALAMERO L., Review of solid-state transformer applications on electric vehicle DC ultra-fast charging station, Energies, 15, 15, (2022)

[8]

KONG X Y, FAN X M, ZHOU J Q, Et al., A multiple-AC-ports power electronic transformer, International Power Electronics Conference, pp. 2659-2665, (2022)

[9]

LI Shuang, Design of power electronic transformer and its application in photovoltaic grid-connected system, (2023)

[10]

HADIZADE A, NASAB J N, AGHAEI M, Et al., Investigations on equivalent circuit models of high frequency transformers, 9th Annual Power Electronics, Drives Systems and Technologies Conference, pp. 475-480, (2018)

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