Practical Study of Mixed-Core High Frequency Power Transformer

被引:0
作者
Paul, Arun Kumar [1 ]
机构
[1] MS Elect Devices Worldwide Pvt Ltd, Res & Dev, 22 Mistry Ind Estate,Cross Rd A,Andheri East, Mumbai 400093, India
来源
MAGNETISM | 2022年 / 2卷 / 03期
关键词
hot spot temperature; mixed-core magnetic circuit; power electronics systems; power electronic transformer (PET); soft magnetic materials; DESIGN; MODEL;
D O I
10.3390/magnetism2030022; 10.3390/magnetism2030022
中图分类号
O59 [应用物理学];
学科分类号
摘要
The design of medium- to high-frequency power electronics transformer aims not only to minimize the power loss in the windings and the core, but its heat removal features should also allow optimal use of both core and copper. The heat removal feature (e.g., thermal conduction) of a transformer is complex because there exist multiple loss centers. The bulk of total power loss is concentrated around a small segment of the core assembly where windings are overlaid. The primary winding is most constrained thermally. For superior use of core and copper, the temperature rise in different segments of the transformer should be well below their respective safe operating limits. In practice, cores of same soft-magnetic materials are traditionally used. To achieve superior temperature profile and for better long-term performance, this article proposes to use the mixed-core configuration. The new core(s) would replace the parent ones from the segment where windings are laid. The characteristic features of new cores would share increased burden of heat removal from the transformer. To obtain the qualitative insight of magnetic and thermal performance, the proposed mixed-core transformer would be thoroughly validated practically in two different high-power applications. In the first case, the core is always energized to its rated value, and in the second one, windings are always energized at respective rated current capacity.
引用
收藏
页码:306 / 327
页数:22
相关论文
共 43 条
[1]  
Adrian Pleșca, 2020, Journal of Advanced Thermal Science Research, V7, P22, DOI [10.15377/2409-5826.2020.07.3, 10.15377/2409-5826.2020.07.3, DOI 10.15377/2409-5826.2020.07.3]
[2]  
Bahamani M., 2016, Ph.D. Thesis
[3]   Accurate Evaluation of Leakage Inductance in High-Frequency Transformers Using an Improved Frequency-Dependent Expression [J].
Bahmani, M. Amin ;
Thiringer, Torbjorn .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2015, 30 (10) :5738-5745
[4]   Design of Leakage Inductance in Resonant DC-DC Converter for Electric Vehicle Charger [J].
Choi, Jung-Muk ;
Byen, Byeng-Joo ;
Lee, Yong-Jin ;
Han, Dong-Hwa ;
Kho, Hyeong-Seog ;
Choe, Gyu-Ha .
IEEE TRANSACTIONS ON MAGNETICS, 2012, 48 (11) :4417-4420
[5]  
Costinett D, 2013, APPL POWER ELECT CO, P9, DOI 10.1109/APEC.2013.6520178
[6]   A Comparative Study: Dynamic and Thermal Behavior of Nanocrystalline and Powder Magnetic Materials in a Power Converter Application [J].
Hilal, A. ;
Raulet, M. A. ;
Martin, C. ;
Sixdenier, F. .
JOURNAL OF ELECTRONIC MATERIALS, 2015, 44 (10) :3768-3776
[7]   Optimized transformer design: Inclusive of high-frequency effects [J].
Hurley, WG ;
Wolfle, WH ;
Breslin, JG .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 1998, 13 (04) :651-659
[8]   Optimizing the AC resistance of multilayer transformer windings with arbitrary current waveforms [J].
Hurley, WG ;
Gath, E ;
Breslin, JG .
IEEE TRANSACTIONS ON POWER ELECTRONICS, 2000, 15 (02) :369-376
[9]  
Jaritz M., 2013, 2013 15th European Conference on Power Electronics and Applications (EPE), P1, DOI [DOI 10.1109/EPE.2013.6634624, 10.1109/EPE.2013.6634624]
[10]  
Jimenez H.O., 2013, Masters Thesis