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Optimization and experimental validation of medium-frequency high power transformers in solid-state transformer applications

Mohammad Amin Bahmani (Institutionen för energi och miljö, Elteknik) ; Torbjörn Thiringer (Institutionen för energi och miljö, Elteknik) ; Mohammad Kharezy
31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016; Long Beach Convention and Entertainment CenterLong Beach; United States; 20 March 2016 through 24 March 2016 p. 3043 - 3050. (2016)
[Konferensbidrag, refereegranskat]

High power isolated DC-DC converters are likely to provide solutions for many technical challenges associated with power density, efficiency and reliability in potential applications such as offshore wind farms, inter-connection of DC grids, MVDC in data centers and in future solid state transformer applications. The high power medium frequency transformer (HPMFT) is one of the key elements of such a converter to realize the voltage adaption, isolation requirements, as well as high power density. This paper describes a design and optimization methodology taking into account the loss calculation, isolation requirements and thermal management. Incorporating this design methodology, an optimization process with a wide range of parameter variations is applied on a 50 kW, 1 / 3 kV, 5 kHz transformer to find the highest power density while the efficiency, isolation, thermal and leakage inductance requirements are all met. The optimized transformers are then manufactured and will be presented in this paper.


Article number 7468297



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Denna post skapades 2016-05-19. Senast ändrad 2016-07-06.
CPL Pubid: 236722

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik

Ämnesområden

Energi
Elkraftteknik

Chalmers infrastruktur