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A Novel Oil-immerse...
A Novel Oil-immersed Medium Frequency Transformer for Offshore HVDC Wind Farms
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- Kharezy, Mohammad (author)
- RISE,Mätteknik,Chalmers University of Technology, Sweden,Chalmers tekniska högskola
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- Hedekvist, Per Olof (thesis advisor)
- RISE,Mätteknik
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- Serdyuk, Yuriu (thesis advisor)
- Chalmers University of Tecnology, Sweden
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- Hammarström, Thomas (thesis advisor)
- Chalmers University of Tecnology, Sweden
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- Backhaus, Karsten (opponent)
- Technical University of Dresden, Germany
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(creator_code:org_t)
- Gothenburg, 2020
- English 110 s.
- Related links:
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Abstract
Subject headings
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- In this project, a design of an oil type medium frequency transformer for offshore wind farm applications is proposed. The design is intended for applications when series coupling of the output of the DC/DC converters of the wind turbine on their secondary side is done to achieve a cost-effective high voltage solution for collecting energy from offshore wind parks. The focus of the work is on the insulation design of the high voltage side of a medium frequency transformer where the magnetic design constraints should also be satisfied.Above all, a proof of concept is made demonstrating a possible solution for the design of the transformer for such a DC/DC converter unit. The transformer suggested is using oil/paper as insulation medium. Furthermore, characterisation of an eco-friendly biodegradable transformer oil for this type of HVDC transformer application is made. Moreover, an introduction of reliable high frequency characterisation test methods to medium frequency transformer designers is made. In addition, the Non-Linear Maxwell Wagner (NLMW) relations are further developed to form a method for the development of an HVDC MFT transformer. All in all, the DC series concept has been further developed one step closer to pre-commercialization, i.e. from TRL 1 to about 2.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- prototype design methodology
- finite element analysis
- HVDC insulation design
- medium frequency transformer
- Wind energy
- DC-DC power converters
Publication and Content Type
- vet (subject category)
- lic (subject category)
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