Hybrid, multi-megawatt, medium frequency HVDC transformer for offshore wind turbines

Research output: Chapter in Book/Report/Conference proceedingConference contribution


As the offshore wind industry moves further offshore HVDC transmission is becoming increasingly popular. HVDC transformer substations are not optimised for offshore industry however, increasing costs and reducing redundancy. A modular HVDC transformer located within each wind turbine nacelle could mitigate these problems however, careful design is required to minimise losses. For example the converter topology will influence the semi-conductor and magnetic transformer losses. In this paper several transformer configurations comprising combinations of the H-Bridge and Modular Multilevel Converter topologies are modelled in the Matlab/Simulink environment. The configurations are evaluated for use in a medium frequency HVDC transformer based on their contribution to total losses, their stability and range of real and reactive power control.
Original languageEnglish
Title of host publicationIET Conference on Renewable Power Generation
Publication statusPublished - Sep 2014


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