Early validation of resonant dc/dc converter for wind turbines connected to MVDC grids

Konferenz: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.05.2019 - 09.05.2019 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2019

Seiten: 9Sprache: EnglischTyp: PDF

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Dincan, Catalin; Kjaer, Philip (Aalborg University, Denmark)

A variant of the single phase – series resonant converter is proposed as a candidate for wind turbines connected to MVDC grids. The concept has the LC resonant tank located on the secondary side of the high turns-ratio transformer and operated with variable frequency and phase shift modulation. The new modulation strategy, entitled pulse removal technique, keeps the transformer flux constant from nominal frequency down to DC. To increase the technology readiness level, two medium voltage experimental setups have been assembled and their operation is described: a 10 kW, 500V to 5000V proof of concept converter and a soft-switching characterization setup with target 6.5kV devices.