Modelling, Analysis and Control of High-Power Offshore Wind Power Converter
Author
Jiang, Yuxin
Term
4. term
Education
Publication year
2025
Abstract
This thesis models, analyzes, and designs a high-power offshore wind power converter based on a three-level neutral-point-clamped (3L-NPC) voltage source converter. Motivated by the need for reliable and efficient grid integration, it formulates the problem of converting large wind power to grid-compliant electricity and focuses on grid-connected control strategies. The work surveys relevant state of the art, including grid codes, offshore wind turbine architecture and generator options (DFIG and PMSG), modulation methods (SPWM and SVPWM), coordinate transformations, and maximum power point tracking (MPPT) for wind. A system architecture is specified, and the grid-side converter and its control are designed for grid connection and power/current regulation. A hardware platform is prepared, and the design is evaluated through simulation and hardware-in-the-loop verification. Detailed performance figures and experimental results are not included in the provided excerpt.
Dette speciale modellerer, analyserer og designer en høj-effekt offshore vindkraftomformer baseret på en tre-niveaus neutralpunktklemmet (3L-NPC) spændingskildeomformer. Med udgangspunkt i behovet for sikker og effektiv netintegration formuleres problemstillingen omkring konvertering af stor vindenergi til netkvalitets-el og udvikling af nettilsluttede styringsstrategier. Arbejdet gennemgår relevant state-of-the-art, herunder netkoder, opbygning af offshore vindmøller og generatorvalg (DFIG og PMSG), modulationsmetoder (SPWM og SVPWM), koordinattransformationer samt maksimal effektpunktsporing (MPPT) for vind. Der specificeres en systemarkitektur, og netsideomformeren og dens styring designes med fokus på nettilslutning og regulering af strøm/effekt. En hardwareplatform etableres, og løsningen vurderes via simulering og hardware-in-the-loop verifikation. Uddybede måleresultater og præstationsdata fremgår ikke af det viste uddrag.
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