DocumentCode :
3566278
Title :
A new wind turbine interface to MVDC grid with high frequency isolation and input current shaping
Author :
Daniel, Michael T. ; Krishnamoorthy, Harish S. ; Enjeti, Prasad N.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX, USA
fYear :
2014
Firstpage :
1924
Lastpage :
1930
Abstract :
This work introduces a new approach using high frequency (HF) isolation for interfacing next-generation offshore wind turbine generators (WTGs) to medium voltage DC (MVDC) collection grids, a necessity for the continued development of offshore wind resources as farms are sited further out to sea. Initial analysis of the proposed approach is provided, as well as a practical design example for reproduction of results and prototype design guidance for further development of the concept. Detailed simulation results demonstrate converter operation from full rated power down to 25% rated power. The WTG displacement power factor is found to be 0.95 leading. Simulation results further confirm near-sinusoidal WTG and transformer current, continuous output current, and stiff DC link voltage, all within specified ripple tolerances.
Keywords :
high-frequency transformers; power convertors; power factor; power grids; wind power plants; wind turbines; HF isolation; MVDC collection grids; WTG displacement power factor; continuous output current; converter operation; high frequency isolation; input current shaping; medium voltage DC collection grids; near-sinusoidal WTG; next-generation offshore wind turbine generators; offshore wind resources; prototype design guidance; stiff DC link voltage; transformer current; Generators; HVDC transmission; Inverters; Power harmonic filters; Rectifiers; Switches; Voltage control; Delta Control; High Frequency Transformer (HFT); Hysteresis Control; MVDC; Multilevel Rectifier; NPC Inverter; Offshore Wind Farm; Resonant AC Link; Wind Turbine Generator (WTG);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE
Type :
conf
DOI :
10.1109/IECON.2014.7048765
Filename :
7048765
Link To Document :
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