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Coordinated control of an HVDC link and doubly fed induction generators in a large offshore wind farm

Xiang, D.W.; Ran, L.; Bumby, J.R.; Tavner, P.J.; Yang, S.C.

Coordinated control of an HVDC link and doubly fed induction generators in a large offshore wind farm Thumbnail


Authors

D.W. Xiang

L. Ran

J.R. Bumby

P.J. Tavner

S.C. Yang



Abstract

Doubly fed induction generators (DFIGs) are an economic variable-speed solution for large wind turbines while high-voltage dc (HVdc) transmission is being considered for the grid connection of some offshore wind farms. This paper analyzes the need for coordinating the control of the DFIGs and the HVdc link so that the two topologies can work together, giving system designers and operators a choice that may be useful in some applications. It is desired that individual generators be controlled for power tracking in a way similar to that used when they are connected directly to an ac grid, although a grid voltage reference for the DFIG control is no longer available as an independent source in this case. The study shows that machine control should explicitly maintain the flux level, which then allows the HVdc link to regulate the local system frequency and, indirectly, voltage amplitude. Interactions between DFIGs and the HVdc link are investigated and simulations performed to verify the proposed control strategy.

Citation

Xiang, D., Ran, L., Bumby, J., Tavner, P., & Yang, S. (2006). Coordinated control of an HVDC link and doubly fed induction generators in a large offshore wind farm. IEEE Transactions on Power Delivery, 21(1), 463-471. https://doi.org/10.1109/tpwrd.2005.858785

Journal Article Type Article
Publication Date 2006-01
Deposit Date May 27, 2008
Publicly Available Date Mar 29, 2024
Journal IEEE Transactions on Power Delivery
Print ISSN 0885-8977
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 21
Issue 1
Pages 463-471
DOI https://doi.org/10.1109/tpwrd.2005.858785
Keywords Doubly fed induction generator, Frequency, High-voltage dc (HVdc) transmission, Real and reactive power, Voltage, Wind energy, Back PWM converters, Turbines.
Publisher URL http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?isnumber=33198&arnumber=1564232&count=85&index=57

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