Meeting modern grid codes with large direct-drive permanent magnet generator-based wind turbines-low-voltage ride-through

Wind Energy ◽  
2011 ◽  
Vol 15 (5) ◽  
pp. 799-810 ◽  
Author(s):  
D.D. Banham-Hall ◽  
C.A. Smith ◽  
G.A. Taylor ◽  
M.R. Irving
Keyword(s):  
Permanent Magnet ◽  
Wind Turbines ◽  
Low Voltage ◽  
Direct Drive ◽  
Low Voltage Ride Through ◽  
Grid Codes ◽  
Permanent Magnet Generator

Analysis of Low Voltage Ride-Through Capability for Variable Speed Wind Turbines Using Experimental and Measured Data

2013 ◽  
Vol 448-453 ◽  
pp. 1865-1870
Author(s):  
Xiang Yu Lv ◽  
Bo Gao ◽  
Guo Wei Cai ◽  
De Xin Li
Keyword(s):  
Permanent Magnet ◽  
Wind Turbines ◽  
Reactive Power ◽  
Low Voltage ◽  
Power Converter ◽  
Direct Drive ◽  
Low Voltage Ride Through ◽  
Full Power ◽  
Doubly Fed ◽  
Support Grid

With an increasing amount of wind energy installed, the behavior of wind turbines during grid disturbances becomes more and more important. This paper introduces the basic structures of doubly-fed wind turbines and direct-drive permanent magnet synchronous wind turbines and analyses the capability of low voltage ride through (LVRT) of the wind turbines. Finally this paper elaborates the principle and the procedures of the LVRT tests. The results of the tests show that: Doubly-fed wind turbines and direct-drive permanent magnet synchronous wind turbines are equipped with LVRT capability. The turbines are able to operate normally without disconnection and provide reactive power to support grid restoration during the dip. The direct-drive permanent magnet synchronous wind turbines are superior to the doubly-fed wind turbines on LVRT since a full-power converter is used.

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