1. Wind-farm power quality monitoring and output comparison with EN50160;Codd,2003
2. National Grid Transco, Appendix 1, Extracts from the Grid Code-Connection Conditions, available at www.nationalgrid.com, February 2004.
3. Control of a doubly-fed induction wind generator under unbalanced grid voltage conditions;Brekken;IEEE Trans. Energy Conver.,2007
4. Extended vector control of doubly fed machine under unbalanced power network conditions;Chomat,2002
5. Control of back-to-back PWM converters for DFIG wind turbine systems under unbalanced grid voltage;Abo-Khalil,2007