Research on LVRT capability of DFIG with demagnetization control

Author

Linyuan Zhou ; Jinjun Liu ; Sizhan Zhou ; Yangque Zhu

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´an Jiaotong Univ., Xi´an, China

fYear

2013

fDate

15-19 Sept. 2013

Firstpage

2277

Lastpage

2282

Abstract

With the stator directly connected to the grid, doubly-fed induction generator is very sensitive to grid disturbance. Demagnetization control depresses the influence of grid fault by accelerating the damping of natural stator flux linkage, improving the performance of doubly-fed induction generator. However, the influence of demagnetization control to the low voltage ride-through capability is still not clear. System performance with demagnetization control is analyzed in this paper. The influence of natural stator flux damping to the low voltage ride-through capability is also discussed in this paper and it is indicated that demagnetization control could minimum the occurrence of crowbar interruptions during balanced grid fault recovery, which is helpful to the system. Simulations have been carried out and the results demonstrated the analysis.

Keywords

asynchronous generators; fault diagnosis; machine control; power grids; stators; wind power; DFIG; LVRT capability; balanced grid fault recovery; crowbar interruption occurrence; demagnetization control; doubly-fed induction generator; grid disturbance; low voltage ride-through capability; natural stator flux linkage damping acceleration; wind energy penetration; Circuit faults; Damping; Demagnetization; Reactive power; Resistance; Rotors; Stators;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2013 IEEE

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/ECCE.2013.6646991

Filename

6646991