Low voltage ride through for DFIG wind turbines using passive impedance networks

Author

Yan, Xiangwu ; Venkataramanan, Giri ; Flannery, P.S. ; Wang, Yang

Author_Institution

Dept. of Electr. Eng., North China Electr. Power Univ., Baoding, China

fYear

2009

fDate

6-7 April 2009

Firstpage

1

Lastpage

9

Abstract

This paper presents an approach to utilize a passive impedance network in series at the stator side of a typical DFIG wind turbine for the purpose of voltage sag ride through. A control strategy that enables the passive impedance network to engage and stabilize the stator flux during grid voltage sag events has been studied. Simulation results demonstrates that electromagnetic torque and rotor current meet the requirements of new regulator codes, even at zero voltage remaining with uninterrupted current feeding into the grid. Due to its topology and control strategy, the proposed system is easy to control, capable of off-line operation for high efficiency and economic in manufacturing and maintenance.

Keywords

asynchronous generators; passive networks; power grids; power supply quality; rotors; stators; wind turbines; DFIG wind turbines; control strategy; doubly fed induction generator; dynamic voltage recovery; electromagnetic torque; grid voltage sag events; low voltage ride through; passive impedance networks; regulator codes; rotor current; stator flux; stator side; uninterrupted current feeding; voltage sag ride through; Control systems; Impedance; Low voltage; Network topology; Regulators; Stators; Torque; Voltage control; Voltage fluctuations; Wind turbines; doubly fed induction generator (DFIG); dynamic voltage recovery; voltage sag ride-through; wind turbine;

fLanguage

English

Publisher

ieee

Conference_Titel

Sustainable Power Generation and Supply, 2009. SUPERGEN '09. International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-4934-7

Type

conf

DOI

10.1109/SUPERGEN.2009.5348156

Filename

5348156