DocumentCode :
1471408
Title :
Enhancing Low-Voltage Ride-Through Capability and Smoothing Output Power of DFIG With a Superconducting Fault-Current Limiter–Magnetic Energy Storage System
Author :
Guo, Wenyong ; Xiao, Liye ; Dai, Shaotao
Author_Institution :
Inst. of Electr. Eng., Beijing, China
Volume :
27
Issue :
2
fYear :
2012
fDate :
6/1/2012 12:00:00 AM
Firstpage :
277
Lastpage :
295
Abstract :
Two major problems that are faced by doubly fed induction generators are: weak low-voltage ride-through capability and fluctuating output power. To solve these problems, a superconducting fault-current limiter-magnetic energy storage system is presented. The superconducting coil (SC) is utilized as the energy storage device for output power smoothing control during normal operation and as a fault-current limiting inductor to limit the surge current in the stator or rotor during the grid fault. The SC can also weaken the rotor back electromotive force voltage, and thus enhance the controllability of the rotor-side converter (RSC), which helps to protect both the RSC and the gearbox. Simulation results verify the efficacy of the proposed approaches.
Keywords :
asynchronous generators; fault current limiters; fault diagnosis; machine control; power control; power convertors; superconducting coils; superconducting magnet energy storage; DFIG; RSC; doubly fed induction generators; energy storage device; fault-current limiting inductor; gearbox; grid fault; output power smoothing control; rotor; rotor back electromotive force voltage; smoothing output power fluctuation; stator; superconducting coil; superconducting fault-current limiter-magnetic energy storage system; surge current; the rotor-side converter; weak low-voltage ride-through capability; Circuit faults; Energy storage; Inductance; Power generation; Rotors; Stator windings; Doubly fed induction generator (DFIG); low-voltage ride through (LVRT); superconducting fault-current limiter (SFCL); superconducting magnetic energy storage system (SMES); wind energy;
fLanguage :
English
Journal_Title :
Energy Conversion, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8969
Type :
jour
DOI :
10.1109/TEC.2012.2187654
Filename :
6170883
Link To Document :
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