Fast Coordinated Control of DFIG Wind Turbine Generators for Low and High Voltage Ride-Through

Energies

Yun Wang²  Qiuwei Wu¹  Honghua Xu³  Qinglai Guo⁴ 

[1] Centre for Electric Power and Energy, Department of Electrical Engineering, Technical University of Denmark, Elektrovej 325, Kgs. Lyngby 2800, Denmark;College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China; E-Mail:;Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China; E-Mail:;Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; E-Mails:

关键词: coordinated control;    doubly-fed induction generator (DFIG);    grid side converter (GSC);    high voltage ride through (HVRT);    low voltage ride through (LVRT);    rotor side converter (RSC);   

DOI  :  10.3390/en7074140

来源: mdpi

【 摘 要 】

This paper presents a fast coordinated control scheme of the rotor side converter (RSC), the Direct Current (DC) chopper and the grid side converter (GSC) of doubly fed induction generator (DFIG) wind turbine generators (WTGs) to improve the low voltage ride through (LVRT) and high voltage ride through (HVRT) capability of the DFIG WTGs. The characteristics of DFIG WTGs under voltage sags and swells were studied focusing on the DFIG WTG stator flux and rotor voltages during the transient periods of grid voltage changes. The protection schemes of the rotor crowbar circuit and the DC chopper circuit were proposed considering the characteristics of the DFIG WTGs during voltage changes. The fast coordinated control of RSC and GSC were developed based on the characteristic analysis in order to realize efficient LVRT and HVRT of the DFIG WTGs. The proposed fast coordinated control schemes were verified by time domain simulations using Matlab-Simulink.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.