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

Yun Wang, Qiuwei Wu, Honghua Xu, Qinglai Guo and Hongbin Sun
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Yun Wang: College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China
Qiuwei Wu: Centre for Electric Power and Energy, Department of Electrical Engineering, Technical University of Denmark, Elektrovej 325, Kgs. Lyngby 2800, Denmark
Honghua Xu: Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
Qinglai Guo: Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
Hongbin Sun: Department of Electrical Engineering, Tsinghua University, Beijing 100084, China

Energies, 2014, vol. 7, issue 7, 1-17

Abstract: 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.

Keywords: 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) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
References: View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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