scholarly journals The Requirements and Technical Analysis of Low Voltage Ride Through for the Doubly-Fed Induction Wind Turbines

2011 ◽  
Vol 12 ◽  
pp. 799-807 ◽  
Author(s):  
Chen-guang Niu ◽  
Guan-qi Liu
Keyword(s):  
Wind Turbines ◽  
Low Voltage ◽  
Technical Analysis ◽  
Low Voltage Ride Through ◽  
Doubly Fed

scholarly journals Enhancement of the Dynamic Behavior of Grid-Connected DFIG Based Wind Turbines by using Fuzzy Logic Controller under LVRT Conditions

2019 ◽  
Vol 9 (2) ◽  
pp. 3164-3172
Keyword(s):  
Fuzzy Logic ◽  
Wind Turbines ◽  
Fuzzy Logic Controller ◽  
Low Voltage ◽  
Electrical Power ◽  
Control Technology ◽  
Low Voltage Ride Through ◽  
Induction Generators ◽  
Doubly Fed Induction Generators ◽  
Doubly Fed

In recent years, due to the interconnection of large capacity wind turbines to the power grid lead, there are serious issues in the stability of Grid and generation of electrical power. Also, it is showing effect on the dynamic performance of the electrical power systems. To maintain stability during sudden changes in the grid, the LVRT (Low Voltage Ride Through) capability of the Wind Turbines is one of the prime requirements. Wind turbines attached to DFIG (Doubly Fed Induction Generators) are advantageous which have LVRT capability at limited extent. In this paper, the elaborated discussion of the LVRT of Wind turbines shafted to DFIG's in the Grid. It also presents the complete description of the sudden changes in the systems like transient characteristics and the Doubly Fed Induction Generators dynamic response at the time of grid voltage faults (Symmetrical and Asymmetrical). The latest rotor side control technology is displayed in this paper for DFIG and wind turbines with improved capacity of low voltage ride through at the time of severe grid voltage sags. A Fuzzy Logic controller-based control technology is introduced in this paper which performs the balancing the rotor-side voltage and short circuits during the disturbances in the Grid. The advantage in this proposed control scheme is that it reduces the additional cost and reliability issues. So, the DFIG is efficient and usability company norms are satisfied with the proposed Fuzzy logic controller compared to regular controller like PI controller. The performance of the proposed system is simulated and verified in the computer. The results are displayed and it conclude that the control strategy of LVRT capability for Grid connected DFIG based wind turbine systems with Fuzzy Logic Controller are more effective than the conventional control Methods.

scholarly journals Low-Voltage Ride-Through Techniques in DFIG-Based Wind Turbines: A Review

2020 ◽  
Vol 10 (6) ◽  
pp. 2154 ◽  
Author(s):  
Boyu Qin ◽  
Hengyi Li ◽  
Xingyue Zhou ◽  
Jing Li ◽  
Wansong Liu
Keyword(s):  
Power Generation ◽  
Wind Power ◽  
Wind Turbines ◽  
Internal Control ◽  
Low Voltage ◽  
Wind Power Generation ◽  
Low Voltage Ride Through ◽  
Protection Circuits ◽  
Doubly Fed ◽  
And Control

In recent years, considerable advances were made in wind power generation. The growing penetration of wind power makes it necessary for wind turbines to maintain continuous operation during voltage dips, which is stated as the low-voltage ride-through (LVRT) capability. Doubly fed induction generator (DFIG)-based wind turbines (DFIG-WTs), which are widely used in wind power generation, are sensitive to disturbances from the power grid. Therefore, several kinds of protection circuits and control methods are applied to DFIG-WTs for LVRT capability enhancement. This paper gives a comprehensive review and evaluation of the proposed LVRT solutions used in DFIG-WTs, including external retrofit methods and internal control techniques. In addition, future trends of LVRT solutions are also discussed in this paper.

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