Pitch Control for Smoothing Doubly Fed Induction Generator Rotor-Side Power Fluctuations

2013 ◽  
Vol 732-733 ◽  
pp. 1110-1114
Author(s):  
Qiang Tian ◽  
Xiao Lan Wang
Keyword(s):  
Control Strategy ◽  
Pitch Angle ◽  
Pid Controller ◽  
Active Power ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Matlab Simulation ◽  
Pitch Control ◽  
Power Fluctuations ◽  
Doubly Fed

Dramatic wind speed variations result in the fluctuations of output power in DFIG. This paper presents a pitch control to suppress DFIG Rotor-side active power fluctuations. Though pitch angle changes too quickly could result in generator power fluctuations, the pitch control adopts PID controller and an angle rate limiter to prevent rapid pitch angle changes. The pitch control strategy is simulated by Matlab simulation platform, and the results have shown the correctness and validity of the pitch control.

scholarly journals Optimization Control Strategy for Large Doubly-Fed Induction Generator Wind Farm Based on Grouped Wind Turbine

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4848
Author(s):  
Shijia Zhou ◽  
Fei Rong ◽  
Xiaojie Ning
Keyword(s):  
Control Strategy ◽  
Power Output ◽  
Wind Farm ◽  
Reactive Power ◽  
Optimization Problems ◽  
Active Power ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Optimization Control ◽  
Doubly Fed

This paper proposes a grouped, reactive power optimization control strategy to maximize the active power output of a doubly-fed induction generator (DFIG) based on a large wind farm (WF). Optimization problems are formulated based on established grouped loss models and the reactive power limits of the wind turbines (WTs). The WTs in the WF are grouped to relieve computational burden. The particle swarm optimization (PSO) algorithm is applied to optimize the distribution of reactive power among groups, and a proportional control strategy is used to distribute the reactive power requirements in each group. Furthermore, the proposed control strategy optimizes the reactive power distribution between the stator and the grid side converter (GSC) in each WT. The proposed control strategy greatly reduces the number of variables for optimization, and increases the calculation speed of the algorithm. Thus, the control strategy can not only increase the active power output of the WF but also enable the WF to track the reactive power dispatching instruction of the power grid. A simulation of the DFIG WF is given to verify the effectiveness of the proposed control strategy at different wind speeds and reactive power references.

Study on operating modes of doubly fed induction generator with a short circuit fault on grid near the wind power plant

2021 ◽  
Vol 15 (1) ◽  
pp. 37-44
Author(s):  
Thai Hiep Le ◽  
◽  
Duong Hoang Phuc Tran
Keyword(s):  
Power Plant ◽  
Short Circuit ◽  
Active Power ◽  
Induction Generator ◽  
Wind Power Plant ◽  
Doubly Fed Induction Generator ◽  
Power Characteristic ◽  
Simulation Results ◽  
Doubly Fed ◽  
Short Circuit Fault

In this paper, the operating mode of a doubly fed induction generator (DFIG) wind turbine is studied in order to evaluate its fault ride-through and transient stability with a grid’s short circuit fault at near the wind power plant. Based on the structure of DFIG, external resistors are directly connected to rotor windings, then the generator operates as a wound rotor induction generator (WRIG) when there is a short circuit fault on the grid. According to the simulation results in Matlab, the active power is consumed on the crowbar resistor, causing the active power characteristic of generator is changed from high to low. As a result, the amount of excess mechanical energy is not much, so the generator be not accelerated significantly. These simulation results show that it is appropriate to use the crowbar resistor to change the power characteristic of the DFIG. Thanks to this change, the generator is still connected to the grid, stable operation both during and after a short circuit.

scholarly journals Control strategy of doubly-fed induction generator during the grid voltage swell

2019 ◽  
Vol 2019 (16) ◽  
pp. 1807-1811
Author(s):  
Zou Le ◽  
Wu Xueguang ◽  
Kou Longze ◽  
Liu Dong ◽  
Li Fangyuan ◽  
...  
Keyword(s):  
Control Strategy ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Grid Voltage ◽  
Voltage Swell ◽  
Doubly Fed

Improved Control Strategy of Wind Turbine with DFIG for Low Voltage Ride through Capability

2014 ◽  
Vol 707 ◽  
pp. 329-332
Author(s):  
Li Ling Sun ◽  
Dan Fang
Keyword(s):  
Wind Turbine ◽  
Control Strategy ◽  
Low Voltage ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Operating Characteristics ◽  
Low Voltage Ride Through ◽  
Doubly Fed ◽  
Rotor Side Converter ◽  
And Control

As the number of doubly fed induction generator (DFIG)- based wind-turbine systems continues to increase, wind turbines are required to provide Low Voltage Ride-Through (LVRT) capability, especially under the condition of grid voltage dips. This paper, depending on the operating characteristics of doubly-fed induction generator during grid faults ,deals with a protection and control strategy on rotor-side converter (RSC) to enhance the low voltage ride through capability of a wind turbine driven doubly fed induction generator (DFIG). The simulation and experiment studies demonstrate the correctness of the developed model and the effectiveness of the control strategy for DFIG-based wind-turbine systems under such adverse grid conditions.

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