Modeling and Simulation of Doubly-Fed Wind Power Generators Based on PSCAD/EMTDC

2013 ◽  
Vol 392 ◽  
pp. 475-479
Author(s):  
Le Wang ◽  
Lin Guan ◽  
Xin Ming Fan
Keyword(s):  
Wind Power ◽  
Reactive Power ◽  
Operating Characteristics ◽  
Field Orientation ◽  
Power Generators ◽  
Response Characteristics ◽  
Active And Reactive Power ◽  
Power Decoupling ◽  
Wind Power Generator ◽  
Doubly Fed

This paper builds the mathematical model of a doubly-fed wind power generator (DFIG) which is widely used in wind power generation. Based on stator magnetic field orientation vector technique, active and reactive power decoupling control strategy is constructed. Based on the software package PSCAD/EMTDC, the grid-connected system of DFIG is modeled, and the dynamic response characteristics of generators active and reactive power on ramp change of wind speed conditions is simulated and analyzed. The simulation results show that the variable pitch DFIG has good operating characteristics and the model is correct.

Design and Simulation of Variable Speed Constant Frequency Brushless Doubly Fed Wind Power Generator

2011 ◽  
Vol 383-390 ◽  
pp. 537-542
Author(s):  
Kai Jun Wu ◽  
Yan Yan Wang
Keyword(s):  
Wind Power ◽  
Reactive Power ◽  
Variable Structure ◽  
Constant Frequency ◽  
Power Generator ◽  
Structure Control ◽  
Power Decoupling ◽  
Wind Power Generator ◽  
Doubly Fed ◽  
And Control

Brushless Doubly-fed Machine (BDFM) is a new inverter-driven induction motor, and it has broad prospects in wind power generation. This paper analyses the structure and VSCF electricity generating principle of a cascade Brushless Doubly fed Wind Power Generator, deduces the BDFG’s mathematical model, The variable structure control (VSC) was used to the active and reactive power decoupling control of the BDFM, analysis the relation of electromagnetism and energy balance .Finally, simulation and analysis of the whole system and control strategy are carried through in matlab/simulink soft. According to these results, the correct of parameters and simulation model for BDFM is proved.

Simulation and Control of Doubly Fed Induction Generator (DFIG) Used in Wind Turbines by Using Genetic Algorithm

2016 ◽  
Vol 10 (8) ◽  
pp. 1
Author(s):  
Faraz Chamani ◽  
Mohammad Satkin
Keyword(s):  
Power Systems ◽  
Wind Power ◽  
Wind Turbines ◽  
Reactive Power ◽  
Wind Farms ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Transient Faults ◽  
Active And Reactive Power ◽  
Doubly Fed

Wind energy is one of the extraordinary sources of renewable energy due to its clean character and free availability. With increase in wind power penetration, the wind farms are directly influencing the power systems. The majority of wind farms are using variable speed wind turbines equipped with doubly fed induction generators (DFIG) due to their advantages over other wind turbine generators (WTGs). Therefore, the analysis of wind power dynamics with the DFIG wind turbines has become a very important research issue, especially during transient faults. In this article, a controller is provided to control the active and reactive power of a wind system equipped with doubly fed induction generator. The generator is connected to the grid by a back to back converter that gets benefit from control system known as single periodic controller. Grid and generator side converters respectively control the generator speed and reactive power using proposed controller. In order to increase the accuracy of controller, we optimized its PI parameters using genetic optimization algorithm. Finally, simulation results conducted by the MATLAB software are shown. The results of simulation gained through this system, show the capability of proposed controller under error conditions for controlling active and reactive power and also elimination of harmonics caused by non-linear load.

The Strategy Research for Doubly-Fed Wind Power Generator Active-Reactive Hybrid Additional Damping Control

2013 ◽  
Vol 805-806 ◽  
pp. 320-326
Author(s):  
Wei Wei ◽  
Li Jie Ding ◽  
Ying Liu ◽  
Gan Li
Keyword(s):  
Wind Power ◽  
Reactive Power ◽  
Control Method ◽  
Hybrid Control ◽  
Control Function ◽  
Operating Conditions ◽  
Constant Frequency ◽  
Wind Generator ◽  
Wind Power Generator ◽  
Doubly Fed

Based on the traditional single power control of the doubly-fed wind generator, this paper proposes an active/reactive power hybrid control method of the doubly-fed wind generator, which associates the operation characteristics of the doubly-fed wind generator with the operating conditions of the power grid. This proposed method incorporates the power variation in the system transmission channel into the calculation of the wind generator power output, and employs the additional control function of the wind generator to increase system damping and restrain system power oscillation. At the same time, the proposed method controls the wind generator to capture the maximum wind power when it is operating at a variable speed with a constant frequency. Moreover, because the proposed method decouples the control of active and reactive power, the converter capacity can be reduced. Simulations in a 9-generator 13-bus system and results indicate the effectiveness and robustness of the proposed method.

Research of Brushless Doubly-Fed Generator for Grid-Connection and Power Control

2014 ◽  
Vol 678 ◽  
pp. 417-422
Author(s):  
Yu Liu ◽  
Zhong Chao Wei ◽  
Xin Mai Gao ◽  
Xi Chen ◽  
Xue Fan Wang ◽  
...  
Keyword(s):  
Reactive Power ◽  
Control Method ◽  
Electrical Machine ◽  
Voltage Control Strategy ◽  
Grid Connection ◽  
Active And Reactive Power ◽  
Machine Theory ◽  
Doubly Fed ◽  
Doubly Fed Generator ◽  
Doubly Fed Machine

To reliably realize the grid-connection generating of brushless doubly-fed machine (BDFM), this paper firstly focuses on some essential issues, such as amplitude, frequency and phase of power winding voltage; the control of active and reactive power. Deducing the control method of power winding voltage amplitude, frequency and phase based on basic electrical machine principle. Referring synchronous machine theory, the modulation principle of active and reactive power for BDFM is obtained. Then, the connection progress to grid is researched by setting up the control platform based on DSP. The experimental results show that the amplitude, frequency and phase of power winding voltage are effectively controlled and the active and reactive power could be regulated when adopting the decoupled voltage control strategy. This control method provides a practical realization manner in the application of wind power generation and so on.

Effect of Metal Coating on FRP Blade Lightning Failure for Wind Power Generators

2005 ◽  
Author(s):  
H. Sakamoto ◽  
A. Takebayashi ◽  
M. Hanai
Keyword(s):  
Wind Power ◽  
Experimental Situation ◽  
Metal Coating ◽  
Testing Laboratory ◽  
Power Generators ◽  
Full Size ◽  
Wind Power Generator ◽  
Power Testing ◽  
Blade Failure ◽  
Wind Power Generators

In Japan, with the recent increase in wind power generator installations, the incidence of lightning damage to FRP blades is increasing. Lightning damage is a significant issue in Japan since lightning in Japan seems severer than that in Europe or the US. In Kochi, Japan, six 600-750 kW grade generators have been installed, and some have been damaged by lightning several times. To resolve this problem, the Kochi University of Technology received a request in 2002 from the Kochi prefectural government for research into lightning protection. After surveying the literature and questioning related organizations such as NREL and Toray USA, experiments to protect against lightning damage to FRP blades of wind power generators were planned. Half size models and two 1/4 parts of a full size 250kW blade were prepared as specimens for this research. The method investigated to protect against lightning damage was metal coating. The aim being to protect against blade failure by using metal coating in actual field situations; by using a 1/2 size model and the full size blade specimens in an experimental situation. As in previous experiments, these ones were mainly conducted in the Toshiba Hamakawasaki High Voltage High Power Testing Laboratory. This Testing Laboratory is one of the biggest test laboratories for experiments involving high voltages and large currents.

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