1. DYNAMIC BEHAVIOR OF THE DOUBLY FED
INDUCTION GENERATOR DURING THREE-PHASE
VOLTAGE DIPS
Presented by:
Ebbin Daniel
U80380223

2. OBJECTIVE
• To study the charecterstics of doubly fed induction generators under voltage dips.
• The Rotor side controller (RSC) as well as the grid side controller (GSC) is used.
• Three phase grid output and stator side flux is measured under voltage dips.

3. INTRODUCTION
• To study the dynamic behavior of the DFIG system.
• Stator is directly connected to the Grid.
• Rotor is connected to the Rotor Side Control (RSC) and the Grid side control (GSC)
• DFIG system is sensitive to voltage dips.
• Each dip causes reduction in the stator flux.
• System voltage is altered.

4. PROPOSED SYSTEM

5. WIND TURBINE
• Generator speed (pu)
• Simulink input of the generator speed in pu based on the nominal speed of the
• Generator.
• Pitch angle (deg)
• Simulink input of the pitch angle.
• Wind speed (m/s)
• Simulink input of the wind speed in m/s.
• Tm (pu)
• Simulink output of the mechanical torque of the wind turbine, in pu of the nominal
• generator torque. The nominal torque of the generator is based on the nominal
• generator power and speed.

6. ASYNCHRONOUS MOTOR
• The Asynchronous Machine block implements a three-phase asynchronous machine
(wound rotor, single squirrel-cage or double squirrel-cage).
• It operates in either generator or motor mode. The mode of operation is dictated by
the sign of the mechanical torque:
• If Tm is positive, the machine acts as a motor.
• If Tm is negative, the machine acts as a generator.

7. ROTOR SIDE CONTROL

8. GRID SIDE CONTROL

9. MODEL DESCRIPTION

10. OUTPUT
• Three phase voltage after voltage dip
• Stator flux after voltage dip

11. REFERENCES
• Dynamic Behavior of the Doubly Fed Induction Generator During Three-Phase
Voltage Dips
Jes´us L´opez, Member, IEEE, Pablo Sanchis, Member, IEEE, Xavier Roboam, Member, IEEE, and Luis Marroyo, Member, IEEE
• Simulation Comparisons and Implementation of Induction Generator Wind Power
Systems Yu Zou, Malik E. Elbuluk, Senior Member, IEEE, and Yilmaz Sozer, Member, IEEE
• Study of Fault Current Characteristics of the DFIG : Considering Dynamic Response
of the RSC
Xiangping Kong, Zhe Zhang, Xianggen Yin, Member, IEEE, and Minghao Wen