Abstract—The aim of this paper is to present the complete modeling and simulation of wind turbine driven doubly-fed induction generator which feeds ac power to the utility grid. For that, two pulse width modulated voltage source converters are connected back to back between the rotor terminals and utility grid via common dc link. The grid side converter controls the power flow between the DC bus and the AC side and allows the system to be operated in sub-synchronous and super synchronous mode of operation. The proper rotor excitation is provided by the machine side converter. The complete system is modeled and simulated in the MATLAB Simulink environment in such a way that it can be suited for modeling of all types of induction generator configurations. The model makes use of rotor reference frame using dynamic vector approach for machine model.

Index Terms—doubly-fed induction generator (DFIG), pulse width modulation (PWM), dynamic vector approach, utility grid, wind energy conversion systems

B.Chitti Babu is with the National Institute of Technology, Rourkela, INDIA. (corresponding author to provide phone: 91-6612462417; e-mail: bcbabunitrkl@ieee.org).
K.B.Mohanty is with the Electrical Engineering Department, National Institute of Technology, Rourkela, INDIA. (e-mail: kbmohanty@nitrkl.ac.in).

Cite: B.Chitti Babu and K.B.Mohanty, "Doubly-Fed Induction Generator for Variable Speed Wind Energy Conversion Systems- Modeling & Simulation," International Journal of Computer and Electrical Engineering vol. 2, no. 1, pp. 141-147, 2010.