Short-term voltage stability of fixed-speed wind turbines: Comparison of single and double cage

This paper studies the short-term grid voltage stability of double cage induction generators in fixed speed wind turbines. The performed analysis shows that for voltage stability studies of fixed speed wind turbines with induction generators (either single or double cage), the mechanical rotor turbine model is preferable as a detailed aerodynamic model. Simulations of the suggested modeling approaches are presented, and the influence of detailed rotor torque modeling is analyzed. The double cage induction generators show better short-term grid voltage stability performance.