1. Why is DFIG not considered for motoring applications for speed range from zero to rated speed?
2. Equation relates stator voltage, rotor voltage, and torque. Use a spreadsheet program to develop a macro to plot a family of curves in relation to the input parameters.
Assume the following machine parameters Rs = 0.598 Ω, Rr= 0.271 Ω, Lls = 3 mH, Llr = 1.2 mH, Vs = 220 V, Vr = 10 V, p = 4, and ωe = 377 rad/s. 11.5 Study the article by Da Silva et al.19 Propose a modern and contemporary circuit and control techniques to achieve a similar system performance for a DFIG wind- or hydro-based energy system
