Sensorless control of stand-alone Doubly Fed induction generator with an adaptive observer

DANIEL G. FORCHETTI; GUILLERMO O. GARCÍA; MARÍA I. VALLA

Cambridge, UK

Congreso; Industrial Electronics, 2008. ISIE 2008. IEEE International Symposium on; 2008

A Sensorless control strategy for a Doubly–Fed(wound rotor) Induction Machine working with variable speedin stand alone power system is presented in this paper. ALuenberger observer is used to estimate the stator flux, whilean adaptive scheme modifies the rotor position required in thestator flux estimation. Field oriented control loops are developedto regulate stator voltage magnitude and frequency. The presentproposal behaves very well during steady state, start–up, varyingspeed or electric load changes even under parameter uncertainties.Extensive simulation results are presented to validate theproposal.