Vector control strategy for a doubly-fed stand-alone induction generator

A voltage and frequency control for a stand-alone doubly-fed induction generator is presented in this paper. The control strategy consists of a simple vector control with impressed rotor currents. This strategy allows generating constant frequency and voltage with variable mechanical speed. Experimental results where obtained using a 5.5 kW induction machine. The behavior of the voltage and frequency, under variable speed and load, are shown. The experimental results confirm the feasibility of this proposal.