Indirect-field-orientated control of an asynchronous generator with rotor-resistance adaptation based on a reference model

Abstract

This paper studies in detail a method for rotor-resistance adaptation for indirect-field orientated control of induction generators based on the reactive-power reference model. First of all, it will be shown how the adaptation procedure can be made independent of stator frequency and load torque. Secondly, the stability of the adaptation procedure will be demonstrated rigorously by means of Lyapunov theorem. Simulation results using data from two di®erent machines will be presented to validate the main contributions. Finally, the sensitivity of the algorithm to errors in other machine parameters will be investigated.