Constant Output Power Control Of A Wind-driven Tanddem Induction Generator

Abstract

A constant stator power controller for a wind-driven induction generator with double stator windings and a squirrel cage rotor common to both stators is described. The machine can feed power to the grid at variable speed and constant frequency. The torque of the generator is controlled by adjusting the angular displacement of one stator with respect to the other. This generator is called a tandem induction generator.A steady state model for the tandem induction generator is presented, Laboratory test results verifying the validity of the model. The paper also presents dynamic models for the wind energy conversion system for both the uncontrolled and the controlled operation of the tandem induction generator.The theoretical feasibility of the control system which eliminates all fluctuations in instantaneous output power is established.