COMPARISON OF PI AND HYSTERESIS CONTROL OF THE ACTIVE AND REACTIVE POWER OF DOUBLY FED INDUCTION GENERATOR FED BY THREE-LEVEL INVERTER

Abstract

The present article proposes the control of the active and reactive powers, independently of each other, of a DFIG (Doubly Fed Induction Generator) used generally in the production of the electric energy and more especially in wind turbines.
The machine is connected to a public network and works as a generator. Its rotor is fed by a three levels inverter. We propose to control the DFIG by two strategies, the first one is based on the use of classic PI controllers and the second one is based on the use of hysteresis regulators. Then we will end up by a comparison of the performances obtained by the two control strategies.