Modelling and control strategy of a wind energy conversion system based on a doubly-fed twin stator induction generator

Abstract EN

In this paper, we present a model and a control strategy of new Wind Energy Conversion Systems (WECS) including the wind turbine, the gearbox, the Doubly Fed Twin Stator Induction Generator (DFTSIG) driven by back to back power converters which are connected to the grid via a filter.

Between them, a capacitor is placed as a voltage DC bus.

This topology is used for great power production.

It is characterized by a better exploitation of the kinetic energy of the wind.

It allows us to maximize the capturing of energy and to improve quality of the powers forwarded to the grid.

Compared to the topology using Doubly Fed Induction generator (DFIG), the new one is more economical since it allows us to reduce maintenance and installation cost.

The control device is established by considering a simplified model with the orientation of power machine stator flux.

It is decomposed into two parts.

The first one is the DFTSIG control.

It is vector based on the orientation of the power machine stator flux, and used to maximize energy captured from the wind turbine for each wind speed.

The second part is the control of the active and reactive powers injected into the grid via the converters connected to the control machine stator.

Simulation results demonstrate the control device excellent performances using Matlab / Simulink.