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*Modeling of Turbomachines for Control and Diagnostic Applications*

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Publishing; 1998

**Chapter 5**

**Abstract**

Generator

*and Maha Khanfara*

MATLAB/Simulink, MPPT

**1. Introduction**

**79**

Modeling and Simulation of the

Based on a Doubly Fed Induction

This chapter presents the modeling and simulation results of variable speed wind

With the global warming issues and the climate changes, there is a serious need for the use of the renewable energy resources in the electricity generation industry. Currently, the wind represents one of the most important renewable energy resources, used for generating electrical energy in the world. In terms of the total installed wind capacity, it becomes up to 539 GW across the globe in 2017 [1]. The rapid rate of the wind energy industry growth is caused by the cost-effectiveness of electricity production from wind farms, compared to electricity production cost

turbine driven by doubly fed induction generator (DFIG). The feeding of the generator is ensured through its stator directly connected to the electrical grid and by its rotor connected to the grid through two power converters, which are controlled by the pulse width modulation (PWM) technique. This configuration is the most used in the wind power generation systems. For the variable speed operation of the studied system, the maximum power point tracking strategy is applied for the turbine, and the stator flux-oriented vector control is used for the generator. The MATLAB/Simulink software is used for the system modeling and simulation. For the wind velocity model, a random wind profile is simulated, and the turbine and the generator parameters are extracted from an existing wind turbine system in the

literature. The obtained results are addressed in this chapter.

**Keywords:** wind turbine, variable speed operation, DFIG, PWM,

from fossil fuel energy [2], the stability of electricity cost [3], the short

commissioning time of wind farms [4], and the ingenuity of skillful engineers.

According to a wind market survey, the doubly fed induction generator (DFIG) is the most popular generator used in the speed variable wind turbines (SVWT) [5]. It is a wound rotor asynchronous machine which has the stator windings directly

Variable Speed Wind Turbine

*Imane Idrissi, Houcine Chafouk, Rachid El Bachtiri*

## **Chapter 5**
