Modeling and control of modern wind turbine systems: An introduction

TL;DR

This chapter introduces the modeling and control strategies for modern wind turbine systems, focusing on electrical components, aerodynamics, and control systems, supported by simulation results demonstrating system behavior.

Contribution

It provides a comprehensive overview of modeling and control techniques for wind turbines, including detailed analysis of electrical components and control systems, with simulation validation.

Findings

Effective control of power flow in wind turbines

Simulation results demonstrate system stability

Detailed modeling of electrical and aerodynamic components

Abstract

This chapter provides an introduction to the modeling and control of power generation from wind turbine systems. In modeling, the focus is on the electrical components: electrical machine (e.g. permanent-magnet synchronous generators), back-to-back converter (consisting of machine-side and grid-side converter sharing a common DC-link), mains filters and ideal (balanced) power grid. The aerodynamics and the torque generation of the wind turbine are explained in simplified terms using a so-called power coefficient. The overall control system is considered. In particular, the phase-locked loop system for grid-side voltage orientation, the nonlinear speed control system for the generator (and turbine), and the non-minimum phase DC-link voltage control system are discussed in detail; based on a brief derivation of the underlying machine-side and grid-side current control systems. With the help of the power balance of the wind turbine, the operation management and the control of the power flow are explained. Concluding simulation results illustrate the overall system behavior of a controlled wind turbine with a permanent-magnet synchronous generator.