Control of a Wind Driven Doubly Fed Induction Generator During Grid Faults 12+

📖 Master's Thesis from the year 2013 in the subject Engineering - Power Engineering, grade: none, , course: Electrical engineering (Renewable energy), language: English, abstract: Wind electrical power systems are recently getting lot of attention, becausethey are cost competitive, environmental clean and safe renewable powersource, as compared with fossil fuel and nuclear power generation. A specialtype of induction generator, called a doubly fed induction generator (DFIG),is used extensively for high-power wind applications. They are used moreand more in wind turbine applications due to ease controllability, highenergy efficiency and improved power quality.This thesis aims to develop a method of a field orientation scheme forcontrol both the active and reactive powers of a DFIG driven by a windturbine.The proposed control system consists of a wind turbine that drives aDFIG connected to the utility grid through AC-DC-AC link. The maincontrol objective is to regulate the dc link voltage for operation at maximumavailable wind power.This is achieved by controlling the and axescomponents of voltages and currents for both rotor side and line sideconverters using PI controllers. The complete dynamic model of theproposed system is described in detail. Computer simulations have beencarried out in order to validate the effectiveness of the proposed systemduring the variation of wind speed. The results prove that , better overallperformances are achieved, quick recover from wind spe...