Paper title: VOLTAGE DIPS EFFECTS DETECTION AND COMPENSATION FOR DOUBLY-FED INDUCTION GENERATOR BASED WIND ENERGY CONVERSION SYSTEM
Author(s): SAMIR ABDELMALEK, SARAH REZAZI, AZZEDDINE BAKDI, MAAMAR BETTAYEB,
Abstract: Doubly-fed induction generators (DFIGs) are the most widely used types in wind turbine (WT) systems due to their mechanical
reliability and control flexibility. Electrical faults however remain a major concern in DFIGS in which accurate fault detection
(FD) and fault-tolerant control (FTC) of their electrical parts play a crucial role to increase their reliability and availability and
those of the entire wind farms. More particularly, voltage dips (VDs) effects on both the stator and the rotor of a DFIG make it
vulnerable to frequent failures which are undesired in practice. This article therefore introduces a model-based design for
efficient and robust fault detection, identification, and estimation in addition to a compensation control scheme for VDs in
DFIGs. An adaptive proportional integral observer (APIO) is designed for detection and compensation of VDs with a robust
FTC that allows fault-ride-through capability and maintains the stability and smooth operation in DFIG-based wind power
generation. The proposed observer and the fault tolerant controller of the nonlinear DFIG are designed through Lyapunov
theory to ensure sufficient stability conditions described by a system of linear matrix inequalities (LMIs). These designs are then
analysed across various tests for their VDs detection, estimation, and compensation capabilities.
Keywords: Fault tolerant control, Voltage dips, Fault detection, Doubly-fed induction generator (DFIG), Lyapunov theory,
Linear matrix inequalities (LMIs) conditions Year: 2019 | Tome: 64 | Issue: 3 | Pp.: 199-204
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