Simulation Model-based Transient Behaviour of a Doubly Fed Induction Generator in a Wind Energy Conversion System

Jitendra Yadav; Kalpana Meena

doi:10.37591/.v13i3.1550

Abstract

A Doubly-Fed Induction Generator (DFIG)'s transient behaviour is how it reacts to abrupt alterations or disruptions in the power system. DFIGs are widely used in turbines for wind power along with other renewable energy technologies. Recognising the transient behaviour is necessary to guarantee the power system's sustainability and dependability. This study presents the Simulink model-based demonstration of the transient behaviours of a doubly fed induction generator. Additionally included is a mathematical model based on the d-q Transformation, which includes instantaneous power electromagnetic torque, rotor currents, stator phase currents, and stator flux connections. This investigation looks at a 9 MW wind turbine that uses a 30 km, 25 kV feeder for supplying electricity to a 120 kV grid. Six 1.5 MW wind turbines coupled to a 25 kV transmission network comprise the wind farm. According to the suggested Simulink model, when a three-phase symmetrical fault occurs at the grid between t = 0.04 and t = 0.06 seconds, the network experiences a quick drop in voltage, which results in an almost abrupt injection of both active and reactive power. During the malfunction, this behaviour is also dependent on the rotor side converter.