In this paper, the model of the grid side system GSS is studied in two consequentsteps.First, the steady state model of the GSSis developed by using phasor theory;studyingthe relationships between active and reactive powers, voltage, and currents at different operating modes.Second, control of the grid side converterGSCis studied;developing the grid side dynamic model based on space vector theory. In this paper vector control technique thatemploys a rotatory reference frame (dq) aligned with the grid voltage space vectoris adopted. This control strategymadeit possible to achieve the two main objectives of the GSCwhich are: control of the DC bus voltage and assuretransmission of power through the converter, with controlled reactive power exchange. Interval Type-2 Fuzzy Logic Controllers (IT2FLCs) are proposed to control the bus voltage of the DC link. The IT2FLCs proposed in this paper were designed to deal with uncertainty that may occur according to changes during system operation.In this paper, design of GSCcontroller,which is responsible forthe terminal voltage control in addition to the DClink voltage regulation, is done. The developed IT2FLC controller is simulated using MATLAB/SIMULINKsoftware for a 1.5 MW typical wind turbine to verify the performance of the controller
Type-2 Fuzzy Logic Application of a Grid Side Converter Control for DFIG Driven Wind Turbines. Available from: https://www.researchgate.net/publication/288515794_Type-2_Fuzzy_Logic_Application_of_a_Grid_Side_Converter_Control_for_DFIG_Driven_Wind_Turbines [accessed Mar 15, 2017]. |
