Untitled

Abstract

This paper presents the performance analysis of an autonomous DFIG based wind energy generation system under the different possible conditions. A variable speed-constant frequency wind energy generation system, supplying an isolated load, is designed via wound rotor induction machine and back-to-back coupled power electronics converters, connected in between stator and rotor of machine. Indirect stator flux-oriented control technique is used towards rotor side converter for regulating the voltage and frequency at the stator terminal. In order to provide the load harmonic compensation, shunt active power filtering function is embedded in the control of the stator/load side converter control. Hysteresis controllers are used for providing control pulses for both the converters. These control pulses achieved through generated error signals, by comparing the actual and reference rotor current. The simulation of 2 MVA wind energy generation systems is done through wound rotor induction machine prototype in MATLAB/Simulink. The simulation results obtained from the 2 MVA systems are observed and analysed in this paper.