Wind energy generation system using wound rotor induction machine

Abstract

This paper analyse the utilization of field orientated control method for controlling the voltage and frequency of a variable speed-constant frequency wound rotor induction machine operate in autonomous mode. For autonomous mode of operation, an isolated load is connected with wound rotor induction generation system consist of back-to-back coupled power electronics converters connected between stator and rotor of generator. In low windy areas such type of wind energy systems are more suitable. For operation in stator flux oriented synchronously rotating reference frame, speed-sensing control method used to control rotor side converter. Hysteresis controllers are used for providing control pulses for rotor side converter. These control pulses achieved from the 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.