Intelligent Controllers for an Isolated Wind Energy Conversion Scheme

This paper focuses on the controller designs for an isolated wind electric generator supplying power to heating and voltage sensitive loads. The wind driven self-excited induction generator (SEIG) and other network components are modeled and simulated using Matlab/Simulink. The variable voltage and frequency of the generator is first rectified and the DC power is then transferred to the load through a DC link converter. By adjusting the modulation index of the PWM inverter, either maximum power can be obtained from the system or the terminal voltage can be maintained constant under varying wind velocities and load conditions. The design of neuro controllers is presented: 1) to maximize the power extraction for heating type of loads and 2) to regulate the terminal voltage for voltage sensitive loads.