Modeling and control of stand-alone wind energy conversion system with PMBLDC generator

This paper deals with the design and modeling of a small scale stand-alone wind energy conversion system (WECS) using a maximum power point tracking (MPPT) controller and permanent magnet brushless dc (PMBLDC) generator. The WECS consists of a wind turbine, PMBLDC generator, MPPT controller, isolated half bridge dc-dc converter, battery, voltage source inverter (VSI) and output filter. The fuzzy logic based MPPT controller is designed for a stand-alone WECS for regulating the duty cycle of the dc-dc converter to extract maximum power. The power quality at the consumer load end is maintained using an output voltage controller, which regulates the output voltage and current of VSI. The designed system is modeled and its behavior is simulated in Matlab/Simulink using simpower system and fuzzy logic toolboxes.