Modeling and Power Controls of Wind Energy Conversion Systems Based on Doubly Fed Induction Generator

摘要

This study focuses on the wind energy conversion systems which consist of a turbine, multiplier, generator and power electronic devices. In our case we opted for the doubly fed induction generator (DFIG); this choice is due to its advantages as well as its ability to adapt to changing wind. On the other hand, this machine is characterized with its non-linearity. Moreover, it is necessary to apply a control in order to have a maximum of power and to maintain the reactive power at zero. Therefore, we will start with the modeling of the system. Then, the maximization of the power using the strategy of maximum power point tracking (MPPT) will be detailed, finally, we will apply the two control techniques namely: direct field oriented control (DFOC) and indirect field oriented control (IFOC) in order to compare them. The results are presented in the Matlab/ Simulink environment to ensure the performance of the control.