Abstract:Starting from the energy equivalence relation,and by appliation of non-linear control theory a new doubly fed induction generation control method is proposed.The doubly fed induction generator(DFIG) tracks reference flux and speed trajectories with time-varying load torque.To achieve this,an adaptive PBC method based on Euler-Lagrange(EL) system is developed.The key point with this method is the identification of terms,known as workless forces,which appear in the dynamic equations of DFIG but do not have any effect on the energy balance equation of the closed loop.This leads to a simple control structure and enhances the robustness of the control system.The reasonability and validity is testified by the experimental results based on dSPACE.