Principle of the Stator Flux Phase Deviation Compensation of the Doubly-fed Induction Generator

In order to overcome the deviation of the actual stator angle and the given(calculated) stator angle arising from the grid voltage dropping or the parameter changes of the stator side,so that the anti-jamming capability of the control system will be improved,the stator flux angle deviations was derived from the DFIG mathematical model.Based on the stator flux phase deviation compensation principle,a new stator flux-oriented vector control was proposed.While the d-axis component(set to zero) of stator flux is effectively addressed to assure the condition of vector control,so that the control system has a certain low-voltage ride through ability and strong robustness.Finally,the correctness of the theory is verified by simulation and experimental results and the proposed control program is also effective.