Since the stator windings of doubly-fed induction generator(DFIG)are usually coupled with power grid directly, transient fluxes will occur in the stator windings upon grid faults,and as a result,it will cause transients in the rotor currents and voltages.The flexibility of DFIG control system has not been utilized very well in the conventional crowbar circuit based low-voltage ride through(LVRT)strategies and it is difficult to meet the increasingly stringent grid code requirements.Some transient flux compensation based LVRT strategies have been used for DFIG wind turbines,however,the dependence on stator flux linkages makes this type of algorithms complicated and sensitive to the DFIG parameters.Based on the analysis of the transient process of DFIG following grid faults,a novel LVRT control strategy based on virtual inductance self-demagnetization algorithm is proposed.With the proposed strategy,not only the transient voltage surge in the rotor is suppressed very well, enlarging the wind turbines to ride through most of grid faults,but also the transient flux observation is not required anymore, reducing the computation load and the dependence on the DFIG parameters,and improving the response speed and robustness of the control system.The correctness and effectiveness of the analysis and design are validated with the simulation and experiment results on 11 kW simulative wind turbines.