Parallel compensation has been widely used to compensate reactive power and improve power quality of grid voltage. When doubly fed induction generator(DFIG)based wind turbine is connected to parallel compensation grid

due to the unmatched impedance of DFIG system with parallel compensation grid

the interconnected system suffers high frequency resonance

which will further degrade the operation performance of DFIG system. An impedance reshaping strategy for DFIG system to mitigate high frequency resonance is proposed

which introduces a controller based on Chybeshev filter at grid-side converter to reshape high frequency impedance of DFIG system and can avoid the resonance frequency detection in existing methods. The proposed control strategy can solve the problem of control performance degradation that happens when compensation degree changes

thus the adaptability of DFIG system to compensation grid can be improved. In addition

the influences on fundamental frequency control caused by the proposed resonance damping strategy are analyzed. And the simulation of the high frequency harmonic suppression strategy for DFIG system is validated.