Abstract: The first of this series papers has studied the wideband oscillation phenomenon in permanent magnet synchronous generators（PMSG） wind farms connected to AC weak grid, and analyzed the mechanism. The impedance reshaping method based on the control parameters optimization and strategy improvement design has become a useful method of oscillation suppression. The previous literature usually designs the impedance reshaping for the specific oscillation frequency band after the occurrence of the oscillation accident, the wideband reshaping design method suitable for complex grid environment is lacked. An impedance reshaping control strategy involving active damping and virtual admittance was proposed for the oscillation problems in frequency band Ⅲ and Ⅳ. The analytical impedance model considering the impedance reshaping control was established and verified. Considering the band overlap effect between different frequency bands analyzed in first paper of the series, the unified iterative optimization design of the control parameters of each controller was carried out, and the impedance reshaped of the frequency band Ⅱ, Ⅳ and Ⅲ were realized successively, improving the system stability margin of PMSG connected to AC weak grid. Finally, based on the control hardware-in-the-loop（CHIL） simulation platform, the impedance reshaping and wideband oscillation mitigation for a practical PMSG were carried out, and the effectiveness of the proposed strategy was verified.