ZHU Xianliang, DAI Tao, YANG Haibo, et al. Design of Additional Damping Eckermann Controller for the HVDC Transmission System[J]. 2021, 40(6): 20-26.DOI:
To improve the HVDC transmission level and suppress the low frequency and synchronous oscillation
this paper proposes a multi-channel additional frequency eckermann control strategy.To reduce the mutual coupling between the control signal
by adding butterworth band-pass filter in each channel
the orientation signal of each modal runs in each channel separately.Using improved TLS-ESPRIT recognition algorithm
identifies the transfer functions of the system under different oscillation modes.Using the additional frequency eckermann control method
designs the controller for different oscillatory modes.The PSCAD/EMTDC simulation shows that the additional frequency eckermann controller can suppress different oscillation modes well and has good robustness.