Passivity-consensus-based Control Method for Flexible AC Traction Power Supply Systems of Rail Transit
Addressing the multivariable,strong coupling and nonlinear characteristics of the flexible AC traction power supply system in rail transit centered on a bidirectional converter,a bilinear system model is established in dq coordinates to facilitate the synchronous linear transformation of state and control variables.The consistency error of adjacent bidirectional converters is incorporated into the passive controller's output,which enables the synchronous fast tracking of the expected trajectory of the converter's DC-side voltage and dq-axis current,achieves the cooperative control targets of multiple converters.MATLAB-based simulations verify that the proposed method ensures accurate power distribution among multiple converters even under the conditions of varying train load power demand and controller parameter perturbations.Compared to traditional droop PI control,the proposed method exhibits the characteristics of fast dynamic response,good synchronization and high stability.
urban rail transitflexible AC traction power supply systembidirectional converterpassivity-consensus-based controlglobal asymptotic stability
NETL
NSTL
万方数据
