Abstract：Traction converter-motor system is the main component of metro vehicle. Voltage and current oscillation on the DC-link of traction converter is easily stirred by metro catenary voltage fluctuation,by limited configuration of LC filter parameters,and by negative impedance characteristic due to certain traction control scheme. Such DC-link oscillation results in consistent unsettled motor torque output,affecting system stability finally. This paper first comes up with the ?-equivalent circuit and approximated linear model based on rotor-field-orientation traction control scheme,and then the equation dealing with input admittance of traction converter is induced,by which the oscillation mechanism of LC-converter-motor system is analyzed thoroughly. Finally,this paper proposes a novel stabilization controller with the on-line correction of the torque component of stator current,for the adjustment of input converter admittance. The controller is then subjected to simulated and experimental results,for the testimony of its effectiveness.
赵雷廷，刁利军，董侃，刘志刚. 地铁牵引变流器-电机系统稳定性控制[J]. 电工技术学报, 2013, 28(7): 101-107.
Zhao Leiting,Diao Lijun,Dong Kan,Liu Zhigang. Stabilization Control for Metro Traction Converter - Motor System. Transactions of China Electrotechnical Society, 2013, 28(7): 101-107.
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