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现行城轨牵引供电系统多用多脉波整流的方式,但是存在谐波污染严重、能量不能双向流动的缺点,针对上述问题,文章提出了基于无源控制策略的整流器控制方式,对该种控制方式首先进行了理论推导,根据电压型整流器的主电路拓扑结构,建立了系统在两相同步旋转坐标系下的EL模型,并采用了解耦控制策略对控制器进行设计,最后将该方法用于城轨牵引供电系统中,控制整流器输出接触网(轨)的电压,并且在此基础上分析了负载扰动,机车制动,电网不平衡条件下整流器的性能,仿真结果表明,整流器具有很好的稳定性、抗干扰性,单位功率因数运行特性,对城轨牵引供电系统提供了很好的理论依据。
Current multi-purpose urban rail traction power supply system using multi-pulse rectifier, but there are serious shortcomings of harmonic pollution, the energy can not flow in both directions. In view of the above problems, the paper presents a passive control strategy based on the rectifier control method of this kind of control Based on the topology of the main circuit of the voltage rectifier, the EL model of the system under the two-phase synchronous rotating coordinate system is established and the decoupling control strategy is adopted to design the controller. Finally, the method is applied to In the urban rail traction power supply system, the rectifier output voltage of the contact network (rail) is controlled, and the performance of the rectifier under load disturbance, locomotive braking and grid unbalance is analyzed. The simulation results show that the rectifier has a good Stability, anti-interference, unit power factor operating characteristics of the city rail traction power supply system provides a good theoretical basis.