交流传动牵引负荷冲击特性研究

Research on the Shock Characteristics of AC Drive Traction Loads

分析了牵引供电系统的组成结构,对HXD3交流传动电力机车的牵引传动系统进行了研究,建立了V/v接线牵引变压器的带回流线的直接供电方式这种典型牵引供电系统的Simulink仿真模型。在此基础上,分析交流传动牵引负荷的特点,并且指出了牵引负荷对电网造成功率冲击的主要原因。最后基于总体测辨法的建模思路,运用最小二乘支持向量机的回归原理,建立交流传动牵引负荷的非机理模型。仿真建模结果表明,该模型能够反映交流传动牵引负荷的冲击特性和负荷特性。

The composition of traction power supply system is analyzed,also,the HXD3 traction drive system is studied,and then the simulation model of typical traction power supply system is set up based on Simulink,namely direct feeding system with return wire mode with V/v transformer.On the basis of which,this paper analyzes the characteristics of electrified railway traction loads,and points out the main cause of the shock of the traction loads on the power system.According to the measurement-based modeling,the least square support vector machine is applied to the establishment of the non-mechanism model of traction loads.The simulation test results show that the model can reflect the shock load characteristics of AC driving traction loads.