【摘要】 利用MATLAB平台上的仿真软件SIMULINK建立了SS3B型电力机车的数字仿真模型。在仿真模型中比较准确地模拟了直流电机的反电势,利用机车牵引特性函数与整流回路的关系对导通角α进行了计算,得到电力机车交流侧电流;利用MATLAB提供的FFT函数对电流进行快速傅立叶变换,得到电力机车注入牵引网的基波和各次谐波电流。通过仿真结果分析,可以看出此仿真模型具有正确性、有效性和可行性。更多还原

【Abstract】 A digital simulation model of SS_3B electric locomotive is built with the simulation software SIMULINK based on MATLAB.Counter-electromotive force of DC motor is simulated accurately with the model. Conduction angle α is calculated by use of therelationship between the function of locomotive tractive characteristic and rectifier circuit. AC side current of the electric locomotive isderived. Through of current with FFT function from MATLAB, fundamental and harmonic current injected in to the catenary by the electriclocomotive is deducted. Simulation results indicate that the model features accuracy, efficiency and feasibility.更多还原