论文部分内容阅读
本文提出了计算相控交流电力机车牵引电机在再生制动时故障电流的数学模型和计算机程序。在计算时考虑了牵引电机和平波电抗器的非线性、电机磁路实心部分的涡流以及电枢反应(横轴电枢反应和换向电枢反应)对故障电流的影响。本文还介绍了各种情况下的牵引电机短路试验,以验证所提出的计算方法。计算结果和试验数据相当接近。同时,通过试验与计算,还提出了降低电机短路电流的有效措施。
This paper presents a mathematical model and computer program for calculating the fault current of regenerative braking of traction motor for phase-controlled AC electric locomotive. The nonlinearity of the traction motor and the smoothing reactor, the eddy currents in the solid part of the motor magnetic circuit, and the influence of the armature reaction (horizontal axis armature reaction and the commutator armature reaction) on the fault current are considered in the calculation. The paper also introduced the traction motor short circuit test in various situations to verify the proposed calculation method. The calculated results are quite close to the experimental data. At the same time, through experiments and calculations, but also put forward to reduce the motor short-circuit current effective measures.