(一)全磁场下电流分配问题负载电流分配不均是电力传动内燃机车的一个重要问题。若不均程度过大,会造成电机过载并长期超载运用,电枢过热、换向不良、整流子发黑等故障接踵而至,致使机车的可靠性降低。为保证东风型机车牵引电动机负载电流的均匀分配,通常采用两种方法。 (A) Current Distribution Problems Under Full Magnetic Field Uneven load current distribution is an important issue for electric drive diesel locomotives. If the uneven degree is too large, it will cause motor overload and long-term overload, armature overheating, poor commutation, commutator black and other failures followed, resulting in reduced locomotive reliability. In order to ensure the uniform distribution of the load current of the traction motor of the Dongfeng locomotive, two methods are usually adopted.