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正在开展下一代重载牵引用电传动内燃机车传动系统的研究。这种传动系统的特征是具有三相牵引电动机和采用最新的功率半导体器件的功率逆变器。功率半导体器件的技术发展[1]和这些器件冷却方式的改进[2]促进了三相感应电动机在牵引传动装置中的应用。美国GM公司的EMD与德国西门子公司正在联合开发采用这种传动装置的大牵引力机车的样机。为了确定用于在六轴货运机车上实行独立的转向架控制的新型三相牵引传动部件的要求和设计，对机车的传动系统进行了研究。通过采用牵引传动部件的计算机模型，对影响到机车高牵引力和传动部件额定值的各种考虑因素进行了研究。研究内容包括因轮／轨摩擦-蠕滑条件而引起的牵引电动机负荷分配，转向架重量转移，牵引电动机转矩-转达特性和轮径差。
The next generation of heavy-haul traction electric diesel locomotive drive system is being studied. This drive train features a three-phase traction motor and a power inverter using the latest power semiconductor devices. The technological development of power semiconductors [1] and the improvements in the cooling of these devices [2] have promoted the application of three-phase induction motors in traction drives. EMDs from GM USA and Germany’s Siemens AG are jointly developing a prototype of a large-traction locomotive using this transmission. In order to determine the requirements and design of a new three-phase traction drive for independent bogie control on six-axle freight locomotives, locomotive driveline systems were studied. By adopting the computer model of the traction drive components, various considerations that affect the high tractive force of the locomotive and the rating of the transmission components are studied. The study covered traction motor load distribution, bogie weight transfer, traction motor torque-transfer characteristics, and wheel diameter differences due to wheel / rail friction-creep conditions.