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一、前言铁道车辆用的电机与一般工业用电机相比,在振动、尘埃、潮气、负荷变化等使用条件方面更为严峻。此外,由于重量和空间受限制,因此通常要求小型和轻量化。电力机车的主要电器设备有主变压器、主整流器、牵引电动机、控制装置和辅助电机等。在提高速度和牵引力的同时,输出功率也有所提高。因此,占车辆重量约30％的电器设备的轻型化就更有必要。为满足此要求,除了从电气设计上改进之外,对绝缘材料性能的提高也寄予了极大的希望。
I. Introduction Motors for rail vehicles are more severe than those for general industrial motors in terms of vibration, dust, moisture, load changes and other conditions of use. In addition, since the weight and the space are limited, the size and weight are generally required. The main electrical equipment electric locomotive main transformer, the main rectifier, traction motors, control devices and auxiliary motors. While increasing speed and traction, the output power also increased. Therefore, the light weight of electrical equipment, which accounts for about 30% of the weight of the vehicle, is even more necessary. In order to meet this requirement, in addition to improving the electrical design, there is also great hope for improving the performance of insulating materials.