牵引电机用有机硅少胶云母带的应用研究

Application Study on Silicone Dry Mica Tape for Traction Motor

为了探究有机硅少胶云母带的性能对牵引电机绝缘系统可靠性的影响,针对两种进口云母带和两种国产云母带开展了材料基础性能试验、模拟线棒验证以及绝缘系统可靠性评定。结果表明:胶含量较少、透气性较高的云母带与有机硅浸渍漆的相容匹配性更优,形成的绝缘系统热态介质损耗因数较小、固化率较高,提高了绝缘系统的击穿电压,提升了绝缘系统的可靠性。

In order to explore the impact of the performance of silicone dry mica tape on the reliability of insulation system of traction motor,we conducted the material basic performance,laboratory simulation of wire rod,and insulation system reliability evaluation on two imported mica tapes and two domestic mica tapes.The results show that the mica tape with less resin and higher air permeability shows a better compatibility with the silicone impregnating varnish.The formed insulation system has a lower thermal dielectric loss factor and a higher curing rate,which improves the breakdown voltage and improves the reliability of the insulation system.