结合1000kW交-直-交系统的地而试验及4 000kW原型机车的要求,对YQD-300异步牵引电动机进行了小时温升等五项试验。本文通过对试验结果的分析,表明所设计的异步牵引电动机具有起动电流小、起动转矩大、堵转时间长、温升低、恒功特性理想等优良性能。试验结果为新电机的设计提供了依据。 Based on the field test of 1000kW AC-DC-AC system and the requirement of 4 000kW prototype locomotive, five tests such as hourly temperature rise of YQD-300 asynchronous traction motor were carried out. In this paper, the analysis of test results shows that the asynchronous traction motor designed has the advantages of small starting current, large starting torque, long blocking time, low temperature rise and ideal constant power characteristics. The test results provide the basis for the new motor design.