基于台架控制的定子温度对系统效率的影响

Effect of Stator Temperature on System Efficiency Based on Bench Control

电动汽车的续航里程直接受到电驱动系统效率的影响。基于对一款200 kW电驱动系统进行效率Map测试,研究了基于两电机台架控制的定子温度对电驱动系统效率的影响。首先,通过测量定子温度,分析了其对效率的影响。其次,使用微欧计测量线损,以解决直流母线电流损耗的影响。进一步地,采用功率分析仪自动量程提供更精准的电压和电流测量。最后,通过数据滤波和自定义数据采集方式来提高数据准确度及稳定性。这些改进方案为提高电驱动系统效率的测试准确度提供了基础保障。通过研究成果,可为新能源汽车的续航里程提升和性能优化提供实用的指导。

The driving range of electric vehicles is directly influenced by the efficiency of the electric drive system.This study focused on the impact of stator temperature on the efficiency of a 200 kW electric drive system based on efficiency mapping tests conducted on a dual motor test bench.Firstly,measured the stator temperature and analyzed its influence on efficiency.Secondly,employed micro-ohmmeters to measure line losses,addressing the impact of direct bus current losses.Furthermore,utilized a power analyzer to automatically provide more accurate voltage and current measurements.Finally,data filtering and customized data acquisition methods were implemented to enhance data accuracy and stability.These improvements lay the foundation for improved testing accuracy in enhancing the efficiency of electric drive systems.The outcomes of this research offer practical guidance for enhancing the driving range and performance optimization of new energy vehicles.