宁波地铁4号线车辆永磁同步牵引系统能耗性能研究

Study on energy consumption performance of permanent magnet synchronous traction system for trains on Ningbo metro line 4

文章采用试验为主、仿真为辅的方法,分析地铁车辆不同工况下的能耗数据,对永磁同步牵引系统与感应异步牵引系统的牵引吸收、再生反馈、惰行能耗、再生率等能耗性能进行了解耦分析,通过解耦的方法,尽可能令边界固定和变量单一,以保证计算精度。根据不同边界条件,对宁波地铁4号线永磁同步牵引系统与感应异步牵引系统的能耗表现进行数据统计。根据相同目标速度、惰行工况、巡航工况下的能耗具体表现,对其规律进行归纳,分析永磁同步牵引系统在能耗方面的优势。通过惰行实测试验数据,对永磁同步牵引系统和感应异步牵引系统数据进行修正与拟合,结合辅助系统的能耗数据分析,经数据统计和规律归纳,验证理论分析的正确性,并将定性推断转化为定量描述。在理论结合数据的基础上,提出了永磁牵引系统冷却风扇运行优化、牵引特性曲线优化、惰行励磁弱磁优化等牵引系统能耗优化的观点。

This paper was intended to analyze the energy consumption data of metro trains under different working conditions primarily relying on experiments and applying simulation as the supplement.The energy consumption performance of the permanent magnet synchronous traction system and induction asynchronous traction system were first analyzed by the decoupling method,including traction absorption,regeneration feedback,coasting energy consumption,regeneration rate,to ensure the calculation accuracy thanks to the fixed boundaries and simple variables as much as possible.Based on the data statistics on the energy consumption performance of the permanent magnet synchronous traction system and induction asynchronous traction system on the trains running on Ningbo metro line 4 under different boundary conditions,laws were summarized from the specific energy consumption performance under the same target speed,coasting condition and cruising condition,to reveal the advantages of the permanent magnet synchronous traction system in energy consumption.The data of the permanent magnet synchronous traction system and induction asynchronous traction system were corrected and fitted by the measured coasting data in the experiments.Combined with the energy consumption data analysis of the auxiliary system,the correctness of the theoretical analysis was verified through data statistics and induction on laws,and the qualitative inferences were transformed into quantitative descriptions.Integrating the theoretical analysis with data,the points of view are raised for energy consumption optimization of the permanent magnet traction system,including the cooling fan operation,traction characteristics curve,field weakening for coasting.