一种变流器输出电压的新型测量方法  

A New Measurement Method of Converter Output Voltage

作　　者：高培峰 李颖奇 王冬刚 唐蕾 GAO Pei-feng;LI Ying-qi;WANG Dong-gang;TANG Lei(Beijing Zongheng Electro-mechanical Technology Co.,Ltd.,Beijing 100094,China;Locomotive&Car Research Institute,China Academy ofRailway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]北京纵横机电科技有限公司,北京100094 [2]中国铁道科学研究院集团有限公司,机车车辆研究所,北京100081

出　　处：《电力电子技术》2025年第3期107-111,共5页Power Electronics

基　　金：中国国家铁路集团有限公司科研研究开发计划(J2022J005);中国铁道科学研究院集团有限公司院基金(2021YJ316)。

摘　　要：牵引变流器在进行组合试验时,电路中电压变化情况复杂,能够准确、快速地测量输出电压,对于掌握变流器实际运行状态有重要意义。根据需求提出一种新型的电压测量方法,以电机转速作为参考量切换不同的低通滤波器,达到实时、准确测量变流器输出电压的目的。此外,通过对滤波器数值的计算分析,探讨了该设计方法的合理性,以及滤波器不同参数变化对测量结果的影响;进一步通过试验,与牵引系统试验台数据对比,验证了测量方法的准确性和可行性。When the traction converter is undergoing combined testing,the circuit undergoes complicated voltage cha-nges.Accurate and rapid measurement of output voltage is of significant importance for understanding the actual oper-ating mode of the converter.A novel voltage measurement method is proposed based on the requirement,taking the ro-tational speed as a reference to switch between different low-pass filters,to achieve the real-time and accurate mea-surement of the output voltage of the converter.Moreover,the rationality of this design method is discussed through numerical analysis of the filter,along with an examination of the impact of various filter parameters on measurement results.Furthermore,through testing and comparison with data from the traction system test bench,the accuracy and feasibility of the measurement method are validated.

关 键 词：变流器 输出电压 低通滤波器 

分 类 号：TM46[电气工程—电器]