基于电压波形分析的三相不控整流装置故障诊断  

A Fault Diagnosis Method of 12-phase Uncontrolled Rectifier Based on Waveform Similarity Measurement of Diodes

作　　者：朱威[1] 阳习党[1] 肖欢[1] 余锡文[1] Zhu Wei;Yang Xidang;Xiao Huan;Yu Xiwen(National Key Laboratory for Vessel Integrated Power Technology,Naval Univ. of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,武汉430033

出　　处：《船电技术》2017年第10期10-16,共7页Marine Electric & Electronic Engineering

基　　金：国家自然科学基金项目(编号:51407189)

摘　　要：提出了一种基于整流二极管电压波形分析的三相不可控整流装置故障诊断算法。对三相不可控整流装置在正常和故障情况下整流二极管两端的电压波形进行了解析分析,得到两种情况下整流二极管两端波形的解析表达式。通过仿真验证了理论推导的正确性并指出整流二极管在故障前后的电压波形变化规律。提出利用电压波形的正向特征值作为故障诊断特征函数,最后由试验验证了该故障诊断方法的有效性。该方法可推广应用于其他六相以上不可控整流装置。A fault diagnostic method of3-phase uncontrolled diode rectifiers based on the voltage waveform analysis is proposed.The voltage waveform analytic expressions of each diode in the rectifier are derived in detail under normal and fault conditions.The analytic results are compared and verified with the simulation results,which reveal the regularity of the diode’s voltage waveform.According to the characteristic values calculated by the fault characteristic function,the fault diode can be located on line.The experimental results are in agreement with theoretical analysis,and show the effectiveness of the method.The fault diagnosis method can be generalized in six or more phase uncontrolled rectifiers.

关 键 词：三相不控整流 故障诊断 电压波形分析 

分 类 号：TM46[电气工程—电器]