A Study of Fault Diagnosis of Power Converter Based on Stream Current
LIU Yongzhi
ZHOU Zheng
SONG Jinlong
MA Weiming
WANG Zhenliang
Abstract：Aimed at the four typical electrical troubles of power converter in the switched reluctance start-ing/generation system,and on the basis of analyzing upper and lower following current,and introduction of digitizer ,a new method of fault diagnosis is proposed.Converter's operational principle and the energy con-vent process are analyzed.The effects of faults on the upper and lower following current are analyzed in ex-citing state and current?following state,then,according to the fault?feature,the scheme of fault diagnosis is put forward based on the difference between upper and lower following current.Finally,a fault diagnose model of switched reluctance starter/generator is built and validated.The result shows that the fault diag-nosis scheme is more accurate than that of the fault diagnosis with only phase?current.
Keywords：switched reluctance starting/generation (SRS/G)power converterfault diagnosisthe analy-sis of stream currentfault?feature vector
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 28-32 )