三峡大学学报（自然科学版）2026，Vol.48Issue(4)：92-99,8.DOI:10.13393/j.cnki.issn.1672-948X.2026.04.012
基于新型等效模型的逆变器故障诊断方法
Diagnosis Method of Inverter Fault Based on a New Equivalent Model
摘要
Abstract
An method of inverter fault diagnosis based on a novel equivalent model is proposed in this paper.Firstly,a new switch equivalent model is presented by analyzing the deficiencies in previous switch modeling,upon which a novel bond graph model of the inverter is established for fault diagnosis.To address the issue of false alarms caused by the uncertainty of discrete state variables,a feedback correction mechanism is introduced,which automatically corrects residual values based on discrete state changes,with its parameter settings optimized through an optimization problem.Furthermore,a fault diagnosis method based on a non-fused fault signature matrix is established,and the diagnosis of IGBT parameter faults is enhanced.The simulations demonstrate that the proposed correction mechanism effectively resolves false alarms due to discrete state variable uncertainty,and both the novel equivalent model and the new diagnosis method improve the performance of fault isolation.关键词
键合图/故障诊断/IGBT参数故障/故障特征矩阵/解析冗余关系Key words
bond graph/fault diagnosis/IGBT parameter fault/fault signature matrix/analytical redundancy relationship分类
信息技术与安全科学引用本文复制引用
李佳伟,帕孜来·马合木提..基于新型等效模型的逆变器故障诊断方法[J].三峡大学学报（自然科学版）,2026,48(4):92-99,8.基金项目
国家自然科学基金项目(61963034) （61963034）
