Inverter open-circuit fault online diagnosis method
The invention discloses an inverter open-circuit fault on-line diagnosis method, which comprises the following steps of S1, acquiring three-phase output current signals ia, ib and ic of an inverter in real time, and performing Fourier transform analysis to obtain fault characteristic parameters repr...
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| creator | TIAN HAOKUAN TIAN GUANGQIANG WANG FUZHONG QIAO SHANSHAN WANG SHAOYING DU FANGFANG |
| description | The invention discloses an inverter open-circuit fault on-line diagnosis method, which comprises the following steps of S1, acquiring three-phase output current signals ia, ib and ic of an inverter in real time, and performing Fourier transform analysis to obtain fault characteristic parameters represented when different open-circuit faults occur in the inverter; s2, preprocessing the fault feature parameters by using the feature parameters; s3, carrying out the antecedent network operation of the T-S fuzzy neural network, and obtaining the output of the antecedent network; and S4, carrying out the consequent network operation of the T-S fuzzy neural network, and obtaining a fault diagnosis result. According to the method, the problems of multi-causal coupling, fuzziness, uncertainty and the like between the open-circuit fault characteristics and the fault types of the inverter are solved, and the accuracy of online diagnosis of the open-circuit fault of the three-phase two-level inverter is improved; on-line |
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According to the method, the problems of multi-causal coupling, fuzziness, uncertainty and the like between the open-circuit fault characteristics and the fault types of the inverter are solved, and the accuracy of online diagnosis of the open-circuit fault of the three-phase two-level inverter is improved; on-line</description><language>chi ; eng</language><subject>APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS ; CALCULATING ; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS ; COMPUTING ; CONTROL OR REGULATION THEREOF ; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; ELECTRICITY ; GENERATION ; MEASURING ; MEASURING ELECTRIC VARIABLES ; MEASURING MAGNETIC VARIABLES ; PHYSICS ; TESTING</subject><creationdate>2023</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230404&DB=EPODOC&CC=CN&NR=115902688A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230404&DB=EPODOC&CC=CN&NR=115902688A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TIAN HAOKUAN</creatorcontrib><creatorcontrib>TIAN GUANGQIANG</creatorcontrib><creatorcontrib>WANG FUZHONG</creatorcontrib><creatorcontrib>QIAO SHANSHAN</creatorcontrib><creatorcontrib>WANG SHAOYING</creatorcontrib><creatorcontrib>DU FANGFANG</creatorcontrib><title>Inverter open-circuit fault online diagnosis method</title><description>The invention discloses an inverter open-circuit fault on-line diagnosis method, which comprises the following steps of S1, acquiring three-phase output current signals ia, ib and ic of an inverter in real time, and performing Fourier transform analysis to obtain fault characteristic parameters represented when different open-circuit faults occur in the inverter; s2, preprocessing the fault feature parameters by using the feature parameters; s3, carrying out the antecedent network operation of the T-S fuzzy neural network, and obtaining the output of the antecedent network; and S4, carrying out the consequent network operation of the T-S fuzzy neural network, and obtaining a fault diagnosis result. 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| subjects | APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CALCULATING COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS COMPUTING CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING |
| title | Inverter open-circuit fault online diagnosis method |
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