http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113156337-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R31-54 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R31-54 |
| filingDate | 2021-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113156337-B |
| titleOfInvention | Method and device for online identification of single-tube open-circuit fault of VIENNA rectifier and storage medium |
| abstract | The application provides an online identification method for a VIENNA rectifier single tube open-circuit fault, which comprises the following steps: acquiring instantaneous amplitude of three-phase input current of the rectifier in real time, and if the input current of any phase has a zero-value stable region, judging that the phase is a current zero-crossing phase; calculating the zero-value platform duration of the current zero-crossing phase within a first preset time length, and if the zero-value platform duration is greater than a zero-value platform detection threshold, judging the phase as an open-circuit fault phase; converting three-phase input current of the rectifier into an alpha phase current component and a beta phase current component in real time, and delaying the beta phase current component for a second preset time to enable the phases of the alpha phase current component and the beta phase current component to be consistent or reciprocal; when any phase is judged to be a current-passing zero phase, counting the times that the amplitude of a beta-phase current component corresponding to the zero crossing of the current is greater than zero and less than zero within a first preset time period of the phase; and comparing the times that the amplitude of the beta phase current component is greater than zero with the times that the amplitude of the beta phase current component is less than zero, and judging which bridge arm switching tube on the zero phase through which the current flows has a fault. |
| priorityDate | 2020-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID11178 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID454006091 |
Total number of triples: 12.