DC Field | Value | Language |
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dc.contributor.author | Song, HS | - |
dc.contributor.author | Nam, K | - |
dc.date.accessioned | 2016-03-31T13:23:11Z | - |
dc.date.available | 2016-03-31T13:23:11Z | - |
dc.date.created | 2009-03-19 | - |
dc.date.issued | 2000-11 | - |
dc.identifier.issn | 1350-2360 | - |
dc.identifier.other | 2001-OAK-0000001751 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/19708 | - |
dc.description.abstract | If a negative sequence is generated by voltage sag and/or unbalance, it appears as an oscillating error in a synchronous reference frame (SRF). In power conditioning equipment, the exact value of a positive sequence is needed to achieve the unity power factor and constant output voltage, whereas the exact value of a negative sequence is needed for unbalance compensation. To measure the positive sequence separately from the negative sequence, a low pass or notch filter having a narrow bandwidth is normally used. However, such a filter causes a lot of phase delay, thus the response time of the system tends to be lengthened. A method of estimating the positive- and the negative-sequence voltages separately is presented, without a significant delay, by utilising the weighted least-squares estimation (WLSE) method with the covariance resetting technique. A frequency update law is also proposed to accommodate the frequency varying environments. The authors demonstrate through simulation and experiment the superior performance of the proposed scheme in measuring the positive- and the negative-sequence voltages at the time of abrupt transition. This method can be applied to uninterruptable power supplies CUPS), pulsewidth modulation (PWM) AC/DC converters, active filters, AC voltage compensators etc. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | IEE-INST ELEC ENG | - |
dc.relation.isPartOf | IEE PROCEEDINGS-GENERATION TRANSMISSION AND DISTRIBUTION | - |
dc.subject | SCHEME | - |
dc.title | Instantaneous phase-angle estimation algorithm under unbalanced voltage-sag conditions | - |
dc.type | Article | - |
dc.contributor.college | 전자전기공학과 | - |
dc.identifier.doi | 10.1049/ip-gtd:20000716 | - |
dc.author.google | Song, HS | - |
dc.author.google | Nam, K | - |
dc.relation.volume | 147 | - |
dc.relation.issue | 6 | - |
dc.relation.startpage | 409 | - |
dc.relation.lastpage | 415 | - |
dc.contributor.id | 10071835 | - |
dc.relation.journal | IEE PROCEEDINGS-GENERATION TRANSMISSION AND DISTRIBUTION | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | IEE PROCEEDINGS-GENERATION TRANSMISSION AND DISTRIBUTION, v.147, no.6, pp.409 - 415 | - |
dc.identifier.wosid | 000166566900015 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | 415 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 409 | - |
dc.citation.title | IEE PROCEEDINGS-GENERATION TRANSMISSION AND DISTRIBUTION | - |
dc.citation.volume | 147 | - |
dc.contributor.affiliatedAuthor | Nam, K | - |
dc.identifier.scopusid | 2-s2.0-0034314309 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 83 | - |
dc.type.docType | Article | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
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