Critical Evaluation Of Fbd, Pq And Cpt Current Decompositions For Four-wire Circuits
This paper investigates the major similarities and discrepancies of three important current decompositions proposed for the interpretation of unbalanced and/or non linear three-phase four-wire circuits. The considered approaches were the so-called FBD Theory, the pq-Theory and the CPT. Although the...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Eletrônica de Potência
2009-11-01
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| Series: | Eletrônica de Potência |
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| Online Access: | https://journal.sobraep.org.br/index.php/rep/article/view/610 |
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| author | Fernando P. Marafão Helmo K. M. Paredes Luiz C. P. da Silva |
| author_facet | Fernando P. Marafão Helmo K. M. Paredes Luiz C. P. da Silva |
| author_sort | Fernando P. Marafão |
| collection | DOAJ |
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This paper investigates the major similarities and discrepancies of three important current decompositions proposed for the interpretation of unbalanced and/or non linear three-phase four-wire circuits. The considered approaches were the so-called FBD Theory, the pq-Theory and the CPT. Although the methods are based on different concepts, the results obtained under ideal conditions (sinusoidal and balanced signals) are very similar. The main differences appear in the presence of unbalanced and non linear load conditions. It will be demonstrated and discussed how the choice of the voltage referential and the return conductor impedance can influence in the resulting current components, as well as, the way of interpreting a power circuit with return conductor. Under linear unbalanced conditions, both FBD and pq-Theory suggest that the some current components contain a third-order harmonic. Besides, neither pq-Theory nor FBD method are able to provide accurate information for reactive current under unbalanced and distorted conditions, what seems to be done by means of the CPT.
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| format | Article |
| id | doaj-art-40ec0e36ec84404ba774dd321066c7b2 |
| institution | OA Journals |
| issn | 1414-8862 1984-557X |
| language | English |
| publishDate | 2009-11-01 |
| publisher | Associação Brasileira de Eletrônica de Potência |
| record_format | Article |
| series | Eletrônica de Potência |
| spelling | doaj-art-40ec0e36ec84404ba774dd321066c7b22025-08-20T01:47:59ZengAssociação Brasileira de Eletrônica de PotênciaEletrônica de Potência1414-88621984-557X2009-11-0114410.18618/REP.2009.4.277286610Critical Evaluation Of Fbd, Pq And Cpt Current Decompositions For Four-wire CircuitsFernando P. Marafão0Helmo K. M. Paredes1Luiz C. P. da Silva2Campus de Sorocaba, Unesp – Univ Estadual Paulista Av. Três de Março, 511, Sorocaba, SP – Brazil – 18087-180University of Campinas, School of Electrical and Computer Engineering Av. Albert Einstein, 400, Campinas, SP – Brazil – 13083-970University of Campinas, School of Electrical and Computer Engineering Av. Albert Einstein, 400, Campinas, SP – Brazil – 13083-970 This paper investigates the major similarities and discrepancies of three important current decompositions proposed for the interpretation of unbalanced and/or non linear three-phase four-wire circuits. The considered approaches were the so-called FBD Theory, the pq-Theory and the CPT. Although the methods are based on different concepts, the results obtained under ideal conditions (sinusoidal and balanced signals) are very similar. The main differences appear in the presence of unbalanced and non linear load conditions. It will be demonstrated and discussed how the choice of the voltage referential and the return conductor impedance can influence in the resulting current components, as well as, the way of interpreting a power circuit with return conductor. Under linear unbalanced conditions, both FBD and pq-Theory suggest that the some current components contain a third-order harmonic. Besides, neither pq-Theory nor FBD method are able to provide accurate information for reactive current under unbalanced and distorted conditions, what seems to be done by means of the CPT. https://journal.sobraep.org.br/index.php/rep/article/view/610Current decompositionFBD-theoryHarmonicsHomo-variablesPower theorypq-theory |
| spellingShingle | Fernando P. Marafão Helmo K. M. Paredes Luiz C. P. da Silva Critical Evaluation Of Fbd, Pq And Cpt Current Decompositions For Four-wire Circuits Eletrônica de Potência Current decomposition FBD-theory Harmonics Homo-variables Power theory pq-theory |
| title | Critical Evaluation Of Fbd, Pq And Cpt Current Decompositions For Four-wire Circuits |
| title_full | Critical Evaluation Of Fbd, Pq And Cpt Current Decompositions For Four-wire Circuits |
| title_fullStr | Critical Evaluation Of Fbd, Pq And Cpt Current Decompositions For Four-wire Circuits |
| title_full_unstemmed | Critical Evaluation Of Fbd, Pq And Cpt Current Decompositions For Four-wire Circuits |
| title_short | Critical Evaluation Of Fbd, Pq And Cpt Current Decompositions For Four-wire Circuits |
| title_sort | critical evaluation of fbd pq and cpt current decompositions for four wire circuits |
| topic | Current decomposition FBD-theory Harmonics Homo-variables Power theory pq-theory |
| url | https://journal.sobraep.org.br/index.php/rep/article/view/610 |
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