Comparison among Methods for Induction Motor Low-Intrusive Efficiency Evaluation Including a New AGT Approach with a Modified Stator Resistance
Induction motors consume a great portion of the generated electrical energy. Moreover, most of them work at underloaded conditions, so they have low efficiencies and waste a lot of energy. Because of this, the efficiency estimation of in-service induction motors is a matter of great importance. This...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-03-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/4/691 |
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| author | Camila Paes Salomon Wilson Cesar Sant’Ana Germano Lambert-Torres Luiz Eduardo Borges da Silva Erik Leandro Bonaldi Levy Ely de Lacerda de Oliveira |
| author_facet | Camila Paes Salomon Wilson Cesar Sant’Ana Germano Lambert-Torres Luiz Eduardo Borges da Silva Erik Leandro Bonaldi Levy Ely de Lacerda de Oliveira |
| author_sort | Camila Paes Salomon |
| collection | DOAJ |
| description | Induction motors consume a great portion of the generated electrical energy. Moreover, most of them work at underloaded conditions, so they have low efficiencies and waste a lot of energy. Because of this, the efficiency estimation of in-service induction motors is a matter of great importance. This efficiency estimation is usually performed through indirect methods, which do not require invasive measurements of torque or speed. One of these methods is the modified Air-Gap Torque (AGT) method, which only requires voltage and current data, the stator resistance value, and the mechanical losses. This paper approaches the computation of a modified stator resistance including the mechanical losses effect to be applied in the AGT method for torque and efficiency estimation of induction motors. Some improvements are proposed in the computation of this resistance by using a direct method, as well as the possibility to estimate this parameter directly from the nameplate data of the induction motor. The proposed methodology only relies on line voltages, currents, and nameplate data and is not intrusive. The proposed methodology is analyzed through simulation and validated through experimental results with three-phase induction motors. Also, a comparison of methods for in-service induction motors efficiency estimation is presented for the tested motors. |
| first_indexed | 2024-04-11T22:29:33Z |
| format | Article |
| id | doaj.art-b5017e6f50984575881432083601d819 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T22:29:33Z |
| publishDate | 2018-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b5017e6f50984575881432083601d8192022-12-22T03:59:33ZengMDPI AGEnergies1996-10732018-03-0111469110.3390/en11040691en11040691Comparison among Methods for Induction Motor Low-Intrusive Efficiency Evaluation Including a New AGT Approach with a Modified Stator ResistanceCamila Paes Salomon0Wilson Cesar Sant’Ana1Germano Lambert-Torres2Luiz Eduardo Borges da Silva3Erik Leandro Bonaldi4Levy Ely de Lacerda de Oliveira5Gnarus Institute, Itajuba 37500-052, BrazilGnarus Institute, Itajuba 37500-052, BrazilGnarus Institute, Itajuba 37500-052, BrazilInstitute of System Engineering and Information Technology, Itajuba Federal University, Itajuba37500-903, BrazilGnarus Institute, Itajuba 37500-052, BrazilGnarus Institute, Itajuba 37500-052, BrazilInduction motors consume a great portion of the generated electrical energy. Moreover, most of them work at underloaded conditions, so they have low efficiencies and waste a lot of energy. Because of this, the efficiency estimation of in-service induction motors is a matter of great importance. This efficiency estimation is usually performed through indirect methods, which do not require invasive measurements of torque or speed. One of these methods is the modified Air-Gap Torque (AGT) method, which only requires voltage and current data, the stator resistance value, and the mechanical losses. This paper approaches the computation of a modified stator resistance including the mechanical losses effect to be applied in the AGT method for torque and efficiency estimation of induction motors. Some improvements are proposed in the computation of this resistance by using a direct method, as well as the possibility to estimate this parameter directly from the nameplate data of the induction motor. The proposed methodology only relies on line voltages, currents, and nameplate data and is not intrusive. The proposed methodology is analyzed through simulation and validated through experimental results with three-phase induction motors. Also, a comparison of methods for in-service induction motors efficiency estimation is presented for the tested motors.http://www.mdpi.com/1996-1073/11/4/691condition monitoringefficiency estimationair-gap torqueinduction motorsstator resistance |
| spellingShingle | Camila Paes Salomon Wilson Cesar Sant’Ana Germano Lambert-Torres Luiz Eduardo Borges da Silva Erik Leandro Bonaldi Levy Ely de Lacerda de Oliveira Comparison among Methods for Induction Motor Low-Intrusive Efficiency Evaluation Including a New AGT Approach with a Modified Stator Resistance Energies condition monitoring efficiency estimation air-gap torque induction motors stator resistance |
| title | Comparison among Methods for Induction Motor Low-Intrusive Efficiency Evaluation Including a New AGT Approach with a Modified Stator Resistance |
| title_full | Comparison among Methods for Induction Motor Low-Intrusive Efficiency Evaluation Including a New AGT Approach with a Modified Stator Resistance |
| title_fullStr | Comparison among Methods for Induction Motor Low-Intrusive Efficiency Evaluation Including a New AGT Approach with a Modified Stator Resistance |
| title_full_unstemmed | Comparison among Methods for Induction Motor Low-Intrusive Efficiency Evaluation Including a New AGT Approach with a Modified Stator Resistance |
| title_short | Comparison among Methods for Induction Motor Low-Intrusive Efficiency Evaluation Including a New AGT Approach with a Modified Stator Resistance |
| title_sort | comparison among methods for induction motor low intrusive efficiency evaluation including a new agt approach with a modified stator resistance |
| topic | condition monitoring efficiency estimation air-gap torque induction motors stator resistance |
| url | http://www.mdpi.com/1996-1073/11/4/691 |
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