Experimental Identification of the Optimal Current Vectors for a Permanent-Magnet Synchronous Machine in Wave Energy Converters
This paper investigates efficiency enhancements in Permanent-Magnet Synchronous Machines (PMSMs) used as generators in wave energy converters. A method is presented, which allows experimental identification of the optimal current vectors leading to minimal losses and maximum efficiency. Iron and inv...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-03-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/12/5/862 |
| _version_ | 1828146637840580608 |
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| author | Simon Krüner Christoph M. Hackl |
| author_facet | Simon Krüner Christoph M. Hackl |
| author_sort | Simon Krüner |
| collection | DOAJ |
| description | This paper investigates efficiency enhancements in Permanent-Magnet Synchronous Machines (PMSMs) used as generators in wave energy converters. A method is presented, which allows experimental identification of the optimal current vectors leading to minimal losses and maximum efficiency. Iron and inverter losses are considered. The proposed identification method is generic and is applicable to any PMSM used as a generator. The obtained results are compared to the well-known Maximum Torque per Current (MTPC) strategy. Two MTPC strategies are investigated: (i) MTPC using linearised flux linkages; and (ii) MTPC using measured, nonlinear flux linkages. For both MTPC strategies, the influence of the Voltage Source Inverter (VSI) is taken into account. All measurements are performed on a simple and cheap industrial-like test bench. All three presented methods lead to increased efficiency. The best efficiency is obtained by the proposed maximum efficiency strategy, where iron and inverter losses are taken into account by proper measurement of the optimal current vectors. |
| first_indexed | 2024-04-11T20:49:48Z |
| format | Article |
| id | doaj.art-1de70a33af1f4f0eb16982fd9ca4b5fe |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T20:49:48Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-1de70a33af1f4f0eb16982fd9ca4b5fe2022-12-22T04:03:53ZengMDPI AGEnergies1996-10732019-03-0112586210.3390/en12050862en12050862Experimental Identification of the Optimal Current Vectors for a Permanent-Magnet Synchronous Machine in Wave Energy ConvertersSimon Krüner0Christoph M. Hackl1Graduate School of the Munich School of Engineering (MSE), Technical University of Munich (TUM) and SINN Power GmbH, Garching 85748, GermanyDepartment of Electrical Engineering and Information Technology, Munich University of Applied Sciences (MUAS) and MSE-Research Group “Control of Renewable Energy Systems”, Technical University of Munich (TUM), Munich 80335, GermanyThis paper investigates efficiency enhancements in Permanent-Magnet Synchronous Machines (PMSMs) used as generators in wave energy converters. A method is presented, which allows experimental identification of the optimal current vectors leading to minimal losses and maximum efficiency. Iron and inverter losses are considered. The proposed identification method is generic and is applicable to any PMSM used as a generator. The obtained results are compared to the well-known Maximum Torque per Current (MTPC) strategy. Two MTPC strategies are investigated: (i) MTPC using linearised flux linkages; and (ii) MTPC using measured, nonlinear flux linkages. For both MTPC strategies, the influence of the Voltage Source Inverter (VSI) is taken into account. All measurements are performed on a simple and cheap industrial-like test bench. All three presented methods lead to increased efficiency. The best efficiency is obtained by the proposed maximum efficiency strategy, where iron and inverter losses are taken into account by proper measurement of the optimal current vectors.http://www.mdpi.com/1996-1073/12/5/862permanent-magnet synchronous machinemaximum torque per currentoptimal controlmaximum efficiencyloss minimizationflux linkage measurementgenerator operation |
| spellingShingle | Simon Krüner Christoph M. Hackl Experimental Identification of the Optimal Current Vectors for a Permanent-Magnet Synchronous Machine in Wave Energy Converters Energies permanent-magnet synchronous machine maximum torque per current optimal control maximum efficiency loss minimization flux linkage measurement generator operation |
| title | Experimental Identification of the Optimal Current Vectors for a Permanent-Magnet Synchronous Machine in Wave Energy Converters |
| title_full | Experimental Identification of the Optimal Current Vectors for a Permanent-Magnet Synchronous Machine in Wave Energy Converters |
| title_fullStr | Experimental Identification of the Optimal Current Vectors for a Permanent-Magnet Synchronous Machine in Wave Energy Converters |
| title_full_unstemmed | Experimental Identification of the Optimal Current Vectors for a Permanent-Magnet Synchronous Machine in Wave Energy Converters |
| title_short | Experimental Identification of the Optimal Current Vectors for a Permanent-Magnet Synchronous Machine in Wave Energy Converters |
| title_sort | experimental identification of the optimal current vectors for a permanent magnet synchronous machine in wave energy converters |
| topic | permanent-magnet synchronous machine maximum torque per current optimal control maximum efficiency loss minimization flux linkage measurement generator operation |
| url | http://www.mdpi.com/1996-1073/12/5/862 |
| work_keys_str_mv | AT simonkruner experimentalidentificationoftheoptimalcurrentvectorsforapermanentmagnetsynchronousmachineinwaveenergyconverters AT christophmhackl experimentalidentificationoftheoptimalcurrentvectorsforapermanentmagnetsynchronousmachineinwaveenergyconverters |