Reliability-Oriented Design of Inverter-Fed Low-Voltage Electrical Machines: Potential Solutions
Transportation electrification has kept pushing low-voltage inverter-fed electrical machines to reach a higher power density while guaranteeing appropriate reliability levels. Methods commonly adopted to boost power density (i.e., higher current density, faster switching frequency for high speed, an...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/14/4144 |
| _version_ | 1797527253652865024 |
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| author | Yatai Ji Paolo Giangrande Vincenzo Madonna Weiduo Zhao Michael Galea |
| author_facet | Yatai Ji Paolo Giangrande Vincenzo Madonna Weiduo Zhao Michael Galea |
| author_sort | Yatai Ji |
| collection | DOAJ |
| description | Transportation electrification has kept pushing low-voltage inverter-fed electrical machines to reach a higher power density while guaranteeing appropriate reliability levels. Methods commonly adopted to boost power density (i.e., higher current density, faster switching frequency for high speed, and higher DC link voltage) will unavoidably increase the stress to the insulation system which leads to a decrease in reliability. Thus, a trade-off is required between power density and reliability during the machine design. Currently, it is a challenging task to evaluate reliability during the design stage and the over-engineering approach is applied. To solve this problem, physics of failure (POF) is introduced and its feasibility for electrical machine (EM) design is discussed through reviewing past work on insulation investigation. Then the special focus is given to partial discharge (PD) whose occurrence means the end-of-life of low-voltage EMs. The PD-free design methodology based on understanding the physics of PD is presented to substitute the over-engineering approach. Finally, a comprehensive reliability-oriented design (ROD) approach adopting POF and PD-free design strategy is given as a potential solution for reliable and high-performance inverter-fed low-voltage EM design. |
| first_indexed | 2024-03-10T09:41:23Z |
| format | Article |
| id | doaj.art-a98650d79ee94a8b9b8e374c7da8074f |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T09:41:23Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a98650d79ee94a8b9b8e374c7da8074f2023-11-22T03:40:45ZengMDPI AGEnergies1996-10732021-07-011414414410.3390/en14144144Reliability-Oriented Design of Inverter-Fed Low-Voltage Electrical Machines: Potential SolutionsYatai Ji0Paolo Giangrande1Vincenzo Madonna2Weiduo Zhao3Michael Galea4Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, University of Nottingham Ningbo China, Ningbo 315100, ChinaPower Electronics, Machines and Control Research Group (PEMC), University of Nottingham, Nottingham NG72RD, UKLeonardo Aircraft Division, Innovation Management, 10138 Turin, ItalyKey Laboratory of More Electric Aircraft Technology of Zhejiang Province, University of Nottingham Ningbo China, Ningbo 315100, ChinaKey Laboratory of More Electric Aircraft Technology of Zhejiang Province, University of Nottingham Ningbo China, Ningbo 315100, ChinaTransportation electrification has kept pushing low-voltage inverter-fed electrical machines to reach a higher power density while guaranteeing appropriate reliability levels. Methods commonly adopted to boost power density (i.e., higher current density, faster switching frequency for high speed, and higher DC link voltage) will unavoidably increase the stress to the insulation system which leads to a decrease in reliability. Thus, a trade-off is required between power density and reliability during the machine design. Currently, it is a challenging task to evaluate reliability during the design stage and the over-engineering approach is applied. To solve this problem, physics of failure (POF) is introduced and its feasibility for electrical machine (EM) design is discussed through reviewing past work on insulation investigation. Then the special focus is given to partial discharge (PD) whose occurrence means the end-of-life of low-voltage EMs. The PD-free design methodology based on understanding the physics of PD is presented to substitute the over-engineering approach. Finally, a comprehensive reliability-oriented design (ROD) approach adopting POF and PD-free design strategy is given as a potential solution for reliable and high-performance inverter-fed low-voltage EM design.https://www.mdpi.com/1996-1073/14/14/4144physics-of-failurereliability-oriented designpartial dischargethermal degradationinverter-fed machine |
| spellingShingle | Yatai Ji Paolo Giangrande Vincenzo Madonna Weiduo Zhao Michael Galea Reliability-Oriented Design of Inverter-Fed Low-Voltage Electrical Machines: Potential Solutions Energies physics-of-failure reliability-oriented design partial discharge thermal degradation inverter-fed machine |
| title | Reliability-Oriented Design of Inverter-Fed Low-Voltage Electrical Machines: Potential Solutions |
| title_full | Reliability-Oriented Design of Inverter-Fed Low-Voltage Electrical Machines: Potential Solutions |
| title_fullStr | Reliability-Oriented Design of Inverter-Fed Low-Voltage Electrical Machines: Potential Solutions |
| title_full_unstemmed | Reliability-Oriented Design of Inverter-Fed Low-Voltage Electrical Machines: Potential Solutions |
| title_short | Reliability-Oriented Design of Inverter-Fed Low-Voltage Electrical Machines: Potential Solutions |
| title_sort | reliability oriented design of inverter fed low voltage electrical machines potential solutions |
| topic | physics-of-failure reliability-oriented design partial discharge thermal degradation inverter-fed machine |
| url | https://www.mdpi.com/1996-1073/14/14/4144 |
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