| Project/Area Number |
16K18061
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Kyushu Institute of Technology |
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Principal Investigator |
Hasegawa Kazunori 九州工業大学, 大学院生命体工学研究科, 助教 (80712637)
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| Research Collaborator |
Omura Ichiro 九州工業大学, 大学院生命体工学研究科, 教授
Nishizawa Shin-ichi 九州大学, 応用力学研究所, 教授
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 直流リンクコンデンサ / 信頼性 / パワーエレクトロニクス回路 / インバータ / 損失測定 / 寿命診断 / 劣化試験 / パワーエレクトロニクス / キャパシタ / 電気機器工学 |
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| Outline of Final Research Achievements |
This study presented methodologies for evaluating capacitors toward highly reliable power electronic converters. A special small-power inverter was designed, constructed, and tested for evaluating capacitors, which provides equivalent voltage and current waveforms to a full-scale inverter although its power rating is less than 1/10 of the full-scale inverter. This study also developed a calorimetric power-loss measurement method with the small-power inverter, which achieved power-loss measurement that is of the order of 1 W. In addition, ageing test of capacitors was carried out to estimate the lifetime of the capacitors. The test revealed that attention should be paid both to the equivalent-series resistance (ESR) and to the capacitance when one monitors health condition of capacitors.
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