| Project/Area Number |
15K05944
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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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 |
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| Co-Investigator(Kenkyū-buntansha) |
附田 正則 北九州市環境エレクトロニクス研究所, 先進パワーデバイス研究室, 主任研究員 (00579154)
大村 一郎 九州工業大学, 大学院生命体工学研究科, 教授 (10510670)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | パワーデバイス / 熱解析 / 信頼性 / 超音波顕微鏡 / 超音波 / 温度分布 / 故障解析 |
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| Outline of Final Research Achievements |
The principle of visualizing the temperature distribution inside the power device was experimentally confirmed. This technique is utilized the principle that the speed of the sound propagating inside the devices changes depending on the temperature change of the material. Measurement method for experimentally confirming this principle was established by integrating ultrasonic microscope, power supply system, device cooling system, temperature measurement system. It was experimentally confirmed that the detection time of the reflected wave from the interface changes depending on the temperature change inside the device. In order to analyze and visualize the temperature distribution, a simulation tool to analyze the temperature gradient inside the device was also developed.
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