| Project/Area Number |
15K18027
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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 | Tokyo University of Science |
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Principal Investigator |
Katayama Noboru 東京理科大学, 理工学部電気電子情報工学科, 講師 (00609373)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 交流インピーダンス / 燃料電池 / 太陽電池 |
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| Outline of Final Research Achievements |
In this study, we introduced wavelet transformation to the DC-DC converter with impedance diagnosis function we have developed to obtain time-dependent impedance in order to improve the measurement accuracy, and compared with short time Fourier transformation, which is also used as time-frequency analysis method. Next, to apply our method to various energy devices and to improve its capacity, we realized measurement for each cell in a fuel cell stack, and investigated the relationship between the SoC and the impedance of a lithium-ion battery under various charge-discharge cycle conditions.
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