2015 Fiscal Year Final Research Report
Development of Space Charge Measurement System with High Spatial Resolution at High Temperature
| Project/Area Number |
25420297
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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 |
Electronic materials/Electric materials
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| Research Institution | Tokyo City University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 高分子絶縁材料 / 空間電荷分布 / パルス静電応力法 / 直流高電圧 / 高温 / 高位置分解能 / 絶縁破壊 |
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| Outline of Final Research Achievements |
A spatial measurement resolution in a space charge distribution measurement system, using a pulsed elector-acoustic (PEA) method at high temperature was attempt to be improved. To increase an efficiency of an inverter-fed motor, it is necessary to improve a thin insulating layer of a winding wire, and a procedure for estimation of insulating properties of it should be established. We tried to apply a space charge accumulation characteristics to the estimation. Furthermore, the estimation must be carried out at high temperature which is close to actual working condition. However, it was hard to apply an ordinary PEA system to the estimation at high temperature because the spatial resolution was not enough to measure the thin layer. After giving some improvements to the ordinary system, we could have an enough spatial resolution at room temperature. Even at higher temperature, higher resolution was obtained than that of the ordinary system.
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| Free Research Field |
誘電・絶縁材料
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