| Project/Area Number |
21360125
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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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 | Yamagata University |
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Principal Investigator |
HIROSE Seiji 山形大学, 大学院・理工学研究科, 教授 (70007201)
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| Co-Investigator(Kenkyū-buntansha) |
TAMURA Hideki 東北工業大学, 工学部, 准教授 (90396581)
AOYAGI Manabu 室蘭工業大学, 大学院・工学研究科, 教授 (80231786)
TAKANO Takehiro 東北工業大学, 工学部, 名誉教授 (50085411)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2010: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
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| Keywords | 電気機器 / 圧電単結晶 / 圧電トランス / 小形電源 / ACアダプタ / 省エネルギー / エネルギー効率化 / 結晶工学 / 電力工学 |
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| Research Abstract |
This study aims to achieve a miniaturized and high efficiency AC-DC converter without the wiring, by using the single-crystal piezoelectric transformer. As the results of the analysis and measurement, it has been found that the piezoelectric transformer with very high efficiency of about 95% can be achieved. Next, for obtaining the high-performance driving circuit of the piezoelectric transformer, the switching characteristics of the MOSFET switching circuits have been examined in detail in the high-frequency range from around 100kHz to 900kHz. Moreover, the measuring system has been constructed to measure precisely the performance characteristics of the piezoelectric transformer, by controlling the unstable non-linear phenomena appearing during the practical high-power driving of the piezoelectric transformer.
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