2012 Fiscal Year Final Research Report
Study on Control Technique of Power Electronics System for Wireless Power Transfer via Electromagnetic Resonance Coupling
| Project/Area Number |
23656190
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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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 | The University of Tokyo |
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Principal Investigator |
IMURA Takehiro 東京大学, 大学院・新領域創成科学研究科, 助教 (30596193)
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| Project Period (FY) |
2011 – 2012
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| Keywords | ワイヤレス電力伝送 / インピーダンスマッチング / パワーエレクトロニクス |
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| Research Abstract |
Electromagnetic resonance coupling is a new wireless power transfer technology. This technology is highly dependent on load values and fast control technique is required. Typically, control is implemented by switching condensers with different values. However the mechanical switches used have slow response. Therefore, a fast control of power electronics circuit for impedance matching is needed. The method combines power electronics and magnetic resonance coupling. The establishments of three areas are proposed in this research. (1) Impedance matching using power electronics circuit: in this study, fast control technique with power electronics is used to prevent efficiencydrop due to load value change. (2) Estimation method: estimating the load values from transmitting side. (3) Power division: controllable power division regardless of the number of receiver.
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