Synchronous rectification for contactless power supply utilizing Mn-Zn ferrite core coils

Hidekazu Miura; Shinsuke Arai; Fumihiro Sato; Hidetoshi Matsuki; Tadakuni Sato

doi:10.1063/1.1850852

Synchronous rectification for contactless power supply utilizing Mn-Zn ferrite core coils

Hidekazu Miura, Shinsuke Arai, Fumihiro Sato, Hidetoshi Matsuki, Tadakuni Sato

IRIDeS - Resilient EICT Research Promotion Office

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Contactless power supply systems transmit electric power by electromagnetic induction with a pair of coils. The efficiency and the output voltage depend on parameters of coils. We studied the best parameter values that realize stable high efficiency contactless power supply. In the application with low output voltage, the voltage drop of the diodes becomes dominant power loss. A synchronous rectification was proposed as a solution of this problem. Our contactless power supply system for an artificial heart operates at 190 kHz. We use planar coils with Mn-Zn ferrite cores. Highly stable output voltage and 88% maximum efficiency were realized.

Original language	English
Article number	10Q702
Journal	Journal of Applied Physics
Volume	97
Issue number	10
DOIs	https://doi.org/10.1063/1.1850852
Publication status	Published - 2005 May 15

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abstract = "Contactless power supply systems transmit electric power by electromagnetic induction with a pair of coils. The efficiency and the output voltage depend on parameters of coils. We studied the best parameter values that realize stable high efficiency contactless power supply. In the application with low output voltage, the voltage drop of the diodes becomes dominant power loss. A synchronous rectification was proposed as a solution of this problem. Our contactless power supply system for an artificial heart operates at 190 kHz. We use planar coils with Mn-Zn ferrite cores. Highly stable output voltage and 88% maximum efficiency were realized.",

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AU - Matsuki, Hidetoshi

AU - Sato, Tadakuni

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N2 - Contactless power supply systems transmit electric power by electromagnetic induction with a pair of coils. The efficiency and the output voltage depend on parameters of coils. We studied the best parameter values that realize stable high efficiency contactless power supply. In the application with low output voltage, the voltage drop of the diodes becomes dominant power loss. A synchronous rectification was proposed as a solution of this problem. Our contactless power supply system for an artificial heart operates at 190 kHz. We use planar coils with Mn-Zn ferrite cores. Highly stable output voltage and 88% maximum efficiency were realized.

AB - Contactless power supply systems transmit electric power by electromagnetic induction with a pair of coils. The efficiency and the output voltage depend on parameters of coils. We studied the best parameter values that realize stable high efficiency contactless power supply. In the application with low output voltage, the voltage drop of the diodes becomes dominant power loss. A synchronous rectification was proposed as a solution of this problem. Our contactless power supply system for an artificial heart operates at 190 kHz. We use planar coils with Mn-Zn ferrite cores. Highly stable output voltage and 88% maximum efficiency were realized.

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Synchronous rectification for contactless power supply utilizing Mn-Zn ferrite core coils

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