AC–DC Converter Based on Parallel Drive of Two Piezoelectric Transformers

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概要

• 論文の詳細を見る

• An AC–DC converter based on a parallel drive of two piezoelectric ceramic transformers was investigated. The transformers operate in a fundamental contour extensional vibration mode which has a large electromechanical coupling factor notwithstanding the use of a piezoelectric transversal effect. The converter includes Al electrolytic capacitors for smoothing circuits and metal oxide semiconductor field effect transistors (MOSFETs) for the switching and rectifying circuits. Maximum converter efficiency of 90% was obtained. The prospect of a low profile, highly efficient and high power (more than 50 W) AC–DC converter with piezoelectric transformers has been obtained through these experimental results.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2008-05-25

著者

• Yamamoto Mitsuru

  System Jisso Research Laboratories, NEC Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Inoue Takeshi

  System Jisso Research Laboratories, NEC Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Hamamura Sunao

  Device Solutions Division, NEC Engineering Ltd., 1753 Shimonumabe, Nakahara-ku, Kawasaki 211-8666, Japan

• Ochi Atsushi

  System Jisso Research Laboratories, NEC Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

• Sasaki Yasuhiro

  System Jisso Research Laboratories, NEC Corporation, 1120 Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan

関連論文

• AC–DC Converter Based on Parallel Drive of Two Piezoelectric Transformers
• Finite-Element Method Analysis of Low-Frequency Wideband Array Composed of Disk Bender Transducers with Differential Connections

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