DC-DC Converter Based Impedance Matching for Maximum Power Transfer of CPT System with High Efficiency

Dai Bui, Tarek M. Mostafa, Aiguo Patrick Hu, Reiji Hattori

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

6 被引用数 (Scopus)

抄録

It is well known that a DC or fully tuned inductive power transfer (IPT) system operating at its maximum power output point results in a low power efficiency being equal or below 50%. Based on the analyses of the maximum power transfer condition against the detuning factor of an LC resonant circuit, this paper proposes a Capacitive Power Transfer (CPT) system which can track the maximum power output using a DC-DC converter, at the same time achieve a high-power efficiency when the circuit is not fully tuned. The method is applied to a voltage-fed inverter at series tuned off-resonance operation for reduced power losses. A prototype system is built with a half-bridge inverter to drive the capacitively coupling circuit, and a buck-boost converter is designed for impedance matching. A perturb and observe algorithm is developed for controlling the duty cycle of the DC-DC converter to track the maximum power against load variations. It is found that under a fixed electric field coupling condition, the system can maintain the maximum power transfer operation at 10W and achieve a power efficiency of about 70% over a wide range of load variation from 5\mathbf{\Omega} to 500\mathbf{\Omega}.

本文言語英語
ホスト出版物のタイトル2018 IEEE PELS Workshop on Emerging Technologies
ホスト出版物のサブタイトルWireless Power Transfer, Wow 2018
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(印刷版)9781538624654
DOI
出版ステータス出版済み - 8 29 2018
イベント2018 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer, Wow 2018 - Montreal, カナダ
継続期間: 7 3 20187 7 2018

出版物シリーズ

名前2018 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer, Wow 2018

その他

その他2018 IEEE PELS Workshop on Emerging Technologies: Wireless Power Transfer, Wow 2018
国/地域カナダ
CityMontreal
Period7/3/187/7/18

All Science Journal Classification (ASJC) codes

  • コンピュータ ネットワークおよび通信
  • 制御と最適化
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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