Optimal Wireless Power Transfer Circuit without a Capacitor on the Secondary Side

Sabriansyah Rizqika Akbar (), Eko Setiawan, Takuya Hirata and Ichijo Hodaka ()
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Sabriansyah Rizqika Akbar: Informatics Engineering Department, Faculty of Computer Science, University of Brawijaya, Malang 65145, Indonesia
Eko Setiawan: Informatics Engineering Department, Faculty of Computer Science, University of Brawijaya, Malang 65145, Indonesia
Takuya Hirata: Department of Electronic Mechanical Engineering, National Institute of Technology, Oshima College, Yamaguchi 742-2193, Japan
Ichijo Hodaka: Department of Environmental Robotics, Faculty of Engineering, University of Miyazaki, Miyazaki City 889-1692, Japan

Energies, 2023, vol. 16, issue 6, 1-16

Abstract: This study proposes an approach to obtain maximum power via wireless power transfer using a single primary-side capacitor. It is shown that higher power is achieved when compared to the common wireless power transfer circuit under resonance with dual (primary- and secondary-side) capacitors. This approach is divided into three phases. By choosing the capacitor and frequency as freely assignable variables, we symbolically obtain a formula that allows us to determine the optimized capacitance and frequency for maximum power. To verify our method, we used a numerical analysis and compared it with an electronic circuit simulation. The symbolic formula is able to maintain maximum power despite changes in load or in the coupling coefficients.

Keywords: wireless power transfer; resonance; maximum power (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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