Adaptive Magnetic Resonance Wireless Power Transfer System with Optimum frequency and Power-Leve Tracking for maintaining highly efficient

Kim, N. Y.

doi:10.1109/icaiic.2019.8669004

Cited by 6 publications

References 11 publications

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A Fractional‐Order Method of Frequency Splitting and Bifurcation Suppression for Wireless Power Transfer Systems

Shu,

Zhang,

Jiang

et al. 2024

Circuit Theory & Apps

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Wireless power transfer (WPT) is an emerging technology that enables the wireless transfer of electrical energy from power supplies to electrical equipment. It has been widely used in electric vehicles, mobile phones, household appliances, medical devices, and other fields. However, the frequency splitting and bifurcation phenomena existing in WPT systems are the fundamental obstacles and challenges that affect the effective operation of WPT systems. In this paper, a method based on the fractional‐order circuit is proposed to simultaneously suppress the frequency splitting and bifurcation phenomena by changing the order of fractional‐order capacitor. By replacing the compensation capacitor in the transmitter of the traditional WPT system with a fractional‐order capacitor, a fractional‐order WPT system is formed. Then, using fractional calculus and circuit theory, the mathematical model of the proposed WPT system containing a fractional‐order capacitor is established, and the frequency splitting and bifurcation phenomena are analyzed. The theoretical results show that the frequency splitting and bifurcation phenomena are suppressed only by adjusting the order of fractional‐order capacitor, and the output power of the original resonant frequency is improved. Finally, the experimental prototype is implemented to validate the theoretical results.

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A Fractional‐Order Method of Frequency Splitting and Bifurcation Suppression for Wireless Power Transfer Systems

Shu,

Zhang,

Jiang

et al. 2024

Circuit Theory & Apps

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Maximum Efficiency Tracking of WPT System Based on Frequency Tracking Control

Zheng,

Wang,

Zhu

2024

IEEJ Transactions Elec Engng

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The parameter variations of magnetically coupled resonant wireless power transmission (MCR‐WPT) system cause frequency splitting and resonant frequency shift, which lead to the system detuning and reduce the transmission efficiency. To solve the problems, a frequency tracking control method based on the phase difference between the primary‐side voltage and the secondary‐side current (Frequency Tracking Control‐the primary‐side voltage and the secondary‐side current, FTC‐PS) in this paper. According to the characteristics that the phase difference between the voltage of transmitting side and the current of receiving side is not affected by frequency splitting, the phase difference is controlled at 90°, so that the system can achieve the maximum transmission efficiency under the condition of frequency splitting and resonant frequency shift. The experimental results show that the method can make the system always work at the natural resonant frequency when the parameters change, and the transmission efficiency is not affected by the frequency splitting phenomenon. © 2024 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

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Variable-Inductor Based Tuning Method for Multiple-Relay Wireless Power Transfer System in Composite Insulator

Huang

et al. 2023

2023 5th Asia Energy and Electrical Engineering Symposium (AEEES)

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Adaptive Magnetic Resonance Wireless Power Transfer System with Optimum frequency and Power-Leve Tracking for maintaining highly efficient

Cited by 6 publications

References 11 publications

A Fractional‐Order Method of Frequency Splitting and Bifurcation Suppression for Wireless Power Transfer Systems

A Fractional‐Order Method of Frequency Splitting and Bifurcation Suppression for Wireless Power Transfer Systems

Maximum Efficiency Tracking of WPT System Based on Frequency Tracking Control

Variable-Inductor Based Tuning Method for Multiple-Relay Wireless Power Transfer System in Composite Insulator

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