Pre- and Post-Regulation Control of High-frequency Magnetic-Resonance Wireless Power Transfer System with Class-D Rectifier

Hara, Yoshiro; Ohsato, Tatsuki; Sekiya, Hiroo

doi:10.1109/intlec.2018.8612344

Cited by 3 publications

(2 citation statements)

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“…3, where 𝜃 = 𝜔𝑡 = 2𝜋 𝑓 𝑡 is the angular displacement and 𝑓 is the operating frequency. If the pre-post regulation method is adopted for the WPT system, the WPT system works at the optimal condition regardless of load variations [21]. Therefore, it is important to achieve the optimal design at the rated load resistance [13].…”

Section: Wpt System Constructionmentioning

confidence: 99%

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Analysis and Design of 6.78MHz Wireless Power Transfer System for Robot Arm

Tokano

Zhu

Osato

et al. 2022

IEICE Trans. Commun.

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Katsuki TOKANO †a) , Nonmember, Wenqi ZHU †b) , Student Member, Tatsuki OSATO † †c) , Kien NGUYEN †d) , Members, and Hiroo SEKIYA †e) , Senior Member SUMMARY This paper presents a design method of a two-hop wireless power transfer (WPT) system for installing on a robot arm. The class-E inverter and the class-D rectifier are used on the transmission and receiving sides, respectively, in the proposed WPT system. Analytical equations for the proposed WPT system are derived as functions of the geometrical and physical parameters of the coils, such as the outer diameter and height of the coils, winding-wire diameter, and number of turns. Using the analytical equations, we can optimize the WPT system to obtain the design values with the theoretically highest power-delivery efficiency under the size limitation of the robot arm. The circuit experiments are in quantitative agreement with the theoretical predictions obtained from the analysis, indicating the validity of the analysis and design method. The experimental prototype achieved 83.6 % power-delivery efficiency at 6.78 MHz operating frequency and 39.3 W output power.

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Section: Wpt System Constructionmentioning

confidence: 99%

“…Equations ( 13)- (21) show that the equivalent resistance increases as the self-inductance, operating frequency, and coupling coefficient increase. In other words, the equivalent resistance is determined by the coil parameters and the output resistance.…”

Section: Equivalent Resistance and Reactance Of The Reception And Relay Sectionsmentioning

confidence: 99%