研究目的
Investigating the effectiveness of a novel long-distance wireless power transfer (WPT) system using repeater coils to provide power supplies for multiple loads in high voltage applications.
研究成果
The proposed WPT system effectively powers multiple loads over long distances using repeater coils with dual coil design, achieving load-independent characteristics. The system's efficiency and load current characteristics are influenced by coupling coefficients and quality factors. Experimental results validate the system's effectiveness, with a maximum efficiency of about 84%.
研究不足
The study acknowledges the influence of coil parasitic resistances on system efficiency and load current characteristics. The maximum achievable efficiency decreases with an increasing number of loads due to power consumption by parasitic resistances.
1：Experimental Design and Method Selection:
The study employs a novel WPT system design using repeater coils with dual coil design for load-independent characteristics. The system is analyzed using the fundamental harmonics approximation (FHA) method.
2：Sample Selection and Data Sources:
The experimental setup includes 10 loads to validate the system's effectiveness. The coils are made of 660-strand Litz wires to minimize skin effect.
3：List of Experimental Equipment and Materials:
The setup includes coils installed on plexiglass plates, ferrite plates (PC40), an inverter with silicon carbide MOSFETs (C2M0080120D), and a DC source.
4：Experimental Procedures and Operational Workflow:
The system's operational frequency is set at 200kHz, with a fixed distance of 60mm between adjacent units. The system's performance is evaluated based on load current characteristics and system efficiency.
5：Data Analysis Methods:
The analysis includes the impact of parasitic resistances, coupling coefficients, and quality factors on system performance.
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