研究目的
Exploring the impact of large-signal excitation on the performance and temperature rise of the multilayer self-resonant structure (MSRS) to determine its power handling capability.
研究成果
The prototype MSRS is capable of transferring up to about 760 W over a distance of 2.2 cm for a maximum temperature rise of 40 ?C in a 25 ?C environment, with the potential for higher power transfer over shorter distances. Future research includes consideration of winding mutual resistance, more accurate thermal model, and experimental verification.
研究不足
The analysis ignores factors such as internal thermal conduction and heat transfer in the radial direction, mutual resistance of the winding, and the impact of close-range power transfer on heat transfer coefficient. Health and safety limits are not considered.
1：Experimental Design and Method Selection:
The study involves thermal modeling, loss modeling, and circuit modeling to examine the effect of drive level and wireless range on the performance of the WPT system.
2：Sample Selection and Data Sources:
A prototype MSRS with a
3：6 cm diameter is used. List of Experimental Equipment and Materials:
The prototype MSRS comprises a
4：5 mm thick modified pot core of Fair-Rite 67 material with an outer diameter of 6 cm, 16 layers of 5 μm thick copper separated by 5 μm thick PTFE layers. Experimental Procedures and Operational Workflow:
The iterative process involves calculating circuit parameters, losses, and temperature at steady state for various power transfer distances and input current levels.
5：Data Analysis Methods:
The study uses the Steinmetz equation and complex permeability model for core loss calculation and linear interpolation for temperature dependence of Steinmetz loss.
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