研究目的
To improve the interoperability and misalignment tolerance of the inductive power transfer (IPT) system.
研究成果
The proposed elliptical magnetic field-oriented control (FOC) method effectively improves interoperability and misalignment tolerance in IPT systems by dynamically adjusting excitation to align the strongest magnetic field with the secondary winding. Experimental results confirm the effectiveness of circular and elliptical traveling fields, with potential for higher efficiency and output voltage. Future work should focus on interoperation experiments with different secondary pad types.
研究不足
The study acknowledges end effects and gap variations that can affect magnetic field distribution, particularly at large gaps (about 2a) where traveling wave features may disappear. The experimental setup may have limitations in fully simulating real-world misalignment scenarios, and further interoperation experiments are needed.
1：Experimental Design and Method Selection:
The study uses analogy analysis between linear inductive motor (LIM) and IPT to design a 2-phase IPT system with circular and elliptical magnetic field-oriented control (FOC). Theoretical models based on Biot-Savart law and electromagnetic induction are employed.
2：Sample Selection and Data Sources:
Secondary winding structures include circular pads and DD pads, with specific sizes and inductances as per Table I.
3：List of Experimental Equipment and Materials:
A 2-phase IPT system is built with primary coils configured for traveling magnetic fields, using high-frequency inverters, primary and secondary windings, and load resistors.
4：Experimental Procedures and Operational Workflow:
Experiments involve measuring output voltage versus secondary position under different excitation conditions (e.g., varying currents and phases) to verify circular and elliptical magnetic field behaviors.
5：Data Analysis Methods:
Data is analyzed using simulations (e.g., FEM simulations) and calculations to compare with experimental results, focusing on output voltage RMS values and magnetic field distributions.
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