经胎电场耦合式电力传输系统的研究*

doi:10.19562/j.chinasae.qcgc.2019.010.006

Abstract

Abstract: In view of the serious electromagnetic radiation and high cost of the dynamic magneto-electric wireless power transfer system in electric vehicle, a via-tire electric-field coupled power transfer (ECPT) system is built in this paper by utilizing the inter-board capacitance between the steel belt in tire and the copper plate in ground, to achieve the dynamic wireless power transfer in the course of vehicle driving. Firstly, the inter-board capacitance between the steel belt in tire and the copper plate in ground is analyzed. Then the effects of inter-board capacitance and operating frequency on load power and transmission efficiency are analyzed based on the impedance matching of 2-port network, as the double-resonant topology structure of capacitive coupling, and the methods of circuit topology design and parameter optimization of ECPT system are given. Finally, simulation and experiment are conducted to verify the actual effects of ECPT system, indicating that the wireless power transmission of 60 W is achieved.

Key words: electric-field coupling; wireless power transfer; tire steel belt; capacitive coupling; impedance matching

Chen Xin & Huang Shoudao. A Research on Via-tire Electric-Field Coupled Power Transfer System[J].Automotive Engineering, 2019, 41(10): 1145-1151.

References

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A Research on Via-tire Electric-Field Coupled Power Transfer System

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