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RESEARCH ON EFFICIENCY OPTIMIZATION OF RAIL TRANSIT WIRELESS POWER TRANSMISSION SYSTEM BASED ON ELECTROMAGNETIC DETECTION

By Y. Lin and Y. Lai

Full Article PDF (722 KB)

Abstract:
In the installation of a dynamic wireless power transmission system of rail transit, the distance change among coils causes large power loss under high power conditions. Due to the limitation of detection surface and Doppler effect as well as other deficiencies, the traditional ranging methods cannot be adapted to fast, continuous, and large-area dynamic ranging in the wireless power transmission of rail transit. Therefore, the paper proposes a single coil dynamic wireless power efficiency optimization method based on electromagnetic induction for the first time. The distance between the transmitter and receiver is taken as the intermediate quantity, and the relationship between the detection coil amplitude and the wireless power transmission efficiency is constructed. Firstly, based on electromagnetic field theory, a quantitative relationship among the detection coil amplitude, wireless power transmission efficiency, and coil distance is established. Then detection experimental platform is designed. Finally, relevant experiments are accomplished through the established experimental platform. The experimental results show that for the area with low power transmission efficiency on the whole dynamic wireless power transmission line, relevant ranging data can be obtained by detecting the amplitude.

Citation:
Y. Lin and Y. Lai, "Research on Efficiency Optimization of Rail Transit Wireless Power Transmission System Based on Electromagnetic Detection," Progress In Electromagnetics Research M, Vol. 87, 159-169, 2019.
doi:10.2528/PIERM19090703
http://www.jpier.org/pierm/pier.php?paper=19090703

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