Research on Parallel Transfer Technology of Power and Signal in MC-WPT System

doi:10.16628/j.cnki.2095-8188.2022.02.005

Abstract

Abstract:

With the development of wireless power transfer technology,its application range is expanding.In order to improve the robustness of the system,to realize high-performance power transfer and signal transfer,more and more applications require the realization of communication function.Based on the technology of magnetically coupled wireless power transfer,the framework of power signal parallel transmission system is designed according to the specific application scenarios.LCC-S structure is selected for power transfer compensation topology.A pair of special coils are added to the traditional power transfer coupling mechanism as communication channel to realize the parallel transfer of power and signal.The feasibility of the system is verified from the point of simulation and experiment.

Key words: wireless power transfer, magnetic coupling resonance, LCC-S resonance compensation topology, power and signal parallel transfer

CLC Number:

TM724

YIN Yong, WANG Chengliang, XIAO Yuhua, GAO Yuan. Research on Parallel Transfer Technology of Power and Signal in MC-WPT System[J]. LOW VOLTAGE APPARATUS, 2022, 0(2): 27-33.

Figures/Tables 14

References 14

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参数	数值
参数	一次侧	二次侧
线圈总匝数/匝	28	28
线圈层数/层	2	2
导体直径/mm	2.56	2.56
线圈外径/mm	100	100
线圈内径/mm	33	33
磁芯尺寸/ (mm×mm×mm)	100×100×2	100×100×2
铝板尺寸/ (mm×mm×mm)	100×100×2	100×100×2

参数	数值
逆变器开关频率f_sw/kHz	150
一次侧能量线圈电感L_p/μH	81.26
二次侧能量线圈电感L_s/μH	81.26
能量线圈互感M/μH	36.63
补偿电感L_f/μH	41.70
补偿电容C_f/nF	26.99
补偿电容C_p/nF	28.45
补偿电容C_s/nF	13.85
二次侧等效负载R_e/Ω	34.6
一次侧数据传输频率f_siga/MHz	0.5
二次侧数据传输频率f_sigb/MHz	0.5
一次侧信号载波频率f_sa/MHz	9
二次侧信号载波频率f_sb/MHz	5
一次侧信号驱动电流I_siga/A	1/9
二次侧信号驱动电流I_sigb/A	1/5
直流母线电压U_dc/V	110