Research on Multiload Wireless Power Transfer Characteristics Based on PT Symmetry

doi:10.16628/j.cnki.2095-8188.2024.12.001

Abstract

Abstract:

In order to solve the problem of the limitation of the PT symmetry region of the original WPT system based on the symmetry principle of the PT symmetry principle S-S,the S-PS topology multiload compensation system based on the PT symmetry principle is adopted.The efficient working range of the system is expanded,and the output power is increased by 50% with the proper capacitance distribution ratio.The magnetic coupler is designed to realize the decoupling between the two receiving coils,which solves the coupling interference problem between the two receiving coils.Simulations verify the effectiveness of the topological circuit,and the decoupling condition of the magnetic coupler is still available under the offset condition.

Key words: parity-time(PT) symmetry, wireless power transmission, coil decoupling, multiple loads, S-PS topology

CLC Number:

TM724

WANG Menghuan, LIU Weiqing. Research on Multiload Wireless Power Transfer Characteristics Based on PT Symmetry[J]. LOW VOLTAGE APPARATUS, 2024, 0(12): 1-9.

Figures/Tables 14

References 17

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参数	数值	参数	数值
L_T/μH	119.087	M_T1/μH	17.324
L₁/μH	61.832	M_T2/μH	10.612
L₂/μH	57.156	M₁₂/nH	33.978(解耦)

参数	数值	参数	数值
M₁₂(X=10 mm)	129.275	M₁₂(X=20 mm)	37.213
M₁₂(Y=10 mm)	8.363	M₁₂(Y=20 mm)	136.704
M₁₂(Z=10 mm)	51.369	M₁₂(Z=20 mm)	19.432

参数	数值	参数	数值
U_dc/V	50	C₂/nF	43.74
L_T/μH	119.087	r_T/Ω	0.12
L₁/μH	61.832	r₁/Ω	0.10
L₂/μH	57.156	r₂/Ω	0.08
C_T/nF	21.9	R_L1/Ω	20
C₁/nF	40.4	R_L2/Ω	20