AGV Anti-Misalignment Wireless Power Transfer System Based on DQD Magnetic Coupler

doi:10.16628/j.cnki.2095-8188.2023.12.002

Abstract

Abstract:

A wireless power transfer(WPT) system based on DQD magnetic coupler is proposed for the problems of fluctuation of coupling coefficient due to coil misalignment and high cost and weight of traditional magnetic coupler in the process of WPT system of automatic guided vehicles (AGV). Firstly, the DQD magnetic coupler is modeled and analyzed by Maxwell finite element simulation software. It is verified that the proposed magnetic core layer structure can save the amount of cores to a large extent while retaining the original coupling coefficient. Secondly, the output characteristics of the WPT system based on the LCC-S compensation topology are derived. The necessity of optimizing the anti-misalignment performance is verified. Finally, an experimental platform is built. The measured and simulated results are basically consistent, which can prove that the DQD magnetic coupler has good anti-divergence performance and verifie the feasibility of the proposed scheme.

Key words: wireless power transfer(WPT), automated guided vehicle(AGV), magnetic coupler, anti-misalignment

CLC Number:

TM724

SU Tianzhang, LIN Jinhui, MAO Xingkui, Zhang Yiming. AGV Anti-Misalignment Wireless Power Transfer System Based on DQD Magnetic Coupler[J]. LOW VOLTAGE APPARATUS, 2023, 0(12): 8-12.

Figures/Tables 9

References 17

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磁芯层类型	耦合系数k	磁芯用量/cm³
全覆盖结构	0.445	225
所提结构	0.438	113

参数	数值	参数	数值
L_P/μH	175.2	C_S/nF	20.08
L_S/μH	175.5	R_L/Ω	50
L_F/μH	69.1	f_S/kHz	85
C_F/nF	53.27	U_IN/V	380
C_P/nF	33.45

偏移类型	最大误差/%	最小误差/%	平均误差/%
水平方向	3.5	0.9	2.1
垂直方向	9.3	0.9	3.6
绕X轴旋转	1.1	0.3	0.6
绕Z轴旋转	0.9	0.2	0.4