Anti‑misalignment capability optimization for laminated magnetic couplers in wireless charging systems using balanced particle swarm optimization method

Hao Liu; Zhenjie Li; Yuhong Tian; Yiqi Liu; Wenlong Song

Anti‑misalignment capability optimization for laminated magnetic couplers in wireless charging systems using balanced particle swarm optimization method

Vol. 23, No. 2, pp. 345-354, Feb. 2023

10.1007/s43236-022-00527-6

Laminated magnetic coupler

Anti-misalignment capability improvement

BPSO method

wireless power transfer

Abstract

To desensitize wireless charging systems (WCSs) to misalignment and to achieve a stable output voltage without using additional control methods, a laminated magnetic coupler (LMC) optimized by the balanced particle swarm optimization (BPSO) method is proposed to improve the performance of WCSs. First, the output characteristics of the LCC-S compensated WCS are analyzed to illustrate the working principle of the LMC. Next, the misalignment characteristics of the LMC, which employs the magnetic integration technique and coil self-decoupling method, are analyzed. Then, the operating principle of the BPSO method is analyzed and used to optimize the LMC in terms of the mutual inductance and anti-misalignment range. Finally, experimental results indicate that the optimized LMC achieves high-efficiency constant voltage charging within a reasonable horizontal misalignment range. When compared to commonly used methods (such as the exhaustive method) for optimizing magnetic couplers, the BPSO method avoids complex algorithms and a heavy computation burden.

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Cite this article

[IEEE Style]

H. Liu, Z. Li, Y. Tian, Y. Liu, W. Song, "Anti‑misalignment capability optimization for laminated magnetic couplers in wireless charging systems using balanced particle swarm optimization method," Journal of Power Electronics, vol. 23, no. 2, pp. 345-354, 2023. DOI: 10.1007/s43236-022-00527-6.

[ACM Style]

Hao Liu, Zhenjie Li, Yuhong Tian, Yiqi Liu, and Wenlong Song. 2023. Anti‑misalignment capability optimization for laminated magnetic couplers in wireless charging systems using balanced particle swarm optimization method. Journal of Power Electronics, 23, 2, (2023), 345-354. DOI: 10.1007/s43236-022-00527-6.