基于并联双通道混合拓扑的感应电能传输系统输出抗偏移特性研究

doi:10.19595/j.cnki.1000-6753.tces.250422

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Abstract In inductive power transfer systems, output current fluctuations caused by magnetic-coupling structure offsets are a key issue that constrains system performance. Existing hybrid topology methods that optimize compensating inductance and magnetic coupling parameters can improve offset resistance but sacrifice the ability to regulate the system's output current, creating a trade-off between robustness and output regulation capability. This paper proposes an induced electric energy transmission system based on LCC-LCC and LCC-S parallel hybrid topology and parameter optimization method. By establishing a multi-degree-of-freedom parameter model of the dual-compensation circuit, an independent control mechanism for the output gain is developed, and a multi-objective optimization strategy is employed to enhance anti-skewing performance and current-regulation capability.
First, based on orthogonal winding self-decoupling theory, orthogonally distributed Leeds winding structures are designed on both the primary and secondary sides to mitigate cross-coupling. Then, a parallel- stacked compensation circuit is constructed to achieve a constant-current output by separately modeling the two compensating topologies. The output current gain of the two topologies is proportional to the mutual inductance of the coil and is inversely proportional to the mutual inductance of the coil. Then, a dual-degree-of-freedom regulation strategy is proposed. The output gain control of the LCC-S compensation circuit is achieved by introducing the inverse ratio coefficient k_α, the inductance parameter L_r of the LCC-LCC compensation circuit is synchronously optimized to achieve gain calibration, and the initial value-setting mechanism for the system output current is constructed based on k_α and L_f2. A multi-objective compensation circuit model is developed based on the fluctuation ratios of the output currents, with k_α and L_f2as variables, improving anti-offset performance even under the preset output current. Finally, the experimental results show that constant-current output control within ±89.7% mutual inductance fluctuation can be achieved without optimizing the parameters of the magnetic coupling mechanism. The maximum fluctuation in the system's output current is no more than ±7% when the load varies by 200% and the coil offset is 57.14%.
The following conclusions can be drawn. (1) Compared with the traditional hybrid topology, the proposed LCC-LCC and LCC-S parallel hybrid topology not only realizes independent control of the dual compensation loops but also regulates the system output current under a wide voltage input condition, reducing the system output control complexity. (2) By optimizing the compensation inductor L_f2 and the introduced inverse ratio coefficient k_α, the limitations of the traditional single inductor parameter regulation are broken through, and the offset-resistant constant-current output can be realized without optimizing the parameters of the magnetic coupling mechanism. (3) A dual-objective optimization strategy is proposed to break through the double constraints of the magnetic coupling parameter and the regulating circuit. It is a low-cost and highly versatile scheme.

Key words： Hybrid topology inductive power transfer (IPT) inverse ratio coefficient misalignment tolerance multi-objective optimization

Received: 17 March 2025

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TM724

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	Ben Tong
	Shan Zhichao
	Chen Long
	Tan Long
	You Chang

Cite this article:

Ben Tong,Shan Zhichao,Chen Long等. Research on Output Misalignment Resistance Characteristics of Inductive Power Transfer Systems Based on Parallel Dual-Channel Hybrid Topology[J]. Transactions of China Electrotechnical Society, 2026, 41(6): 1872-1886.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.250422 OR https://dgjsxb.ces-transaction.com/EN/Y2026/V41/I6/1872

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