基于重构LCC-LCC补偿拓扑的无线电能传输系统抗偏移及稳定双端输出特性研究

doi:10.19595/j.cnki.1000-6753.tces.250859

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Abstract Dual-port inductive power transfer systems are widely used in applications such as automated guided vehicles and multi-module synchronous charging. However, misalignment between coils can cause fluctuations in the system's output. Most existing compensation topologies resist output misalignment, but all have limitations in coil design and adaptation. Based on the traditional LCC-LCC compensation topology, this paper proposes a reconfiguration method and a design method for compensation parameters to improve misalignment resistance and increase the degree of freedom in coil design.
First, two schemes for achieving the system's purely resistive input are derived by establishing its equivalent-circuit model. Then, a scheme for designing the compensation capacitor parameters based on the tempering factor is proposed, enabling synchronous two-port constant-voltage and constant-current outputs. Two types of tempering factors are identified by analyzing the parameters of the magnetically coupled structure to determine whether it exhibits the offset-resistant characteristic. The first type exploits the stable change in the mutual inductance offset to establish a mapping between the mutual inductance offset ratio and the compensation structure parameters, thereby suppressing the system's equivalent mutual inductance fluctuations. The second type controls the output gain by modulating the equivalent mutual inductance parameter, fully accounting for the influence of coil mutual inductance on the system's output fluctuations. It can be adapted to various conditioning factors by adjusting the parameters of the magnetic coupling structure, offering great flexibility and configurability. Finally, the experimental results show that the maximum fluctuations in the system output current and output voltage are kept within 9% under a zero-phase-angle input, 300% load variation, and 50% coil misalignment.
The following conclusions can be obtained. (1) By analyzing the LCC-LCC compensation topology, a parameter scheme was developed to achieve purely resistive input without additional compensation components. It enables dual-port output adaptability in multi-load-coupling scenarios, overcoming the limitations of traditional single-port topologies. (2) A single-receiver design with optimized capacitor parameters enables load-independent dual-port output. Both outputs exhibit <7% voltage fluctuation over a 300% load variation, eliminating the need for decoupling multiple coils (a drawback of conventional dual-receiver systems).
(3) Through the theoretical analysis of the dual-output gain, different tuning factor configuration strategies are adopted, which effectively improve the parameter adaptability and flexibility under multi-modal conditions.

Key words： Inductive power transfer (IPT) dual port output strong anti offset characteristics modulation factor

Received: 20 May 2025

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TM724

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	Ben Tong
	Shan Zhichao
	Chen Long
	Zhan Xian

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Ben Tong,Shan Zhichao,Chen Long等. Research on Anti-Misalignment Characteristics and Stable Dual-Port Output Performance in Wireless Power Transfer Systems Based on Reconfigured LCC-LCC Compensation Topology[J]. Transactions of China Electrotechnical Society, 2026, 41(8): 2521-2534.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.250859 OR https://dgjsxb.ces-transaction.com/EN/Y2026/V41/I8/2521

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