赵玮, 曲小慧, 连静, 马春伟. 一种具有高抗偏移特性的通用复合式IPT耦合器[J]. 中国电机工程学报, 2022, 42(20): 7343-7351. DOI: 10.13334/j.0258-8013.pcsee.213361
引用本文: 赵玮, 曲小慧, 连静, 马春伟. 一种具有高抗偏移特性的通用复合式IPT耦合器[J]. 中国电机工程学报, 2022, 42(20): 7343-7351. DOI: 10.13334/j.0258-8013.pcsee.213361
ZHAO Wei, QU Xiaohui, LIAN Jing, MA Chunwei. A Universal Hybrid IPT Coupler With High Tolerance to Pad Misalignment[J]. Proceedings of the CSEE, 2022, 42(20): 7343-7351. DOI: 10.13334/j.0258-8013.pcsee.213361
Citation: ZHAO Wei, QU Xiaohui, LIAN Jing, MA Chunwei. A Universal Hybrid IPT Coupler With High Tolerance to Pad Misalignment[J]. Proceedings of the CSEE, 2022, 42(20): 7343-7351. DOI: 10.13334/j.0258-8013.pcsee.213361

一种具有高抗偏移特性的通用复合式IPT耦合器

A Universal Hybrid IPT Coupler With High Tolerance to Pad Misalignment

  • 摘要: 为实现高效高可靠的感应式无线电能传输(inductive power transfer,IPT),其耦合机构的原边和副边侧线圈应保持精准对齐,但在很多应用中线圈偏移不可避免。因此,文中提出一种具有高抗偏移特性通用复合式IPT耦合器,该复合式IPT耦合器通过结合一个4线圈的BP耦合器和一个高阶的PS-S或S-SP补偿网络,可有效实现高抗偏移能力,适用于任意补偿网络。同时,高阶网络的接入,使得BP耦合器原边或副边同一侧两个交叠的线圈可有效解耦,简化设计。另一侧两个交叠的线圈虽仍然相互耦合,但其参数设计只需考虑交叉耦合足够小即可,进一步简化BP耦合器的设计难度,无需迭代重复设计。最后,基于该复合式IPT耦合器构建一台3kW的抗偏移IPT系统,采用S-S补偿网络,输出不受负载和耦合变化影响的恒定电流,适合于电动汽车电池充电场合,实验结果验证了理论分析的正确性。

     

    Abstract: To realize the efficient and reliable inductive power transfer (IPT) system, primary and secondary pads should be well aligned. However, it is inevitable with pad misalignment in many practical IPT applications. To solve this issue, this paper proposed a kind of universal hybrid IPT couplers with high tolerance to pad misalignment, which combined a conventional bipolar (BP) coupler and a high-order compensation network of parallel-series-series (PS-S) or series-series-parallel (PS-S). Moreover, the proposed hybrid IPT couplers were applicable to all IPT topologies. Besides, the introduction of high-order network can simplify the design of BP coupler, where one set of two overlapped coils on the same side can be effectively decoupled. Although the other set of two overlapped coils still couple together, the coupling inductance can be readily designed to guarantee cross-coupling inductances as small as possible, which can save the iteration design of BP coupler. Finally, a 3kW IPT prototype using the proposed hybrid coupler and S-S compensation was built to illustrate the design of the IPT system with constant current (CC) output under both load and coupling variations. Experimental results verified the theoretical analysis well.

     

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