Interoperability Improvement for Rectangular Pad and DD Pad of Wireless Electric Vehicle Charging System Based on Adaptive Position Adjustment
Interoperability Improvement for Rectangular Pad and DD Pad of Wireless Electric Vehicle Charging System Based on Adaptive Position Adjustment
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DOI：
10.1109/tia.2021.3056639
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发表时间：
2021-02
影响因子：
4.4
通讯作者：
Guang Yang;Kai Song;Ying Sun;Xiaohua Huang;Jin Li;Guo Yu;Hang Zhang;Qian Zhang;Ren-gui Lu-Re
中科院分区：
文献类型：
--
作者：
Guang Yang;Kai Song;Ying Sun;Xiaohua Huang;Jin Li;Guo Yu;Hang Zhang;Qian Zhang;Ren-gui Lu-Re
近年来，人们对电动汽车的无线充电进行了研究。研究的关键问题之一是如何改善两种常用充电垫——矩形充电垫（RCP）和双d充电垫（DDP）之间的弱互操作性。本文拟对pad错位情况下的互操作性进行建模，并通过调整pad的相对位置来提高互操作性。首先，利用通量模型分析了垫面不对中互操作性的变化。当两个焊盘错位到一定距离时，可以实现充分的输出功率和高的传输效率。其次，通过磁通计算和仿真得到了最优准直；第三，提出了一种基于变步长摄动和观测算法的发射台自适应位置调整方法。通过搜索最大直流输入电流，可以找到发射盘的最佳位置。最后，在实验中，当RCP和DDP在最佳位置互操作时，实现了3.3 kW的输出和95%的线圈效率。与不进行位置调整的场景相比，输出功率和效率的提高证明了该方案可以优化RCP和DDP之间的互操作性。
Wireless charging for electric vehicles has been investigated in recent years. One of the critical issues of the research is to improve the weak interoperability between two popular charging pads—rectangular pad (RCP) and double-D pad (DDP). This article intends to model the interoperability under pad misalignment and improve it by adjusting the pads’ relative position. First, the variation of interoperability with pad misalignment is analyzed by the flux model. Full output power and high transmission efficiency can be achieved when the two pads are misaligned to a certain distance. Second, the optimal misalignment is obtained by flux calculation and simulation. Third, an adaptive position adjustment method for the transmitting pad based on the variable-step perturbation and observation algorithm is proposed. By searching the maximum dc input current, the optimal position of the transmitting pad can be found. Finally, in the experiment, a 3.3 kW output with 95% coil-coil efficiency is realized when the RCP and DDP interoperate at the optimal position. Compared with the scenario without position adjustment, the improvement of output power and efficiency proves that the proposal can optimize the interoperability between the RCP and DDP.