Wireless charging technology can perfectly solve the risks and inconveniences caused by DC charging, and its development can greatly promote the development of electric vehicles. The transmitter module or receiver end coil of the wireless charging system can be composed of one or more sets of coils of different shapes or sizes. In this paper, the DDQP was a dual-power mode, which can drive the DD and Q coils respectively. A high-efficiency three-phase wireless charging system based on a decoupling DDQP structure was demonstrated through ANSYS Maxwell simulation-assisted design, optimization of coil structure and parameters, and construction of an experimental platform for testing. Finally, through the actual vehicle verification, the coil efficiency of the charging system can reach up to 92. 97%.
从图 18 可以看出, 在所有情况下, 磁场的峰值都朝向接收器的位置。在完全对准的情况下, 磁场集中在 Z 轴, 电流分布在 A 相和 C 相之间对称。然而, 随着接收器向右移动(X 轴正向), C 相的电流开始增加, 而 A 相和 B 相的电流减少。在 10 cm错位时, 发射器产生的磁场峰值向右移动。最高磁通密度出现在x=10 cm沿线, 与接收器中心重叠。在 20 cm处, 磁场进一步向右移动, 左侧(线圈 A 周围)几乎不产生磁场。这样的磁场定位可以在电动汽车充电时实现出色的磁场控制, 因为无论车辆如何偏移, 磁通量始终位于接收器的中心。
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