基于混合补偿网络和双层正交线圈的抗偏移恒流无线电能传输系统研究

感应式无线电能传输(inductive wireless power transfer, IPT)不可避免地受到磁耦合机构偏移的影响。在磁耦合机构发生偏移时，为了使无线电能传输系统仍能具有一定的恒流输出能力，提出一种基于双层正交线圈的抗偏移恒流无线电能传输系统。首先，将LCC-LCC 和LC-LC补偿网络进行输入串联和输出串联，组成双边LCC-LC串联混合补偿网络，并研究其传输特性。其次，设计了一种与满足混合补偿网络要求的双层正交DD(double-layer quadrature DD, DQDD)磁耦合机构，该机构在x、y方向发生偏移时，能实现线圈间的解耦。接着，提出一种系统参数配置方法，通过参数配置可以在磁耦合机构发生一定的偏移时，实现输出电流在开环状态下保持稳定。最后，通过搭建实验平台，验证了以上理论分析的正确性和可行性。

An anti-offset constant current wireless power transmission system based on a hybrid compensation network and double-layer quadrature coils

Inductive wireless power transfer (IPT) is inevitably affected by the offset of the magnetic coupling mechanism. When it is offset, to make the wireless power transmission system still have a certain constant current output capability, this paper proposes an anti-offset constant current wireless transmission system based on double-layer quadrature coils. First, the LCC-LCC and LC-LC compensation networks are connected in series with input and output to form a bilateral LCC-LC series hybrid compensation network, and its transmission characteristics are studied. Secondly, a double-layer quadrature DD (DQDD) magnetic coupling mechanism is designed to meet the requirements of hybrid compensation network. When the mechanism is offset in the x and y directions, decoupling between the coils can be achieved. Then, a system parameter configuration method is proposed. By this, the output current can be kept stable in the open-loop state when a certain offset occurs in the magnetic coupling mechanism. Finally, the correctness and feasibility of the above theoretical analysis are verified by building an experimental platform.