Focusing on the output voltage reduction caused by variation of the equivalent coupling capacitance in capacitive power transfer (CPT) system, this paper proposes a hybrid control strategy to achieve constant output voltage with the variation. The hybrid automata model is introduced for the cascaded CPT system considering the characteristics of higher order, nonlinear, multi-mode, continuous time and discrete states. The control process of the system is transformed into a selection of boundary transition conditions, which simplify the controller design and implementation. Then, a hybrid automata model of the system is established based on the theory of hybrid system, and the boundary transition of each mode of the system is given. The simulation and experimental results show that the proposed hybrid control strategy can keep the output voltage constant when the coupling capacitance of CPT system varies in a certain range.

中文翻译：

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用于耦合电容变化的容性电力传输系统的混合控制

针对电容功率传输（CPT）系统中等效耦合电容变化引起的输出电压降低，本文提出了一种混合控制策略，以实现输出电压随变化的恒定。考虑到高阶、非线性、多模、连续时间和离散状态的特点，为级联CPT系统引入了混合自动机模型。将系统的控制过程转化为边界转移条件的选择，简化了控制器的设计和实现。然后，基于混合系统理论建立了系统的混合自动机模型，给出了系统各模态的边界转移。