This digest presents a novel power scaling architecture in a dynamic capacitive wireless power transfer (WPT) system utilizing an active variable reactance (AVR) rectifier. The AVR rectifier enables continuous compensation, allowing the WPT system to maintain high-efficiency power transfer at a fixed frequency by appropriately distributing power between its two branches. The novel architecture allows for the stacking of modular units on both the input (transmitter) and output (receiver) sides while maintaining high system efficiency, low displacement currents through the air gap, and wide dynamic compensation range. A state-space model of this architecture is developed and used to design a full state feedback controller. To validate the proposed approach, a 6.78 MHz 12-kW dynamic capacitive WPT system with 3 levels is built and tested. The system's operation is demonstrated through both simulations and experiments on the hardware prototype.
