Optimization of Shielded Capacitive Power Transfer Systems Using Slotted Electrodes

To enable the electrodes in electric vehicle (EV) wireless charging environments to provide drainage functionality, this study proposes employing road drainage facilities as the primary transmitting electrodes for the shielded capacitive power transfer (S-CPT) system. This approach not only fulfills the infrastructure requirements of road drainage facilities but also enables wireless charging of EVs in motion. By introducing slotted electrodes, the S-CPT system is optimized to achieve a lighter structure, enhanced drainage performance, and higher transmission efficiency. Experimental results demonstrate that, despite its smaller contact area, the slotted Model C electrode achieved a 6% higher transmission efficiency than the conventional planar electrode at a 50 mm electrode gap, thereby outperforming the planar electrode in efficiency.