8-Plate Multi-Resonant Coupling Using a Class-E2 Power Converter for Misalignments in Capacitive Wireless Power Transfer

Misalignment is a common issue in wireless power transfer systems. It shifts the resonant frequency away from operating that affects flow and efficiency charging station to load. This work proposes novel capacitive (CPT) using an 8-plate multi-resonant coupling minimize effect of misalignments. A single-active switch class-E2 converter utilized achieve multi-resonance through selection different inductors. Simulations show widening band which offers better performance than regular 4-plate for The hardware results 88.5% 20.8 W test, 18.3% higher coupling. Because wider {455–485 kHz}, compared with coupling, proposed design minimized output voltage drop by 15% 10% misalignment. Even large misalignments, improved 40%