Analysis and Design of a Multi-Resonant Circuit for Applications of Wireless Capacitive Power Transmission

Capacitive technology for wireless power transmission has been shown to be a good option charging the batteries of electric vehicles. It offers better coupling between transmitter and receiver than inductive transmission. On other hand, it some disadvantages; example, is very sensitive distance plates. Several ideas have recently proposed overcome this disadvantage. However, proper analysis methodology still lacking, as design procedure circuits used in capacitive In paper, an presented applying Z-tank resonant circuit transmission, theoretical based on normalized equations with respect operating resonance frequency. The result where frequency remains constant despite changes simulation results validate proposal; ensure robust, realistic results, parasitic elements were considered all reactive components, robust models built switching elements, such MOSFETs diodes. show that multi-resonant characteristic achieves maximum energy transfer high efficiency.