A Load-Independent Output Current Method for Wireless Power Transfer Systems with Optimal Parameter Tuning

In current study, a method for achieving load-independent output with the ability to optimize parameter tuning, which is applied wireless power transfer (WPT) systems, analyzed. The proposed technique based on immittance property in passive resonant network (PRN) purpose of transforming voltage/current resource into current/voltage resource. This study determines an conditions-qualified family PRN, associated more appropriate topological description WPT applications. Considering and sink type, comprehensive specification coupling coefficient-based design condition operating point carried out. Moreover, parameters each topology are reconfigured by adjusting proportion active reactive ratios as index size well reduction stresses their elements without changing specified system-level parameters, such loosely coupled transformer frequency, constant outputs. sample selection also out respect absorption parasitic components inherent dc-blocked transformer. Zero-voltage-switching (ZVS) operation switches, minimum conduction losses rectifier diodes within extensive variety load variations, capability consistent generation stable load-regulated achieved. Analytical results show that compensation has fluctuation versus variations coefficient other parameters. Finally, effectiveness methodology evaluated through simulations, practical experiments, compared conventional method.