Abstract
The paper discuses important construction aspects of resonant wireless power transfer (WPT) system for moving parts of electric machinery. It focuses mainly on key electrical parameters of the systems resonant linkage and its simple and durable construction shape. All presented theoretical presumptions are consequently verified by detailed measurement.
Highlights
In the last few years there has been a growing interest in wireless power transfer systems
Based on the approach presented in [4], [5] and [6], the purpose of this paper is to study the impact on the efficiency of wireless power transfer (WPT) within changing relations between chosen key elements of the structure
CMT and CMR work as components of capacitive coupling matching the impedance of the system
Summary
In the last few years there has been a growing interest in wireless power transfer systems. Parameter MTX-RX represents the mutual inductance between respective coils. CMT and CMR work as components of capacitive coupling matching the impedance of the system. This causes less decrease in value of the operational quality factor Q of resonators L1 and L2 and prevents reflecting the power back to the source. The parameter kTR represents the mutual magnetic coupling coefficient between both coils. In the real structure there is a significant influence of the mutual inductance between neighboring coils which measurably complicates its calculation [8] and [9]. From the G foregoing thoughts it is clear that the large Q1,2 and kTR positively affect (increase) the efficiency of the power transmission through the resonant magnetic coupling system
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