Abstract
This article presents a novel contactless capacitive energy and data transfer system. The system is used to supply and communicate with low power devices especially for applications with limited space. A typical use case are sensors in electrical machines or in gearboxes. Regarding this, commonly used inductive data and energy transfer systems are spatially too large. Basis of the work is an auto-resonant power oscillator, commonly called royer converter, which provides a frequency shift key modulation by changing the capacitance of its own resonant circuit. To evaluate the novel data transfer, the system is set up and some measurements are presented to show the satisfactory result.
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