Implementation of an Accurate Measurement Method for the Spatial Distribution of the Electromagnetic Field in a WPT System
Source abstract
Abstract
In an inductive wireless power transfer (WPT) system, the transferred power depends on the coupling between the transmitter coil and the receiver coil and, consequently, on their spatial positioning with respect to each other. Since this positioning needs to be as flexible as possible, one can design various construction shapes for the coils, in terms of both winding geometry and core geometry. The system efficiency for different positionings and configurations can be assessed if the structure and distribution of the electromagnetic field (EMF) in the space close to the system are determined. In this context, this paper proposes an investigation method based on measuring the intensity of the electromagnetic field generated by the emitting coil in the WPT space in terms of both modulus and direction. The measurements needed to be performed at a sufficient number of points, so that the entire field was determined. The EMF value was estimated by linear spatial interpolation between the measured points. Moreover, this paper presents the method and the results of investigations carried out only in the presence of the emitting coil. Calibration or correction solutions were also proposed to obtain sufficient accuracy, and the viability of the method was therefore demonstrated.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Wireless Power Transfer Systems · Energy Harvesting in Wireless Networks · Antenna Design and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania
Department of Informatics, Mathematics and Electronics, “1 Decembrie 1918” University of Alba Iulia, 510009 Alba Iulia, Romania
Electrotechnics and Measurement Department, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania
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