Effect of Misalignment of Inductive Wireless Power Transfer Coils

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26-1.pdf (1.1 MB)

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https://powersourcesconference.com/PowerSources23/docs/26-1.pdf

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http://hdl.handle.net/11603/31684

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UMBC Mechanical Engineering Department
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https://orcid.org/0000-0002-6418-7527

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conference papers and proceedings
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Abstract

As inductive wireless power transfer becomes ubiquitous for charging phones and other portable electronics, consumers are less worried about efficiency and more concerned with high charging rates. For a Soldier in the field, less efficiency means they must carry more batteries or fuel, or forgo wireless charging altogether. To determine changes in wireless power transfer efficiency with respect to inductor misalignment, this research develops the equations used to calculate inductance, mutual inductance, and coupling coefficient depending on inductor geometry and distance. The results show that despite inductive coils that are not well coupled, there are strategies to maintain the same power transfer efficiency as perfectly coupled coils.