US Patent 10951064 Coreless power transformer
Patent 10951064 was granted and assigned to Massachusetts Institute of Technology on March, 2021 by the United States Patent and Trademark Office.
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A transformer system is provided that includes four magnetically coupled coils having fixed spacing geometry. The four magnetically coupled coils include a drive coil that produces magnetic fields and a load coil. A first resonant coil is magnetically coupled to the drive coil producing energy that is stored by the first resonant coil. A second resonant coil is magnetically coupled to the first resonant coil to propagate the energy stored in the first resonant coil to the second resonant coil without using a magnetic core. The second resonant coil is then magnetically coupled to the load coil where the energy is transferred to the load coil.
US Patent 10951064 Coreless power transformer
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