Modular Electromagnetic Transducer for Optimized Energy Transfer via Electric and/or Magnetic Fields
In this paper, a modular electromagnetic transducer that achieves the optimal transfer of energy from the electric and/or magnetic fields is proposed. Both the magnetic field resonance coupling and the influence of the electric field near the copper transducers of the printed circuit board and insid...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/3/1291 |
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| author | George-Claudiu Zărnescu Lucian Pîslaru-Dănescu Athanasios Tiliakos |
| author_facet | George-Claudiu Zărnescu Lucian Pîslaru-Dănescu Athanasios Tiliakos |
| author_sort | George-Claudiu Zărnescu |
| collection | DOAJ |
| description | In this paper, a modular electromagnetic transducer that achieves the optimal transfer of energy from the electric and/or magnetic fields is proposed. Both the magnetic field resonance coupling and the influence of the electric field near the copper transducers of the printed circuit board and inside the FR4-type epoxy material are considered. In our printed arrays of flat transducers, we consider face-to-face capacitances for the study of resonance coupling. Because the space between coil turns is almost double the plate thickness, the coplanar capacitance can be ignored for frequencies under 2 MHz. A radio frequency (RF) transmitter and transducer were built to demonstrate the increased energy transfer efficiency when using both electric and magnetic fields in the near-field region. The transversal leakage flux coupling of a long RF coil was more efficient than a simple axial magnetic field coupling when using pancake transceiver coils. The optimal configuration having one long coil at the base and two or more flat coils as capacitor plates near coil ends generated the highest tandem of magnetic and electrical fields. A power regression tool was used to convert and simplify the transducer current and voltage variation with distance. In this regard, the current change corresponded to magnetic field variation and the voltage change to the electric field variation. New formulas for estimating the near-field region and the self-capacitance of the RF transformer coil are proposed; the optimal function in the frequency domain for a given transducer distance was defined by simulation. |
| first_indexed | 2024-03-11T09:26:31Z |
| format | Article |
| id | doaj.art-c908a158f6b84e3689339889f959948d |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T09:26:31Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-c908a158f6b84e3689339889f959948d2023-11-16T17:58:56ZengMDPI AGSensors1424-82202023-01-01233129110.3390/s23031291Modular Electromagnetic Transducer for Optimized Energy Transfer via Electric and/or Magnetic FieldsGeorge-Claudiu Zărnescu0Lucian Pîslaru-Dănescu1Athanasios Tiliakos2Laboratory of Sensors/Actuators and Energy Harvesting, National Institute for Research and Development in Electrical Engineering ICPE-CA, 030138 Bucharest, RomaniaLaboratory of Sensors/Actuators and Energy Harvesting, National Institute for Research and Development in Electrical Engineering ICPE-CA, 030138 Bucharest, RomaniaNational R&D Institute for Cryogenic and Isotopic Technologies (ICSI), 4 Uzinei Street, 240050 Râmnicu Vâlcea, RomaniaIn this paper, a modular electromagnetic transducer that achieves the optimal transfer of energy from the electric and/or magnetic fields is proposed. Both the magnetic field resonance coupling and the influence of the electric field near the copper transducers of the printed circuit board and inside the FR4-type epoxy material are considered. In our printed arrays of flat transducers, we consider face-to-face capacitances for the study of resonance coupling. Because the space between coil turns is almost double the plate thickness, the coplanar capacitance can be ignored for frequencies under 2 MHz. A radio frequency (RF) transmitter and transducer were built to demonstrate the increased energy transfer efficiency when using both electric and magnetic fields in the near-field region. The transversal leakage flux coupling of a long RF coil was more efficient than a simple axial magnetic field coupling when using pancake transceiver coils. The optimal configuration having one long coil at the base and two or more flat coils as capacitor plates near coil ends generated the highest tandem of magnetic and electrical fields. A power regression tool was used to convert and simplify the transducer current and voltage variation with distance. In this regard, the current change corresponded to magnetic field variation and the voltage change to the electric field variation. New formulas for estimating the near-field region and the self-capacitance of the RF transformer coil are proposed; the optimal function in the frequency domain for a given transducer distance was defined by simulation.https://www.mdpi.com/1424-8220/23/3/1291magnetic and electric fieldtransducerwireless energy transfercoil self-capacitanceair core RF transformers |
| spellingShingle | George-Claudiu Zărnescu Lucian Pîslaru-Dănescu Athanasios Tiliakos Modular Electromagnetic Transducer for Optimized Energy Transfer via Electric and/or Magnetic Fields Sensors magnetic and electric field transducer wireless energy transfer coil self-capacitance air core RF transformers |
| title | Modular Electromagnetic Transducer for Optimized Energy Transfer via Electric and/or Magnetic Fields |
| title_full | Modular Electromagnetic Transducer for Optimized Energy Transfer via Electric and/or Magnetic Fields |
| title_fullStr | Modular Electromagnetic Transducer for Optimized Energy Transfer via Electric and/or Magnetic Fields |
| title_full_unstemmed | Modular Electromagnetic Transducer for Optimized Energy Transfer via Electric and/or Magnetic Fields |
| title_short | Modular Electromagnetic Transducer for Optimized Energy Transfer via Electric and/or Magnetic Fields |
| title_sort | modular electromagnetic transducer for optimized energy transfer via electric and or magnetic fields |
| topic | magnetic and electric field transducer wireless energy transfer coil self-capacitance air core RF transformers |
| url | https://www.mdpi.com/1424-8220/23/3/1291 |
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