A Study on the Optimal Magnetic Beam Forming of Coil Arrays for Long Distance Wireless Power Transmission
Multiple-input multiple-output (MIMO) wireless power transfer (WPT) technology which employs multiple transmitter (TX) coils to simultaneously couple power to the receiver (RX) coil has proved to be an effective technique to enhance power transfer efficiency (PTE). Conventional MIMO-WPT systems rely...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/11/5312 |
| _version_ | 1797596687540158464 |
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| author | Myeong-Jun Oh Patrick Danuor Young-Bae Jung |
| author_facet | Myeong-Jun Oh Patrick Danuor Young-Bae Jung |
| author_sort | Myeong-Jun Oh |
| collection | DOAJ |
| description | Multiple-input multiple-output (MIMO) wireless power transfer (WPT) technology which employs multiple transmitter (TX) coils to simultaneously couple power to the receiver (RX) coil has proved to be an effective technique to enhance power transfer efficiency (PTE). Conventional MIMO-WPT systems rely on the phase-calculation method based on the phased-array beam steering concept to constructively combine the magnetic fields induced by the multiple TX coils at the RX coil. However, increasing the number and distance of the TX coils in an attempt to enhance the PTE tends to deteriorate the received signal at the RX coil. In this paper, a phase-calculation method is presented that enhances the PTE of the MIMO-WPT system. The proposed phase-calculation method considers the coupling between the coils and applies the phase and amplitude to calculate the coil control data. From the experimental results, the transfer efficiency is enhanced as a result of the transmission coefficient improvement from a minimum of 2 dB to a maximum of 10 dB for the proposed method as compared to the conventional one. By implementing the proposed phase-control MIMO-WPT, high-efficiency wireless charging is realizable wherever electronic devices are located in a specific space. |
| first_indexed | 2024-03-11T02:56:33Z |
| format | Article |
| id | doaj.art-47ecb3bf01a44f649feb1812fcdd5447 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T02:56:33Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-47ecb3bf01a44f649feb1812fcdd54472023-11-18T08:35:29ZengMDPI AGSensors1424-82202023-06-012311531210.3390/s23115312A Study on the Optimal Magnetic Beam Forming of Coil Arrays for Long Distance Wireless Power TransmissionMyeong-Jun Oh0Patrick Danuor1Young-Bae Jung2Department of Electronics Engineering, Hanbat National University, Daejeon 34158, Republic of KoreaDepartment of Electronics Engineering, Hanbat National University, Daejeon 34158, Republic of KoreaDepartment of Electronics Engineering, Hanbat National University, Daejeon 34158, Republic of KoreaMultiple-input multiple-output (MIMO) wireless power transfer (WPT) technology which employs multiple transmitter (TX) coils to simultaneously couple power to the receiver (RX) coil has proved to be an effective technique to enhance power transfer efficiency (PTE). Conventional MIMO-WPT systems rely on the phase-calculation method based on the phased-array beam steering concept to constructively combine the magnetic fields induced by the multiple TX coils at the RX coil. However, increasing the number and distance of the TX coils in an attempt to enhance the PTE tends to deteriorate the received signal at the RX coil. In this paper, a phase-calculation method is presented that enhances the PTE of the MIMO-WPT system. The proposed phase-calculation method considers the coupling between the coils and applies the phase and amplitude to calculate the coil control data. From the experimental results, the transfer efficiency is enhanced as a result of the transmission coefficient improvement from a minimum of 2 dB to a maximum of 10 dB for the proposed method as compared to the conventional one. By implementing the proposed phase-control MIMO-WPT, high-efficiency wireless charging is realizable wherever electronic devices are located in a specific space.https://www.mdpi.com/1424-8220/23/11/5312beam steeringmultiple-input multiple-output (MIMO)multiple transmittersphase controlpower transfer efficiency (PTE)wireless power transfer (WPT) |
| spellingShingle | Myeong-Jun Oh Patrick Danuor Young-Bae Jung A Study on the Optimal Magnetic Beam Forming of Coil Arrays for Long Distance Wireless Power Transmission Sensors beam steering multiple-input multiple-output (MIMO) multiple transmitters phase control power transfer efficiency (PTE) wireless power transfer (WPT) |
| title | A Study on the Optimal Magnetic Beam Forming of Coil Arrays for Long Distance Wireless Power Transmission |
| title_full | A Study on the Optimal Magnetic Beam Forming of Coil Arrays for Long Distance Wireless Power Transmission |
| title_fullStr | A Study on the Optimal Magnetic Beam Forming of Coil Arrays for Long Distance Wireless Power Transmission |
| title_full_unstemmed | A Study on the Optimal Magnetic Beam Forming of Coil Arrays for Long Distance Wireless Power Transmission |
| title_short | A Study on the Optimal Magnetic Beam Forming of Coil Arrays for Long Distance Wireless Power Transmission |
| title_sort | study on the optimal magnetic beam forming of coil arrays for long distance wireless power transmission |
| topic | beam steering multiple-input multiple-output (MIMO) multiple transmitters phase control power transfer efficiency (PTE) wireless power transfer (WPT) |
| url | https://www.mdpi.com/1424-8220/23/11/5312 |
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