Diversity Analysis of Multiple Transmitters in Wireless Power Transfer System
Nonradiative wireless power transfer is a popular technology that transfers energy over medium range via strongly coupled magnetic resonance. We investigated the effect of transmit diversity on power transfer efficiency under multiple transmitters. We derived closed-form equations for the power tran...
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| Veröffentlicht in: | IEEE transactions on magnetics 2013-06, Vol.49 (6), p.2946-2952 |
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| container_title | IEEE transactions on magnetics |
| container_volume | 49 |
| creator | LEE, Kisong CHO, Dong-Ho |
| description | Nonradiative wireless power transfer is a popular technology that transfers energy over medium range via strongly coupled magnetic resonance. We investigated the effect of transmit diversity on power transfer efficiency under multiple transmitters. We derived closed-form equations for the power transfer efficiency and the optimal load from both coupled mode theory and equivalent circuit model analyses. We also showed that the analytical results obtained from the two types of analysis are basically the same, so they can be expressed as an equivalent equation that consists of a quality factor and coupling coefficient. In addition, we performed simulations using the Ansoft High Frequency Structure Simulator and the Agilent Advanced Design System to demonstrate the accuracy of our analysis. The results show that a multiple-transmitter wireless power-transfer system can improve power transfer efficiency over all regions in both an angular aligned scenario and an angular misaligned scenario, due to the diversity in the transfer of power. |
| doi_str_mv | 10.1109/TMAG.2012.2234132 |
| format | Article |
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We investigated the effect of transmit diversity on power transfer efficiency under multiple transmitters. We derived closed-form equations for the power transfer efficiency and the optimal load from both coupled mode theory and equivalent circuit model analyses. We also showed that the analytical results obtained from the two types of analysis are basically the same, so they can be expressed as an equivalent equation that consists of a quality factor and coupling coefficient. In addition, we performed simulations using the Ansoft High Frequency Structure Simulator and the Agilent Advanced Design System to demonstrate the accuracy of our analysis. The results show that a multiple-transmitter wireless power-transfer system can improve power transfer efficiency over all regions in both an angular aligned scenario and an angular misaligned scenario, due to the diversity in the transfer of power.</description><identifier>ISSN: 0018-9464</identifier><identifier>EISSN: 1941-0069</identifier><identifier>DOI: 10.1109/TMAG.2012.2234132</identifier><identifier>CODEN: IEMGAQ</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Bicycles ; Coils ; Coupled mode theory ; Couplings ; Cross-disciplinary physics: materials science; rheology ; Efficiency ; Electronic countermeasures ; equivalent circuit model ; Exact sciences and technology ; Magnetic resonance ; Magnetism ; Materials science ; Mathematical model ; Other topics in materials science ; Physics ; quality factor ; Resistance ; Studies ; transmit diversity ; Wireless communication ; wireless power transfer</subject><ispartof>IEEE transactions on magnetics, 2013-06, Vol.49 (6), p.2946-2952</ispartof><rights>2014 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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We investigated the effect of transmit diversity on power transfer efficiency under multiple transmitters. We derived closed-form equations for the power transfer efficiency and the optimal load from both coupled mode theory and equivalent circuit model analyses. We also showed that the analytical results obtained from the two types of analysis are basically the same, so they can be expressed as an equivalent equation that consists of a quality factor and coupling coefficient. In addition, we performed simulations using the Ansoft High Frequency Structure Simulator and the Agilent Advanced Design System to demonstrate the accuracy of our analysis. The results show that a multiple-transmitter wireless power-transfer system can improve power transfer efficiency over all regions in both an angular aligned scenario and an angular misaligned scenario, due to the diversity in the transfer of power.</description><subject>Bicycles</subject><subject>Coils</subject><subject>Coupled mode theory</subject><subject>Couplings</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Efficiency</subject><subject>Electronic countermeasures</subject><subject>equivalent circuit model</subject><subject>Exact sciences and technology</subject><subject>Magnetic resonance</subject><subject>Magnetism</subject><subject>Materials science</subject><subject>Mathematical model</subject><subject>Other topics in materials science</subject><subject>Physics</subject><subject>quality factor</subject><subject>Resistance</subject><subject>Studies</subject><subject>transmit diversity</subject><subject>Wireless communication</subject><subject>wireless power transfer</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kE1LA0EMhgdRsFZ_gHhZEI9b5yOdj2OpWoUWBSseh93ZWZiy7dbJVtl_75SW5pKEPHlJXkJuGR0xRs3jcjGZjThlfMS5ACb4GRkwAyynVJpzMqCU6dyAhEtyhbhKLYwZHZDFU_j1EUPXZ5NN0fQYMGvrbLFrurBtfLaMxQbXoesSlIVN9h2ibzxi9tH--XgY16n47LHz62tyURcN-ptjHpKvl-fl9DWfv8_eppN57gQXXa7ACK4Y0wBKQVkJ5QGkdIXTAnxZaiNNDc4bXpW65E4I4_S4AlEBr2SlxJDcH3S3sf3Zeezsqt3FdD9aJiSYFFIkih0oF1vE6Gu7jWFdxN4yaveu2b1rdu-aPbqWdh6OygW6oqnTfy7gaZEr0EA1TdzdgQve-9NYCg1KS_EPKqh1Bg</recordid><startdate>20130601</startdate><enddate>20130601</enddate><creator>LEE, Kisong</creator><creator>CHO, Dong-Ho</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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We investigated the effect of transmit diversity on power transfer efficiency under multiple transmitters. We derived closed-form equations for the power transfer efficiency and the optimal load from both coupled mode theory and equivalent circuit model analyses. We also showed that the analytical results obtained from the two types of analysis are basically the same, so they can be expressed as an equivalent equation that consists of a quality factor and coupling coefficient. In addition, we performed simulations using the Ansoft High Frequency Structure Simulator and the Agilent Advanced Design System to demonstrate the accuracy of our analysis. The results show that a multiple-transmitter wireless power-transfer system can improve power transfer efficiency over all regions in both an angular aligned scenario and an angular misaligned scenario, due to the diversity in the transfer of power.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TMAG.2012.2234132</doi><tpages>7</tpages></addata></record> |
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| ispartof | IEEE transactions on magnetics, 2013-06, Vol.49 (6), p.2946-2952 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Bicycles Coils Coupled mode theory Couplings Cross-disciplinary physics: materials science rheology Efficiency Electronic countermeasures equivalent circuit model Exact sciences and technology Magnetic resonance Magnetism Materials science Mathematical model Other topics in materials science Physics quality factor Resistance Studies transmit diversity Wireless communication wireless power transfer |
| title | Diversity Analysis of Multiple Transmitters in Wireless Power Transfer System |
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