Noncoherent Power Combining for Free-Positioning Wireless Power Transfer in Large Area
In this article, we propose a new coil-energizing method for multitransmitter (Tx) wireless power transfer (WPT) systems that enable complete freedom of receiver (Rx) positioning in a large area. The principle is based on noncoherent power combining, where multiple Tx coils are supplied in a predefi...
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| Veröffentlicht in: | IEEE transactions on industrial electronics (1982) 2024-11, Vol.71 (11), p.13980-13990 |
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| container_title | IEEE transactions on industrial electronics (1982) |
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| creator | Liu, Yining Al Mahmud, Shamsul Arefeen Ha-Van, Nam Jayathurathnage, Prasad Kyyra, Jorma Tretyakov, Sergei A. |
| description | In this article, we propose a new coil-energizing method for multitransmitter (Tx) wireless power transfer (WPT) systems that enable complete freedom of receiver (Rx) positioning in a large area. The principle is based on noncoherent power combining, where multiple Tx coils are supplied in a predefined pattern by mixing two slightly different frequencies and four different phase angles. The powers delivered from Tx coils at two frequencies are then combined incoherently at the Rx side, resulting in full positional and rotational freedom for the Rx charging. The power transfer blind spots in conventional WPT systems are completely eliminated with the proposed noncoherent power combining method due to its natural robustness against cancelations. The experimental setup shows constant dc-dc power transfer efficiency around 90% for arbitrary Rx movements without any further requirements on dynamic controls of Txs or Rxs other than the simplest activation/deactivation. |
| doi_str_mv | 10.1109/TIE.2024.3374391 |
| format | Article |
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The principle is based on noncoherent power combining, where multiple Tx coils are supplied in a predefined pattern by mixing two slightly different frequencies and four different phase angles. The powers delivered from Tx coils at two frequencies are then combined incoherently at the Rx side, resulting in full positional and rotational freedom for the Rx charging. The power transfer blind spots in conventional WPT systems are completely eliminated with the proposed noncoherent power combining method due to its natural robustness against cancelations. The experimental setup shows constant dc-dc power transfer efficiency around 90% for arbitrary Rx movements without any further requirements on dynamic controls of Txs or Rxs other than the simplest activation/deactivation.</description><identifier>ISSN: 0278-0046</identifier><identifier>EISSN: 1557-9948</identifier><identifier>DOI: 10.1109/TIE.2024.3374391</identifier><identifier>CODEN: ITIED6</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Blind spots elimination ; Coils ; Couplings ; full charging freedom ; Inductance ; large transmitting area ; noncoherent power combining ; Robust control ; Spirals ; Time-frequency analysis ; Voltage control ; Wireless power transfer ; Wireless power transmission ; wireless power transmission (WPT)</subject><ispartof>IEEE transactions on industrial electronics (1982), 2024-11, Vol.71 (11), p.13980-13990</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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The experimental setup shows constant dc-dc power transfer efficiency around 90% for arbitrary Rx movements without any further requirements on dynamic controls of Txs or Rxs other than the simplest activation/deactivation.</description><subject>Blind spots elimination</subject><subject>Coils</subject><subject>Couplings</subject><subject>full charging freedom</subject><subject>Inductance</subject><subject>large transmitting area</subject><subject>noncoherent power combining</subject><subject>Robust control</subject><subject>Spirals</subject><subject>Time-frequency analysis</subject><subject>Voltage control</subject><subject>Wireless power transfer</subject><subject>Wireless power transmission</subject><subject>wireless power transmission (WPT)</subject><issn>0278-0046</issn><issn>1557-9948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>ESBDL</sourceid><sourceid>RIE</sourceid><recordid>eNpNkE1LAzEQhoMoWKt3Dx4WPG-dfGyyOZbSamHRHqoeQ7qd1JR2U5Mt4r93-3HwNC_D887AQ8g9hQGloJ_m0_GAARMDzpXgml6QHi0KlWstykvSA6bKHEDIa3KT0hqAioIWPfLxGpo6fGHEps1m4QdjNgrbhW98s8pciNkkIuazkHzrw3H56SNuMKUzPY-2Sa4LvskqG1eYDSPaW3Ll7Cbh3Xn2yftkPB-95NXb83Q0rPKalarNUUnLOKMcaiFqCrCsQXApaaGFdUIzxTkTioJdIl24Y5KqRMmWWoF1vE8eT3d3MXzvMbVmHfax6V4aDlqCVKooOwpOVB1DShGd2UW_tfHXUDAHe6azZw72zNleV3k4VTwi_sOFKpkC_ge2VGnG</recordid><startdate>20241101</startdate><enddate>20241101</enddate><creator>Liu, Yining</creator><creator>Al Mahmud, Shamsul Arefeen</creator><creator>Ha-Van, Nam</creator><creator>Jayathurathnage, Prasad</creator><creator>Kyyra, Jorma</creator><creator>Tretyakov, Sergei A.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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The principle is based on noncoherent power combining, where multiple Tx coils are supplied in a predefined pattern by mixing two slightly different frequencies and four different phase angles. The powers delivered from Tx coils at two frequencies are then combined incoherently at the Rx side, resulting in full positional and rotational freedom for the Rx charging. The power transfer blind spots in conventional WPT systems are completely eliminated with the proposed noncoherent power combining method due to its natural robustness against cancelations. The experimental setup shows constant dc-dc power transfer efficiency around 90% for arbitrary Rx movements without any further requirements on dynamic controls of Txs or Rxs other than the simplest activation/deactivation.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TIE.2024.3374391</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-4738-9987</orcidid><orcidid>https://orcid.org/0000-0002-8178-0613</orcidid><orcidid>https://orcid.org/0000-0002-9100-0203</orcidid><orcidid>https://orcid.org/0000-0002-6732-8348</orcidid><orcidid>https://orcid.org/0000-0003-0257-5273</orcidid><orcidid>https://orcid.org/0000-0002-8949-6641</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | IEEE transactions on industrial electronics (1982), 2024-11, Vol.71 (11), p.13980-13990 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Blind spots elimination Coils Couplings full charging freedom Inductance large transmitting area noncoherent power combining Robust control Spirals Time-frequency analysis Voltage control Wireless power transfer Wireless power transmission wireless power transmission (WPT) |
| title | Noncoherent Power Combining for Free-Positioning Wireless Power Transfer in Large Area |
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