Flexible wireless charger for Automated guided vehicle in smart warehouses

Flexible wireless charger for Automated guided vehicle in smart warehouses | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Flexible wireless charger for Automated guided vehicle in smart warehouses Nguyen The Vinh, Dao Tuan Anh This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9197688/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 8 You are reading this latest preprint version Abstract Automated guided vehicle (AGV) systems in warehouses, used for transporting and sorting goods in automated production lines, are currently improving and automating each stage of the process using various AGV types. This paper presents a study on a converter designed for flexible and efficient wireless power conversion for multiple automated robots operating on a DC microgrid in a smart warehouse. The converter facilitates bidirectional power exchange via three ports integrated into one AGV and between different AGVs without requiring additional systems within the automated robot. The microgrid system will have a rigid structure, similar to a charging distribution grid for the automated robots. With wireless power transmission, flexible energy exchange is possible between the DC microgrid and the automated robots in both directions, and between the robots themselves when not near a fixed charging point within the DC microgrid during transport. A novel retractable coil design is being used in a proposed inductive wireless charging system, demonstrating that small deformations of the coil shape do not affect transmission efficiency. A prototype, five times smaller in size, has been deployed and tested. It successfully transmitted over 200 W of power over a distance of 18 cm with an efficiency of nearly 68.72%. This principle can be applied to various mobile platforms with limited payload space, where remote power and renewable energy sources are required. Physical sciences/Energy science and technology Physical sciences/Engineering Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Full Text Additional Declarations No competing interests reported. Supplementary Files table1.jpg Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 19 May, 2026 Reviews received at journal 14 May, 2026 Reviewers agreed at journal 04 May, 2026 Reviewers invited by journal 20 Apr, 2026 Editor assigned by journal 14 Apr, 2026 Editor invited by journal 13 Apr, 2026 Submission checks completed at journal 31 Mar, 2026 First submitted to journal 31 Mar, 2026 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-9197688","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":626404194,"identity":"2339395b-faf2-455a-9d82-4cd0490535ba","order_by":0,"name":"Nguyen The 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warehouses","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific 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This paper presents a study on a converter designed for flexible and efficient wireless power conversion for multiple automated robots operating on a DC microgrid in a smart warehouse. The converter facilitates bidirectional power exchange via three ports integrated into one AGV and between different AGVs without requiring additional systems within the automated robot. The microgrid system will have a rigid structure, similar to a charging distribution grid for the automated robots. With wireless power transmission, flexible energy exchange is possible between the DC microgrid and the automated robots in both directions, and between the robots themselves when not near a fixed charging point within the DC microgrid during transport. A novel retractable coil design is being used in a proposed inductive wireless charging system, demonstrating that small deformations of the coil shape do not affect transmission efficiency. A prototype, five times smaller in size, has been deployed and tested. It successfully transmitted over 200 W of power over a distance of 18 cm with an efficiency of nearly 68.72%. This principle can be applied to various mobile platforms with limited payload space, where remote power and renewable energy sources are required.","manuscriptTitle":"Flexible wireless charger for Automated guided vehicle in smart warehouses","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-04-27 11:46:08","doi":"10.21203/rs.3.rs-9197688/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"254148274962210303701415497056586019603","date":"2026-05-19T05:21:27+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2026-05-14T18:03:45+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"255952535587430232431689428675775455778","date":"2026-05-05T03:24:30+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2026-04-20T13:50:26+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2026-04-14T07:29:53+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2026-04-13T06:19:42+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2026-04-01T02:54:35+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2026-04-01T02:51:17+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"1db4d059-ab42-4d02-95f8-aa4f1cefb1d4","owner":[],"postedDate":"April 27th, 2026","published":true,"recentEditorialEvents":[{"type":"reviewerAgreed","content":"254148274962210303701415497056586019603","date":"2026-05-19T05:21:27+00:00","index":62,"fulltext":""},{"type":"editorInvitedReview","content":"","date":"2026-05-14T18:03:45+00:00","index":55,"fulltext":""},{"type":"reviewerAgreed","content":"255952535587430232431689428675775455778","date":"2026-05-05T03:24:30+00:00","index":54,"fulltext":""}],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[{"id":66667679,"name":"Physical sciences/Energy science and technology"},{"id":66667680,"name":"Physical sciences/Engineering"}],"tags":[],"updatedAt":"2026-04-27T11:46:09+00:00","versionOfRecord":[],"versionCreatedAt":"2026-04-27 11:46:08","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-9197688","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-9197688","identity":"rs-9197688","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}