EV’s: Demagnetization Prevention Using Optimization Of PM Machine Operating Region With Integrated Multi-Speed Transmission

EV’s: Demagnetization Prevention Using Optimization Of PM Machine Operating Region With Integrated Multi-Speed Transmission | 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 EV’s: Demagnetization Prevention Using Optimization Of PM Machine Operating Region With Integrated Multi-Speed Transmission Shirish Singh, Rajneesh Kumar, Preeti Sharma This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6197586/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 10 You are reading this latest preprint version Abstract This study offers a well-organized, optimal configuration that is specially made to satisfy the many requirements of electric bikes in more favorable circumstances. Every now and then, permanent magnet (PM) machines in electric vehicles (EVs) encounter difficulties such as large speed range action and considerable field weakening at high temperatures, which can cause permanent demagnetization. In order to mitigate the dangers associated with the field weakening zone, we suggest implementing a multi-speed transmission system to limit working concentrations to a particular speed and torque range. The PM machine’s magnetic characteristics and design, along with the transmission gear ratio, are tuned to reduce the possibility of irreversible demagnetization under all conditions. Comparable analysis using multi-speed transmission structures reveals numerous improvements that result in an increase in reliability by reducing the operating point of field weakening from 57% to 10%. The present work provides a comprehensive approach to enhance the longevity and economic feasibility of PM machines in electric vehicle applications by impeding demagnetization via advanced powertrain architecture.. Physical sciences/Engineering/Electrical and electronic engineering Physical sciences/Engineering/Energy infrastructure Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 20 Nov, 2025 Reviews received at journal 12 Nov, 2025 Reviewers agreed at journal 23 Oct, 2025 Reviews received at journal 22 Jun, 2025 Reviewers agreed at journal 18 Jun, 2025 Reviewers invited by journal 18 Mar, 2025 Editor assigned by journal 18 Mar, 2025 Editor invited by journal 18 Mar, 2025 Submission checks completed at journal 16 Mar, 2025 First submitted to journal 10 Mar, 2025 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-6197586","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":430578670,"identity":"7b2c297b-41ab-4156-b997-d2ea7cb74d0a","order_by":0,"name":"Shirish Singh","email":"","orcid":"","institution":"BITS Pilani","correspondingAuthor":false,"prefix":"","firstName":"Shirish","middleName":"","lastName":"Singh","suffix":""},{"id":430578671,"identity":"5eeb79d2-4be6-4999-94ee-f54af097deae","order_by":1,"name":"Rajneesh Kumar","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABSUlEQVRIie2RP0vDQBTA33HQLilZX2msXyFFaFoQ/Cq5JV3ExcWhhJNAulRcC/0SgiAdLxx0ygco6NAgOCl0rEPE1zRKo62zw/2G4/F4P96fAzAY/id+8djArhUAgsuLLDoATG4i65DSlEyWSuGg9Yey9VyqV5vIhW2bQ5XgjdTLcnUVXpw8RlK9z3rg1W29YrOeZU8jCeshOF5VcVJ/0Jmk+rL7lMjkJkXoR7yGLEULKcPGc7D6sqIg+EGrESvxsBBSNWLaRfMaz2PahTLQkGC5qqrYy6CVf4TifiJkkm8VvmKkHJPC8j0KUhcmubhDIXXZBXCjuKTwfV1wGTTHcy0mNLk+okrapVvs0iFFO3P8Pdh5gOthKG6noyx7i8O2ZyfPdLGw3V4Msux1eHr2Q6H7+1+H2PkOVh5Jfed3qauKAhXFYDAYDMQnz3h0khZZB2MAAAAASUVORK5CYII=","orcid":"","institution":"BITS Pilani","correspondingAuthor":true,"prefix":"","firstName":"Rajneesh","middleName":"","lastName":"Kumar","suffix":""},{"id":430578672,"identity":"cf099535-fd5c-4025-86ce-a67cb420a20c","order_by":2,"name":"Preeti Sharma","email":"","orcid":"","institution":"BITS Pilani","correspondingAuthor":false,"prefix":"","firstName":"Preeti","middleName":"","lastName":"Sharma","suffix":""}],"badges":[],"createdAt":"2025-03-10 17:42:46","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6197586/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6197586/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":78811546,"identity":"a5a54ac2-04c8-4c53-9d2f-cc915d8a6b67","added_by":"auto","created_at":"2025-03-19 09:08:56","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1490993,"visible":true,"origin":"","legend":"","description":"","filename":"TemplateforsubmissionstoScientificReports131.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6197586/v1_covered_90028527-5d61-4b09-a275-26758fc047ab.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"EV’s: Demagnetization Prevention Using Optimization Of PM Machine Operating Region With Integrated Multi-Speed Transmission","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"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 Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-6197586/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6197586/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"This study offers a well-organized, optimal configuration that is specially made to satisfy the many requirements of electric bikes in more favorable circumstances. 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