A Wide-Voltage-Range Input High-Power-Density Three-Phase Grid-Frequency Isolated Inverter

A Wide-Voltage-Range Input High-Power-Density Three-Phase Grid-Frequency Isolated Inverter | 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 Research Article A Wide-Voltage-Range Input High-Power-Density Three-Phase Grid-Frequency Isolated Inverter Yong Tang, Huiying Tang, Bo Wang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8947226/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract As shipboard distribution systems keep advancing toward miniaturization, integration, and high efficiency, energy storage components have become an integral part of the distribution system. Three-phase inverters are confronted with challenges including a broad DC input voltage range, stringent AC power quality standards, and the demand for high power density. This study presents a hybrid three-phase dual-stage inverter topology that markedly enhances the equivalent switching frequency via multiphase technology, realizing a five-level phase voltage with a fourfold frequency gain and thus lowering the requirement for LC filters. The adoption of a carrier phase-shifting (CPS) modulation scheme effectively suppresses the output common-mode (CM) voltage, thus significantly reducing the design requirements for EMI filters. Through the application of integrated transformer magnetic circuit technology and a three-dimensional (3D) coiled core structure, the overall size and weight of isolation transformers and filter inductors have been significantly reduced. Moreover, the series connection of the transformer's secondary windings enhances the peak amplitude of the AC output voltage while further improving the utilization efficiency of the DC voltage. Through these comprehensive measures, the designed distribution system inverter exhibits the advantages of high system efficiency, strong reliability, cost-effectiveness, compact size, and light weight, making it particularly suitable for high-power applications requiring isolated wide-range DC voltage inputs. wide voltage input multiplex technology carrier phase shift 3D wound core double-Fourier analysis power density Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted 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. 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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-8947226","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":604348408,"identity":"869ec3a0-8b98-4833-998c-13c81f925e29","order_by":0,"name":"Yong Tang","email":"","orcid":"","institution":"Nanchang Institute of Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Yong","middleName":"","lastName":"Tang","suffix":""},{"id":604348409,"identity":"693ab46b-effc-47f4-b082-624a3b147969","order_by":1,"name":"Huiying Tang","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABDUlEQVRIie3RPUvEMBjA8SdUnlvC3ZpDaP0IkQNfvk3KgV164NhBi3LwuIjziaCfwUUcWw56SwXHiA4tDq4d66LmOHDryyiY3/KEkD8kBMCy/iAJ7AzUZs0KFaGLg3nSKxFm7cgqH06GPFMdycY6wfE1uf6tCHdak30xJVE+nsajm4vnbY57AUEIUEcPjcnhwifh5ysh3vLjCedHM4KnhF3mr80X0+uEMgE6VFMushmxK+Uw6pF4Jlly+R2gw2Wf5ERIHaTnC4UKsSvJy/mBT8n4XocOVAnuEkeVtr5lFZQvnxSPXB181P4Xet7de1rUUXNibJk/WZrJ5e9W0nbecCqA2MxB0XHQsizrv/oBPrVd/i3kwacAAAAASUVORK5CYII=","orcid":"","institution":"School of Mechanical and Electrical Engineering","correspondingAuthor":true,"prefix":"","firstName":"Huiying","middleName":"","lastName":"Tang","suffix":""},{"id":604348410,"identity":"2c82d037-8063-4aec-8e2c-f8c19c28b982","order_by":2,"name":"Bo Wang","email":"","orcid":"","institution":"Nanchang Institute of Science and Technology","correspondingAuthor":false,"prefix":"","firstName":"Bo","middleName":"","lastName":"Wang","suffix":""}],"badges":[],"createdAt":"2026-02-23 12:41:13","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-8947226/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-8947226/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":109205397,"identity":"6c4ffe02-d1fb-446d-9197-9cfd55e5d759","added_by":"auto","created_at":"2026-05-13 15:04:35","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1087287,"visible":true,"origin":"","legend":"","description":"","filename":"paper.pdf","url":"https://assets-eu.researchsquare.com/files/rs-8947226/v1_covered_9436a1ef-71ff-4241-8203-da5dcb55dc89.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"A Wide-Voltage-Range Input High-Power-Density Three-Phase Grid-Frequency Isolated Inverter","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"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":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"wide voltage input, multiplex technology, carrier phase shift, 3D wound core, double-Fourier analysis, power density","lastPublishedDoi":"10.21203/rs.3.rs-8947226/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-8947226/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eAs shipboard distribution systems keep advancing toward miniaturization, integration, and high efficiency, energy storage components have become an integral part of the distribution system. Three-phase inverters are confronted with challenges including a broad DC input voltage range, stringent AC power quality standards, and the demand for high power density. This study presents a hybrid three-phase dual-stage inverter topology that markedly enhances the equivalent switching frequency via multiphase technology, realizing a five-level phase voltage with a fourfold frequency gain and thus lowering the requirement for LC filters. The adoption of a carrier phase-shifting (CPS) modulation scheme effectively suppresses the output common-mode (CM) voltage, thus significantly reducing the design requirements for EMI filters. Through the application of integrated transformer magnetic circuit technology and a three-dimensional (3D) coiled core structure, the overall size and weight of isolation transformers and filter inductors have been significantly reduced. Moreover, the series connection of the transformer's secondary windings enhances the peak amplitude of the AC output voltage while further improving the utilization efficiency of the DC voltage. 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