Power Loss Regulation Based on Capacitor Voltage Shift Control under Centralized Control for MMCs

Power Loss Regulation Based on Capacitor Voltage Shift Control under Centralized Control for MMCs | 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 Power Loss Regulation Based on Capacitor Voltage Shift Control under Centralized Control for MMCs Chang Liu, Jifeng Zhao This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6716836/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 In modular multilevel converters (MMCs), controlling energy losses in submodules (SMs) power electronics is a key consideration for operational reliability. During normal execution, variations in observable power losses can occur between SMs within the arm, primarily caused by factors such as component aging in power electronics and inconsistencies in module parameter matching, etc. This study introduces a DC voltage shift control-based approach (DVSC-PLR) for regulating power losses. By implementing centralized control in MMCs, the equalization of power losses among SMs can be ensured by making adjustments to the mean capacitor voltage to keep it at a constant value. The proposed DVSC-PLR method successfully ensures balanced power dissipation among all SMs within the MMC arm, thereby improving MMC reliability in centralized control schemes. For validation, this study employs time-domain simulations performed in the specialized software PSCAD/EMTDC. The research results obtained confirm the actual validity of the control tactics. modular multilevel converter energy loss regulation centralized control average submodule capacitance voltage 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. 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. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-6716836","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":484963371,"identity":"9f6ecd8b-b6c5-46e5-8856-58395cc24fd2","order_by":0,"name":"Chang Liu","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABA0lEQVRIiWNgGAWjYDAC9vbDDxIMJOTY2BvA/AQQIYFXC8+ZNIMPBRbG/DwHGBuI0yKRYCA540NF4swZCURqkW9ISDDmMZBI3HDz+fPHPAx2eQYHmA/eBjFwaWFsOHjgMVCL8YbbOYbNPAzJxQYH2JKtQQxcWpgZG8C2yAK1MAK1MCduOMBjJs3DcCCxAYcWNmYGA2mgFsYNN48/BGqpB2rh/4ZXCw8bA9D7BhKKM2cwgBx2GGQLG14tEjw8wEAG+oWfJ8dw5hyD44kzD7MZW84xSMapRX7+c2BU/qkDRuXxBx/eVFQn9h1vfnjjTYUdTi1owAAUIjDGKBgFo2AUjAKyAQBmTVXCo1KBXwAAAABJRU5ErkJggg==","orcid":"","institution":"Anhui University","correspondingAuthor":true,"prefix":"","firstName":"Chang","middleName":"","lastName":"Liu","suffix":""},{"id":484963372,"identity":"cede9a59-5dbe-446b-8463-57932c446c1c","order_by":1,"name":"Jifeng Zhao","email":"","orcid":"","institution":"Anhui University","correspondingAuthor":false,"prefix":"","firstName":"Jifeng","middleName":"","lastName":"Zhao","suffix":""}],"badges":[],"createdAt":"2025-05-21 13:08:20","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6716836/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6716836/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":92640485,"identity":"cf5e099b-b13b-41c3-8a53-09382448716d","added_by":"auto","created_at":"2025-10-02 08:02:08","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1665231,"visible":true,"origin":"","legend":"","description":"","filename":"PowerLossRegulationBasedonCapacitorVoltageShiftControlunderCentralizedControlforMMCs.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6716836/v1_covered_c08a25e8-0465-4918-806e-7f033b9b4827.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Power Loss Regulation Based on Capacitor Voltage Shift Control under Centralized Control for MMCs","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":"modular multilevel converter, energy loss regulation, centralized control, average submodule capacitance voltage","lastPublishedDoi":"10.21203/rs.3.rs-6716836/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6716836/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn modular multilevel converters (MMCs), controlling energy losses in submodules (SMs) power electronics is a key consideration for operational reliability. 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