An Extendable High Step-Up DC-DC Converter with Dual-Switch CI Topology for PV Applications

An Extendable High Step-Up DC-DC Converter with Dual-Switch CI Topology for PV Applications | 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 An Extendable High Step-Up DC-DC Converter with Dual-Switch CI Topology for PV Applications Abdullah Abdullahpour, Amirreza Bahadori, Hamed Abdi, Seyed Hossein Hosseini, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8902479/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 This article presents a high-step-up DC-DC converter with a coupled inductor (CI) designed for boosting low PV voltage levels to higher DC bus voltages. The proposed topology integrates two-switch boost cells with a coupled inductor structure. The coupled inductor in the proposed converter not only increases the output voltage but also provides an additional degree of freedom for controlling the voltage and current stresses of the switches and can be modularly extended to further enhance the conversion ratio. In addition, an extendable pump capacitor unit (PCU) is incorporated to achieve a very high voltage gain. Based on the charge–discharge behavior of the switched capacitors, the output voltage is further increased without significantly increasing the component count. Owing to the low number of components and the simple structure, the converter features low input current ripple and a high overall voltage gain, making it suitable for high step-up PV applications and interfacing PV modules with DC buses. Although the proposed topology can be extended in two ways, for clarity of analysis, it is initially investigated in its basic (non-extended) form. The proposed topology, boosting operation, key operating waveforms, and control strategy are validated by detailed experimental results. Physical sciences/Energy science and technology Physical sciences/Engineering Coupled Inductor DC-DC converter High voltage gain switched capacitor High step-up 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. 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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-8902479","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":598349174,"identity":"dfe09ce9-3973-4a5e-a510-3158669614f9","order_by":0,"name":"Abdullah Abdullahpour","email":"","orcid":"","institution":"Faculty of Electrical and Computer Engineering, University of Tabriz","correspondingAuthor":false,"prefix":"","firstName":"Abdullah","middleName":"","lastName":"Abdullahpour","suffix":""},{"id":598349177,"identity":"6ca6729a-7b59-4078-864c-fdf51af997b4","order_by":1,"name":"Amirreza 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