{"id":{"repo_id":"mit","oai_identifier":"oai:dspace.mit.edu:1721.1/122735"},"canonical_url":"https://search.dev.ndltd.org/etd/mit/oai:dspace.mit.edu:1721.1/122735","repository":{"repo_id":"mit","name":"MIT","base_url":"https://dspace.mit.edu/oai/request"},"display":{"title":"Enabling miniaturized grid-interface power conversion","abstract":"Many of the most critical challenges of the twenty-first century revolve around energy and its management. Improved performance (efficiency, density) in electrical energy management systems require advancements in a number of areas - semiconductor devices, passive energy storage components, and a variety of circuit- and system-level concerns. The sections of this thesis are somewhat distinct and may find application in a great variety of circumstances. Nevertheless, they can be understood as contributions to a single application system: a grid-interface power converter. These kinds of converters have several unique aspects that make them good targets for research, including a heavy reliance on magnetic components, relatively high voltages for application of emerging GaN transistors, wide range of operating voltages and powers, and a twice-line-frequency energy storage component that is difficult to miniaturize. This thesis will present a high-frequency inductor structure with greatly improved density, an exploration of the limits of magnetic-based current sensing, a method for characterizing GaN losses with large-signal excitations, a control approach for miniaturizing grid-interface energy buffers, and a grid-interface circuit with several advantages over the state of the art.","abstract_html":"Many of the most critical challenges of the twenty-first century revolve around energy and its management. Improved performance (efficiency, density) in electrical energy management systems require advancements in a number of areas - semiconductor devices, passive energy storage components, and a variety of circuit- and system-level concerns. The sections of this thesis are somewhat distinct and may find application in a great variety of circumstances. Nevertheless, they can be understood as contributions to a single application system: a grid-interface power converter. These kinds of converters have several unique aspects that make them good targets for research, including a heavy reliance on magnetic components, relatively high voltages for application of emerging GaN transistors, wide range of operating voltages and powers, and a twice-line-frequency energy storage component that is difficult to miniaturize. This thesis will present a high-frequency inductor structure with greatly improved density, an exploration of the limits of magnetic-based current sensing, a method for characterizing GaN losses with large-signal excitations, a control approach for miniaturizing grid-interface energy buffers, and a grid-interface circuit with several advantages over the state of the art.","abstract_has_math":false,"creators":["Hanson, Alex J.(Alex Jordan)"],"institution":"Massachusetts Institute of Technology","degree_name":"Doctoral","degree_level":null,"degree_discipline":null,"degree_department":"Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science","school":null,"contributors":[],"advisors":["David J. Perreault."],"committee_chairs":[],"committee_members":[],"year":2019,"date_issued":"2019","date_published":"2019","updated_at":"2026-07-22T22:21:54Z","subjects":["Electrical Engineering and Computer Science."],"languages":["eng"],"rights":["MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission."],"rights_urls":["http://dspace.mit.edu/handle/1721.1/7582"],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/1721.1/122735","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["David J. Perreault."]},{"key":"dc:contributor.department","label":"Department","values":["Massachusetts Institute of Technology. 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