{"id":{"repo_id":"uoit","oai_identifier":"oai:ontariotechu.scholaris.ca:10155/1916"},"canonical_url":"https://search.dev.ndltd.org/etd/uoit/oai:ontariotechu.scholaris.ca:10155/1916","repository":{"repo_id":"uoit","name":"Ontario Institute of Technology","base_url":"https://ontariotechu.scholaris.ca/server/oai/request"},"display":{"title":"Reconfigurable multiport solid-state transformer for DC fast charging stations","abstract":"This thesis presents a Solid-State Transformer (SST)-based Electric Vehicle (EV) fast charging station that enhances reliability and optimizes power distribution. Traditional SST-based stations rely on a shared DC bus, susceptible to faults that disrupt the entire system. The proposed system introduces multiple independent DC buses, isolating faults and improving reliability while eliminating the need for additional DC-DC converters, reducing costs and space. Reconfigurable ports deliver 800V, 400V, and 200V, accommodating heavy, medium, and light EVs. A dynamic reconfiguration algorithm adjusts the ports based on vehicle requirements. MATLAB/Simulink simulations confirm stable charging currents and voltages under varying loads. A scaled-down prototype achieves an efficiency of 93.75%, with experimental results showing light EVs charged at 1.25A/50V and heavy EVs at 2.5A/100V, with an 8.2% voltage ripple. Grid current THD remains below 5%, meeting IEEE 519-2022 standards. The system enhances EV fast charging stations' reliability, efficiency, and cost-effectiveness.","abstract_html":"This thesis presents a Solid-State Transformer (SST)-based Electric Vehicle (EV) fast charging station that enhances reliability and optimizes power distribution. Traditional SST-based stations rely on a shared DC bus, susceptible to faults that disrupt the entire system. The proposed system introduces multiple independent DC buses, isolating faults and improving reliability while eliminating the need for additional DC-DC converters, reducing costs and space. Reconfigurable ports deliver 800V, 400V, and 200V, accommodating heavy, medium, and light EVs. A dynamic reconfiguration algorithm adjusts the ports based on vehicle requirements. MATLAB/Simulink simulations confirm stable charging currents and voltages under varying loads. A scaled-down prototype achieves an efficiency of 93.75%, with experimental results showing light EVs charged at 1.25A/50V and heavy EVs at 2.5A/100V, with an 8.2% voltage ripple. Grid current THD remains below 5%, meeting IEEE 519-2022 standards. The system enhances EV fast charging stations' reliability, efficiency, and cost-effectiveness.","abstract_has_math":false,"creators":["Edirisooriya Mohottige, Ruvini Wathsala De Seram"],"institution":"University of Ontario Institute of Technology","degree_name":"Master of Applied Science (MASc)","degree_level":null,"degree_discipline":"Electrical and Computer Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Williamson, Sheldon"],"committee_chairs":[],"committee_members":[],"year":2025,"date_issued":"2025-03-01","date_published":"2025-03-01","updated_at":"2026-07-24T05:35:32Z","subjects":[],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/10155/1916","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Williamson, Sheldon"]},{"key":"dc:creator","label":"Author","values":["Edirisooriya Mohottige, Ruvini Wathsala De Seram"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-04-01T18:29:53Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2025-04-01T18:29:53Z"]},{"key":"dc:date.issued","label":"Date","values":["2025-03-01"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical and Computer Engineering"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Applied Science (MASc)"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Ontario Institute of Technology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/10155/1916"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This thesis presents a Solid-State Transformer (SST)-based Electric Vehicle (EV) fast charging station that enhances reliability and optimizes power distribution. Traditional SST-based stations rely on a shared DC bus, susceptible to faults that disrupt the entire system. The proposed system introduces multiple independent DC buses, isolating faults and improving reliability while eliminating the need for additional DC-DC converters, reducing costs and space. Reconfigurable ports deliver 800V, 400V, and 200V, accommodating heavy, medium, and light EVs. A dynamic reconfiguration algorithm adjusts the ports based on vehicle requirements. MATLAB/Simulink simulations confirm stable charging currents and voltages under varying loads. A scaled-down prototype achieves an efficiency of 93.75%, with experimental results showing light EVs charged at 1.25A/50V and heavy EVs at 2.5A/100V, with an 8.2% voltage ripple. Grid current THD remains below 5%, meeting IEEE 519-2022 standards. The system enhances EV fast charging stations' reliability, efficiency, and cost-effectiveness."]},{"key":"dc:title","label":"Title","values":["Reconfigurable multiport solid-state transformer for DC fast charging stations"]}]}],"canonical_facts":{"dc:contributor.advisor":["Williamson, Sheldon"],"dc:creator":["Edirisooriya Mohottige, Ruvini Wathsala De Seram"],"dc:date.accessioned":["2025-04-01T18:29:53Z"],"dc:date.available":["2025-04-01T18:29:53Z"],"dc:date.issued":["2025-03-01"],"dc:description.abstract":["This thesis presents a Solid-State Transformer (SST)-based Electric Vehicle (EV) fast charging station that enhances reliability and optimizes power distribution. Traditional SST-based stations rely on a shared DC bus, susceptible to faults that disrupt the entire system. The proposed system introduces multiple independent DC buses, isolating faults and improving reliability while eliminating the need for additional DC-DC converters, reducing costs and space. Reconfigurable ports deliver 800V, 400V, and 200V, accommodating heavy, medium, and light EVs. A dynamic reconfiguration algorithm adjusts the ports based on vehicle requirements. MATLAB/Simulink simulations confirm stable charging currents and voltages under varying loads. A scaled-down prototype achieves an efficiency of 93.75%, with experimental results showing light EVs charged at 1.25A/50V and heavy EVs at 2.5A/100V, with an 8.2% voltage ripple. Grid current THD remains below 5%, meeting IEEE 519-2022 standards. The system enhances EV fast charging stations' reliability, efficiency, and cost-effectiveness."],"dc:identifier.uri":["https://hdl.handle.net/10155/1916"],"dc:language.iso":["en"],"dc:title":["Reconfigurable multiport solid-state transformer for DC fast charging stations"],"dc:type":["Thesis"],"thesis:degree_discipline":["Electrical and Computer Engineering"],"thesis:degree_name":["Master of Applied Science (MASc)"],"thesis:institution_name":["University of Ontario Institute of Technology"]},"updated_at":"2026-07-24T05:35:32Z"}