{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/101498"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/101498","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Electromagnetic fault analysis for high specific power permanent magnet synchronous machine","abstract":"This thesis discusses the electromagnetic fault analyses for a high specific power 1 MW permanent magnet synchronous electric machine designed for aerospace applications. As the high specific power of 13.3 kW/kg of the machine is to be achieved by pushing the design parameters such as mechanical speed, electric current, and temperature, the importance of permanent magnet demagnetization and long-term insulation quality is stressed. Demagnetization will be quantified using finite element methods, where the effects of permanent magnet material, air gap, and rotor back yoke material on demagnetization will be explored respectively. This is expected to provide insights to the machine designers to select appropriate materials and air gap, topics that have not been yet covered in previous work related with the particular design. Ultimately, this discussion will lead to an electro-thermal trade-off problem since permanent magnets are highly sensitive to temperature. Secondly, this thesis discusses the insulation aging to determine the longevity of the design. Various aging models therefore will be introduced to provide an analytical basis to project the insulation lifetime on real applications. A preliminary aging experimental setup is presented, along with a partial discharge detection setup since partial discharges are suspected to be one of the main electrical aging mechanisms. Ultimately, the data obtained from the experiments must be fitted into the aging models. This thesis will present early experimental results.","abstract_html":"This thesis discusses the electromagnetic fault analyses for a high specific power 1 MW permanent magnet synchronous electric machine designed for aerospace applications. As the high specific power of 13.3 kW/kg of the machine is to be achieved by pushing the design parameters such as mechanical speed, electric current, and temperature, the importance of permanent magnet demagnetization and long-term insulation quality is stressed. Demagnetization will be quantified using finite element methods, where the effects of permanent magnet material, air gap, and rotor back yoke material on demagnetization will be explored respectively. This is expected to provide insights to the machine designers to select appropriate materials and air gap, topics that have not been yet covered in previous work related with the particular design. Ultimately, this discussion will lead to an electro-thermal trade-off problem since permanent magnets are highly sensitive to temperature. Secondly, this thesis discusses the insulation aging to determine the longevity of the design. Various aging models therefore will be introduced to provide an analytical basis to project the insulation lifetime on real applications. A preliminary aging experimental setup is presented, along with a partial discharge detection setup since partial discharges are suspected to be one of the main electrical aging mechanisms. Ultimately, the data obtained from the experiments must be fitted into the aging models. This thesis will present early experimental results.","abstract_has_math":false,"creators":["Jin, Austin"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Haran, Kiruba S."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018-09-27T16:17:29Z","date_published":"2018-09-27T16:17:29Z","updated_at":"2026-07-22T22:24:40Z","subjects":["PMSM","demagnetization","insulation","insulation aging","electric machines","aerospace"],"languages":["en"],"rights":["Copyright 2018 Austin Jin"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/101498","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Haran, Kiruba S."]},{"key":"dc:creator","label":"Author","values":["Jin, Austin"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2018-09-27T16:17:29Z","2018-06-20","2018-08"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["PMSM","demagnetization","insulation","insulation aging","electric machines","aerospace"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2018 Austin Jin"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/101498"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This thesis discusses the electromagnetic fault analyses for a high specific power 1 MW permanent magnet synchronous electric machine designed for aerospace applications. As the high specific power of 13.3 kW/kg of the machine is to be achieved by pushing the design parameters such as mechanical speed, electric current, and temperature, the importance of permanent magnet demagnetization and long-term insulation quality is stressed. Demagnetization will be quantified using finite element methods, where the effects of permanent magnet material, air gap, and rotor back yoke material on demagnetization will be explored respectively. This is expected to provide insights to the machine designers to select appropriate materials and air gap, topics that have not been yet covered in previous work related with the particular design. Ultimately, this discussion will lead to an electro-thermal trade-off problem since permanent magnets are highly sensitive to temperature. Secondly, this thesis discusses the insulation aging to determine the longevity of the design. Various aging models therefore will be introduced to provide an analytical basis to project the insulation lifetime on real applications. A preliminary aging experimental setup is presented, along with a partial discharge detection setup since partial discharges are suspected to be one of the main electrical aging mechanisms. Ultimately, the data obtained from the experiments must be fitted into the aging models. This thesis will present early experimental results.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-09-27 without embargo terms","The student, Austin Jin, accepted the attached license on 2018-06-19 at 16:12.","The student, Austin Jin, submitted this Thesis for approval on 2018-06-19 at 16:20.","This Thesis was approved for publication on 2018-06-20 at 16:02.","DSpace SAF Submission Ingestion Package generated from Vireo submission #12647 on 2018-09-27 at 10:45:05","Made available in DSpace on 2018-09-27T16:17:29Z (GMT). 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As the high specific power of 13.3 kW/kg of the machine is to be achieved by pushing the design parameters such as mechanical speed, electric current, and temperature, the importance of permanent magnet demagnetization and long-term insulation quality is stressed. Demagnetization will be quantified using finite element methods, where the effects of permanent magnet material, air gap, and rotor back yoke material on demagnetization will be explored respectively. This is expected to provide insights to the machine designers to select appropriate materials and air gap, topics that have not been yet covered in previous work related with the particular design. Ultimately, this discussion will lead to an electro-thermal trade-off problem since permanent magnets are highly sensitive to temperature. Secondly, this thesis discusses the insulation aging to determine the longevity of the design. Various aging models therefore will be introduced to provide an analytical basis to project the insulation lifetime on real applications. A preliminary aging experimental setup is presented, along with a partial discharge detection setup since partial discharges are suspected to be one of the main electrical aging mechanisms. Ultimately, the data obtained from the experiments must be fitted into the aging models. This thesis will present early experimental results.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-09-27 without embargo terms","The student, Austin Jin, accepted the attached license on 2018-06-19 at 16:12.","The student, Austin Jin, submitted this Thesis for approval on 2018-06-19 at 16:20.","This Thesis was approved for publication on 2018-06-20 at 16:02.","DSpace SAF Submission Ingestion Package generated from Vireo submission #12647 on 2018-09-27 at 10:45:05","Made available in DSpace on 2018-09-27T16:17:29Z (GMT). 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