{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/99341"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/99341","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Insulation considerations and qualifications for form-wound air-core armature windings in high-frequency electrical machines","abstract":"High specific power electrical machines are a key enabling technology in hybrid electric aircraft. Specific power can be increased by increasing the machine's electrical loading and operating frequency, which often increases the machine's operating temperature and requires a strong insulation scheme. This thesis will explore the insulation scheme implemented in a high specific power permanent magnet synchronous machine currently being developed by the Haran Research Group. The insulation, initially developed by other members of the group, will first be summarized. The machine and drive system will then be examined in a system context to determine the possibility of voltage overshoot at the motor terminals caused by a variable frequency drive along a transmission line. Based on simulation results, recommendations for future work in the insulation system are made. The remainder of the thesis will focus on developing a test plan for the existing insulation scheme through the use of dc hipot testing and impulse winding testing. The work concludes by appointing successors to continue winding validation and begin an exploration of accelerated aging behavior in the author's absence. Appendices provide a step-by-step guide to the impulse winding test and printed circuit board designs with photographs of windings under test.","abstract_html":"High specific power electrical machines are a key enabling technology in hybrid electric aircraft. Specific power can be increased by increasing the machine's electrical loading and operating frequency, which often increases the machine's operating temperature and requires a strong insulation scheme. This thesis will explore the insulation scheme implemented in a high specific power permanent magnet synchronous machine currently being developed by the Haran Research Group. The insulation, initially developed by other members of the group, will first be summarized. The machine and drive system will then be examined in a system context to determine the possibility of voltage overshoot at the motor terminals caused by a variable frequency drive along a transmission line. Based on simulation results, recommendations for future work in the insulation system are made. The remainder of the thesis will focus on developing a test plan for the existing insulation scheme through the use of dc hipot testing and impulse winding testing. The work concludes by appointing successors to continue winding validation and begin an exploration of accelerated aging behavior in the author's absence. Appendices provide a step-by-step guide to the impulse winding test and printed circuit board designs with photographs of windings under test.","abstract_has_math":false,"creators":["Lenz, Jackson David"],"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 Sivasubramaniam"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018-03-13T15:48:41Z","date_published":"2018-03-13T15:48:41Z","updated_at":"2026-07-22T22:24:37Z","subjects":["Insulation","Permanent magnet synchronous machine (PMSM)"],"languages":["en"],"rights":["Copyright 2017 Jackson Lenz"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/99341","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Haran, Kiruba Sivasubramaniam"]},{"key":"dc:creator","label":"Author","values":["Lenz, Jackson David"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2018-03-13T15:48:41Z","2017-11-29","2017-12"]},{"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":["Insulation","Permanent magnet synchronous machine (PMSM)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2017 Jackson Lenz"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/99341"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["High specific power electrical machines are a key enabling technology in hybrid electric aircraft. Specific power can be increased by increasing the machine's electrical loading and operating frequency, which often increases the machine's operating temperature and requires a strong insulation scheme. This thesis will explore the insulation scheme implemented in a high specific power permanent magnet synchronous machine currently being developed by the Haran Research Group. The insulation, initially developed by other members of the group, will first be summarized. The machine and drive system will then be examined in a system context to determine the possibility of voltage overshoot at the motor terminals caused by a variable frequency drive along a transmission line. Based on simulation results, recommendations for future work in the insulation system are made. The remainder of the thesis will focus on developing a test plan for the existing insulation scheme through the use of dc hipot testing and impulse winding testing. The work concludes by appointing successors to continue winding validation and begin an exploration of accelerated aging behavior in the author's absence. Appendices provide a step-by-step guide to the impulse winding test and printed circuit board designs with photographs of windings under test.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-03-13 without embargo terms","The student, Jackson Lenz, accepted the attached license on 2017-11-28 at 17:25.","The student, Jackson Lenz, submitted this Thesis for approval on 2017-11-28 at 17:37.","This Thesis was approved for publication on 2017-11-29 at 09:41.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11773 on 2018-03-13 at 10:09:20","Made available in DSpace on 2018-03-13T15:48:41Z (GMT). No. of bitstreams: 2 LENZ-THESIS-2017.pdf: 13546260 bytes, checksum: aa125d813d7209ebee979dfa668a77aa (MD5) LICENSE.txt: 4209 bytes, checksum: e7518a17897638bdaac5e906c31633ea (MD5) Previous issue date: 2017-11-29"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Insulation considerations and qualifications for form-wound air-core armature windings in high-frequency electrical machines"]}]}],"canonical_facts":{"dc:contributor":["Haran, Kiruba Sivasubramaniam"],"dc:creator":["Lenz, Jackson David"],"dc:date":["2018-03-13T15:48:41Z","2017-11-29","2017-12"],"dc:description":["High specific power electrical machines are a key enabling technology in hybrid electric aircraft. Specific power can be increased by increasing the machine's electrical loading and operating frequency, which often increases the machine's operating temperature and requires a strong insulation scheme. This thesis will explore the insulation scheme implemented in a high specific power permanent magnet synchronous machine currently being developed by the Haran Research Group. The insulation, initially developed by other members of the group, will first be summarized. The machine and drive system will then be examined in a system context to determine the possibility of voltage overshoot at the motor terminals caused by a variable frequency drive along a transmission line. Based on simulation results, recommendations for future work in the insulation system are made. The remainder of the thesis will focus on developing a test plan for the existing insulation scheme through the use of dc hipot testing and impulse winding testing. The work concludes by appointing successors to continue winding validation and begin an exploration of accelerated aging behavior in the author's absence. Appendices provide a step-by-step guide to the impulse winding test and printed circuit board designs with photographs of windings under test.","Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-03-13 without embargo terms","The student, Jackson Lenz, accepted the attached license on 2017-11-28 at 17:25.","The student, Jackson Lenz, submitted this Thesis for approval on 2017-11-28 at 17:37.","This Thesis was approved for publication on 2017-11-29 at 09:41.","DSpace SAF Submission Ingestion Package generated from Vireo submission #11773 on 2018-03-13 at 10:09:20","Made available in DSpace on 2018-03-13T15:48:41Z (GMT). No. of bitstreams: 2 LENZ-THESIS-2017.pdf: 13546260 bytes, checksum: aa125d813d7209ebee979dfa668a77aa (MD5) LICENSE.txt: 4209 bytes, checksum: e7518a17897638bdaac5e906c31633ea (MD5) Previous issue date: 2017-11-29"],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/99341"],"dc:language":["en"],"dc:rights":["Copyright 2017 Jackson Lenz"],"dc:subject":["Insulation","Permanent magnet synchronous machine (PMSM)"],"dc:title":["Insulation considerations and qualifications for form-wound air-core armature windings in high-frequency electrical machines"],"dc:type":["text"],"thesis:degree_discipline":["Electrical & Computer Engr"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:37Z"}