{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/81002"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/81002","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Torque -Angle Based Analysis and Control of Induction Machines","abstract":"Volts per hertz control, field-oriented control (FOC), and direct-torque control are the most popular induction motor control methods. One common feature that is shared by these control methods is to regulate the amplitude of the flux in the induction motor. There are numerous techniques to improve the steady-state and dynamic performance by applying more complex algorithms to these controls. My goal is to provide a view of the induction machine and its control from the perspective of torque angle. It will be shown that a torque-angle based control can be linked to traditional control methods such as constant-slip control and maximum torque-per-ampere control and to specific objectives such as optimal efficiency or power-factor control, etc. It is possible to use torque angle as a control variable or set it as a constant in order to achieve a simplified control of an induction motor. The dynamic performance of such control is comparable to that of indirect FOC. A controller based on torque angle would be a good alternative to fixed-flux-level controllers in this energy-craving era.","abstract_html":"Volts per hertz control, field-oriented control (FOC), and direct-torque control are the most popular induction motor control methods. One common feature that is shared by these control methods is to regulate the amplitude of the flux in the induction motor. There are numerous techniques to improve the steady-state and dynamic performance by applying more complex algorithms to these controls. My goal is to provide a view of the induction machine and its control from the perspective of torque angle. It will be shown that a torque-angle based control can be linked to traditional control methods such as constant-slip control and maximum torque-per-ampere control and to specific objectives such as optimal efficiency or power-factor control, etc. It is possible to use torque angle as a control variable or set it as a constant in order to achieve a simplified control of an induction motor. The dynamic performance of such control is comparable to that of indirect FOC. A controller based on torque angle would be a good alternative to fixed-flux-level controllers in this energy-craving era.","abstract_has_math":false,"creators":["Zhang, Guoliang"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical and Computer Engineering","degree_department":null,"school":null,"contributors":["Krein, Philip T."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-25T20:09:10Z","date_published":"2015-09-25T20:09:10Z","updated_at":"2026-07-22T22:26:15Z","subjects":["Engineering, Electronics and Electrical"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI3250355"],"render_values":[{"text":"(MiAaPQ)AAI3250355","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/81002","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Krein, Philip T."]},{"key":"dc:creator","label":"Author","values":["Zhang, Guoliang"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-25T20:09:10Z","10000-01-01","2006"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical and Computer Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"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":["Engineering, Electronics and Electrical"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/81002","(MiAaPQ)AAI3250355"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Volts per hertz control, field-oriented control (FOC), and direct-torque control are the most popular induction motor control methods. One common feature that is shared by these control methods is to regulate the amplitude of the flux in the induction motor. There are numerous techniques to improve the steady-state and dynamic performance by applying more complex algorithms to these controls. My goal is to provide a view of the induction machine and its control from the perspective of torque angle. It will be shown that a torque-angle based control can be linked to traditional control methods such as constant-slip control and maximum torque-per-ampere control and to specific objectives such as optimal efficiency or power-factor control, etc. It is possible to use torque angle as a control variable or set it as a constant in order to achieve a simplified control of an induction motor. The dynamic performance of such control is comparable to that of indirect FOC. A controller based on torque angle would be a good alternative to fixed-flux-level controllers in this energy-craving era.","Made available in DSpace on 2015-09-25T20:09:10Z (GMT). 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One common feature that is shared by these control methods is to regulate the amplitude of the flux in the induction motor. There are numerous techniques to improve the steady-state and dynamic performance by applying more complex algorithms to these controls. My goal is to provide a view of the induction machine and its control from the perspective of torque angle. It will be shown that a torque-angle based control can be linked to traditional control methods such as constant-slip control and maximum torque-per-ampere control and to specific objectives such as optimal efficiency or power-factor control, etc. It is possible to use torque angle as a control variable or set it as a constant in order to achieve a simplified control of an induction motor. The dynamic performance of such control is comparable to that of indirect FOC. A controller based on torque angle would be a good alternative to fixed-flux-level controllers in this energy-craving era.","Made available in DSpace on 2015-09-25T20:09:10Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3250355.pdf: 3287497 bytes, checksum: ad3b1116f4f13133e76e9c7d67664f3b (MD5) Previous issue date: 2006","Embargo set by: Seth Robbins for item 82284 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","155 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006."],"dc:identifier":["http://hdl.handle.net/2142/81002","(MiAaPQ)AAI3250355"],"dc:language":["eng"],"dc:subject":["Engineering, Electronics and Electrical"],"dc:title":["Torque -Angle Based Analysis and Control of Induction Machines"],"dc:type":["text"],"thesis:degree_discipline":["Electrical and Computer Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:15Z"}