{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/31937"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/31937","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Observer based fault detection filters for three-phase inverters and statcoms","abstract":"The introduction of power electronics has brought great benefits in terms of size, weight, performance, and feasibility to various electrical systems. However, with increasing penetration of power electronics circuits in safety- and mission-critical systems, the reliability of the power electronics is becoming an issue of increasing concern. To increase the overall reliability of the power electronic circuit, one key area is developing effective mechanisms for fault detection and isolation. While average models have been proposed for fault detection, these average models disregard dynamics at switching frequency, which are sometimes crucial in determining the exact health of power electronic circuit components. This thesis develops and experimentally demonstrates a class of model-based fault detection and isolation filters for three-phase AC-DC power electronics systems that is able to detect all possible component faults, offers fast detection, and has the ability to capture slow degradation in individual components. The structure of these filters is similar to that of a piecewise linear observer, and in the absence of faults, the filter error residual converges to zero. On the other hand, whenever a fault occurs, by appropriately choosing the filter gain, the filter error residual will exhibit certain geometric characteristics that allow the fault to be detected and, in certain cases, also isolated. While the theory developed is general, the analysis, simulations, and experimental demonstration are focused on systems implementing three-phase AC-DC converters used, for example, in drive applications and distributed static compensators.","abstract_html":"The introduction of power electronics has brought great benefits in terms of size, weight, performance, and feasibility to various electrical systems. However, with increasing penetration of power electronics circuits in safety- and mission-critical systems, the reliability of the power electronics is becoming an issue of increasing concern. To increase the overall reliability of the power electronic circuit, one key area is developing effective mechanisms for fault detection and isolation. While average models have been proposed for fault detection, these average models disregard dynamics at switching frequency, which are sometimes crucial in determining the exact health of power electronic circuit components. This thesis develops and experimentally demonstrates a class of model-based fault detection and isolation filters for three-phase AC-DC power electronics systems that is able to detect all possible component faults, offers fast detection, and has the ability to capture slow degradation in individual components. The structure of these filters is similar to that of a piecewise linear observer, and in the absence of faults, the filter error residual converges to zero. On the other hand, whenever a fault occurs, by appropriately choosing the filter gain, the filter error residual will exhibit certain geometric characteristics that allow the fault to be detected and, in certain cases, also isolated. While the theory developed is general, the analysis, simulations, and experimental demonstration are focused on systems implementing three-phase AC-DC converters used, for example, in drive applications and distributed static compensators.","abstract_has_math":false,"creators":["Ding, Xiangyu"],"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":["Domínguez-García, Alejandro D."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-06-27T21:20:19Z","date_published":"2012-06-27T21:20:19Z","updated_at":"2026-07-22T22:25:30Z","subjects":["fault detection and isolation","power electronics","inverters","statcoms"],"languages":["en"],"rights":["Copyright 2012 Xiangyu Ding"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/31937","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Domínguez-García, Alejandro D."]},{"key":"dc:creator","label":"Author","values":["Ding, Xiangyu"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2012-06-27T21:20:19Z","2014-06-28T10:00:20Z","2012-05"]},{"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":["fault detection and isolation","power electronics","inverters","statcoms"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2012 Xiangyu Ding"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/31937"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The introduction of power electronics has brought great benefits in terms of size, weight, performance, and feasibility to various electrical systems. However, with increasing penetration of power electronics circuits in safety- and mission-critical systems, the reliability of the power electronics is becoming an issue of increasing concern. To increase the overall reliability of the power electronic circuit, one key area is developing effective mechanisms for fault detection and isolation. While average models have been proposed for fault detection, these average models disregard dynamics at switching frequency, which are sometimes crucial in determining the exact health of power electronic circuit components. This thesis develops and experimentally demonstrates a class of model-based fault detection and isolation filters for three-phase AC-DC power electronics systems that is able to detect all possible component faults, offers fast detection, and has the ability to capture slow degradation in individual components. The structure of these filters is similar to that of a piecewise linear observer, and in the absence of faults, the filter error residual converges to zero. On the other hand, whenever a fault occurs, by appropriately choosing the filter gain, the filter error residual will exhibit certain geometric characteristics that allow the fault to be detected and, in certain cases, also isolated. While the theory developed is general, the analysis, simulations, and experimental demonstration are focused on systems implementing three-phase AC-DC converters used, for example, in drive applications and distributed static compensators.","Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2012-04-19T14:07:24Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Ding_Xiangyu.pdf: 1998803 bytes, checksum: 8d08f403accaf3fe63d0ebb82791dee2 (MD5)","Made available in DSpace on 2012-06-27T21:20:19Z (GMT). No. of bitstreams: 2 Ding_Xiangyu.pdf: 1998803 bytes, checksum: 8d08f403accaf3fe63d0ebb82791dee2 (MD5) license.txt: 4059 bytes, checksum: a8b6e0070687756b82494751ebd09126 (MD5)","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by William Ingram (wingram2@illinois.edu) on 2012-06-27T21:24:35Z Item is restricted until 2014-06-27T21:24:27Z","Item reinstated by Sarah Shreeves (sshreeve@illinois.edu) on 2014-06-28T10:00:20Z Item was in collections: Dissertations and Theses - Electrical and Computer Engineering (ID: 446) Graduate Theses and Dissertations at Illinois (ID: 204) No. of bitstreams: 2 Ding_Xiangyu.pdf: 1998803 bytes, checksum: 8d08f403accaf3fe63d0ebb82791dee2 (MD5) license.txt: 4059 bytes, checksum: a8b6e0070687756b82494751ebd09126 (MD5)","Item released from any restrictions by Sarah Shreeves (sshreeve@illinois.edu) on 2014-06-28T10:00:20Z"]},{"key":"dc:title","label":"Title","values":["Observer based fault detection filters for three-phase inverters and statcoms"]}]}],"canonical_facts":{"dc:contributor":["Domínguez-García, Alejandro D."],"dc:creator":["Ding, Xiangyu"],"dc:date":["2012-06-27T21:20:19Z","2014-06-28T10:00:20Z","2012-05"],"dc:description":["The introduction of power electronics has brought great benefits in terms of size, weight, performance, and feasibility to various electrical systems. However, with increasing penetration of power electronics circuits in safety- and mission-critical systems, the reliability of the power electronics is becoming an issue of increasing concern. To increase the overall reliability of the power electronic circuit, one key area is developing effective mechanisms for fault detection and isolation. While average models have been proposed for fault detection, these average models disregard dynamics at switching frequency, which are sometimes crucial in determining the exact health of power electronic circuit components. This thesis develops and experimentally demonstrates a class of model-based fault detection and isolation filters for three-phase AC-DC power electronics systems that is able to detect all possible component faults, offers fast detection, and has the ability to capture slow degradation in individual components. The structure of these filters is similar to that of a piecewise linear observer, and in the absence of faults, the filter error residual converges to zero. On the other hand, whenever a fault occurs, by appropriately choosing the filter gain, the filter error residual will exhibit certain geometric characteristics that allow the fault to be detected and, in certain cases, also isolated. While the theory developed is general, the analysis, simulations, and experimental demonstration are focused on systems implementing three-phase AC-DC converters used, for example, in drive applications and distributed static compensators.","Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2012-04-19T14:07:24Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Ding_Xiangyu.pdf: 1998803 bytes, checksum: 8d08f403accaf3fe63d0ebb82791dee2 (MD5)","Made available in DSpace on 2012-06-27T21:20:19Z (GMT). No. of bitstreams: 2 Ding_Xiangyu.pdf: 1998803 bytes, checksum: 8d08f403accaf3fe63d0ebb82791dee2 (MD5) license.txt: 4059 bytes, checksum: a8b6e0070687756b82494751ebd09126 (MD5)","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by William Ingram (wingram2@illinois.edu) on 2012-06-27T21:24:35Z Item is restricted until 2014-06-27T21:24:27Z","Item reinstated by Sarah Shreeves (sshreeve@illinois.edu) on 2014-06-28T10:00:20Z Item was in collections: Dissertations and Theses - Electrical and Computer Engineering (ID: 446) Graduate Theses and Dissertations at Illinois (ID: 204) No. of bitstreams: 2 Ding_Xiangyu.pdf: 1998803 bytes, checksum: 8d08f403accaf3fe63d0ebb82791dee2 (MD5) license.txt: 4059 bytes, checksum: a8b6e0070687756b82494751ebd09126 (MD5)","Item released from any restrictions by Sarah Shreeves (sshreeve@illinois.edu) on 2014-06-28T10:00:20Z"],"dc:identifier":["http://hdl.handle.net/2142/31937"],"dc:language":["en"],"dc:rights":["Copyright 2012 Xiangyu Ding"],"dc:subject":["fault detection and isolation","power electronics","inverters","statcoms"],"dc:title":["Observer based fault detection filters for three-phase inverters and statcoms"],"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":"2026-07-22T22:25:30Z"}