2026-09-20T20:48:20Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/49551 2023-07-11 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Domínguez-García, Alejandro D. Zholbaryssov, Madi 2014-05-30T16:49:33Z 2014-05-30T16:49:33Z 2014-05 2014-05-30T16:49:33Z 2014-05 This thesis proposes a fault detection and isolation (FDI) method for switched linear systems. The method builds on a class of FDI filters for linear time-invariant (LTI) systems based on reduced-order observers. If certain conditions are satisfied, then it is possible to apply these filters to switched linear systems. When system parameters change slowly, a system is considered to be in a faulty mode. In the absence of faults, the system dynamics are described by a switched linear state space model. In a faulty mode, the state space model is modified by adding disturbance terms associated with parameter changes and component degradations. An FDI filter consists of a bank of reduced-order observers with residual generators which have certain geometric properties that allow detecting and isolating faults. In order to distinguish different faults, an FDI filter uses different residual generators and observers. We demonstrate practical feasibility of our approach by applying it to a photovoltaic (PV) system with differential power processing (DPP) converters. Our simulation results confirmed the fact that an FDI filter can detect and pinpoint multiple faults which can simultaneously affect a system. Finally, we experimentally demonstrate the feasibility of our approach. Item withdrawn by Laura Spradlin (lspradl2@illinois.edu) on 2014-04-29T14:11:23Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Zholbaryssov_Madi.pdf: 5459261 bytes, checksum: 14500e7c7522917d7bc6655d1c07cc72 (MD5) Made available in DSpace on 2014-05-30T16:49:33Z (GMT). No. of bitstreams: 2 Madi_Zholbaryssov.pdf: 5459261 bytes, checksum: 14500e7c7522917d7bc6655d1c07cc72 (MD5) license.txt: 4067 bytes, checksum: fc06d6a40c6f0e74fcaced0b88a86233 (MD5) http://hdl.handle.net/2142/49551 en Copyright 2014 Madi Zholbaryssov Fault detection and isolation reduced-order observers switched linear systems photovoltaic systems differential power processing converters Fault detection and isolation in switched linear systems and applications text Electrical & Computer Eng 1933 Electrical & Computer Engr 1200 University of Illinois at Urbana-Champaign Thesis M.S. MS:Electr & Computer Eng-UIUC 10KS1200MS