Observer-based fault detection and isolation for motor drive inverters
Delhotal, Jarod
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https://hdl.handle.net/2142/29679
Description
Title
Observer-based fault detection and isolation for motor drive inverters
Author(s)
Delhotal, Jarod
Issue Date
2012-02-06T20:10:36Z
Director of Research (if dissertation) or Advisor (if thesis)
Domínguez-García, Alejandro D.
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
fault detection
Isolation
power electronics
inverter
motor drive
electric vehicle
Abstract
Abstract Observer-based methods can be used for fault detection and isolation for switched linear systems. A state observer is constructed based on the physical system. Changes in the observer error are monitored to detect specific types of faults. This thesis uses the mathematical basis to offer a generic format that can be applied to any linear or switched-linear system. These methods are then applied to a motor drive system, particularly the DC-AC converter, in order to quickly detect parameter changes, sensor faults, and switch faults. Simulations demonstrate that these methods could be used to detect several different fault types. However, the number of distinct fault types that can be distinguished is limited by the number of states of the system.
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