A Stator Turn Fault Detection Method and a Fault-Tolerant Operating Strategy for Interior PM Synchronous Motor Drives in Safety-Critical Applications

dc.contributor.advisor Habetler, Thomas G.
dc.contributor.author Lee, Youngkook en_US
dc.contributor.committeeMember Ayanna M. Howard
dc.contributor.committeeMember Dean J. Patterson
dc.contributor.committeeMember Deepakraj M. Divan
dc.contributor.committeeMember Harley, Ronald G.
dc.contributor.department Electrical and Computer Engineering en_US
dc.date.accessioned 2007-08-16T17:41:56Z
dc.date.available 2007-08-16T17:41:56Z
dc.date.issued 2007-07-02 en_US
dc.description.abstract A stator turn fault in a safety-critical drive application must be detected at its initial stage and imperatively requires an evasive action to prevent a serious accident caused by an abrupt interruption in the drive s operation. However, this is much challenging for the case of an interior permanent magnet synchronous motor (IPMSM) drives because of the presence of the permanent magnets that cannot be turned off at will. This work tackles the problem of increase the stator turn fault tolerance of IPMSM drives in safety-critical applications. This objective is achieved by an on-line turn fault detection method and a simple turn fault-tolerant operating strategy. In this work, it is shown that a stator turn fault in a current-controlled voltage source inverter-driven machine leads to a reduced fundamental positive sequence component of the voltage references as compared to the machine without a turn fault for a given torque reference and rotating speed. Based on this finding, a voltage reference-based turn fault detection method is proposed. In addition, it is also revealed that an adjustment to the level of the rotating magnetic flux in an appropriate manner can yield a significant reduction in the propagation speed of the fault and possibly prevention of the fault from spreading to the entire winding. This would be accomplished without any hardware modification. Based on this principle, a stator turn fault-tolerant operating strategy for IPMSM drives maintaining drive s availability is proposed. To evaluate these turn fault detection method and fault-tolerant operating strategy, an electrical model and a thermal model of an IPMSM with stator turn faults are derived. All the proposed models and methods are validated through simulations and experiments on a 10kW IPMSM drive. en_US
dc.description.degree Ph.D. en_US
dc.identifier.uri http://hdl.handle.net/1853/16156
dc.publisher Georgia Institute of Technology en_US
dc.subject Stator turn fault en_US
dc.subject Fault-tolerant operating strategy en_US
dc.subject Detection method en_US
dc.subject IPMSM en_US
dc.subject Safety-critical application en_US
dc.title A Stator Turn Fault Detection Method and a Fault-Tolerant Operating Strategy for Interior PM Synchronous Motor Drives in Safety-Critical Applications en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Habetler, Thomas G.
local.contributor.corporatename School of Electrical and Computer Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 36c5ceca-e31b-42c3-a57a-77e1400ffb5f
relation.isOrgUnitOfPublication 5b7adef2-447c-4270-b9fc-846bd76f80f2
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
6.11 MB
Adobe Portable Document Format