Pagel, Michael (2018)
Model-based diagnosis of electric cooling fan drive systems.
Technische Universität Darmstadt
Ph.D. Thesis, Primary publication
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Item Type: | Ph.D. Thesis | ||||
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Type of entry: | Primary publication | ||||
Title: | Model-based diagnosis of electric cooling fan drive systems | ||||
Language: | English | ||||
Referees: | Isermann, Prof. Dr. Rolf ; Binder, Prof. Dr. Andreas | ||||
Date: | 2018 | ||||
Place of Publication: | Darmstadt | ||||
Date of oral examination: | 5 December 2017 | ||||
Abstract: | This work is a contribution to the field of fault detection and diagnosis for electrically driven engine cooling fans. Its main focus is on the online gathering and determination of important parameters and internal states. The algorithms are specifically designed in a resource and computing efficient manner to allow for series implementation on microcontrollers usually employed in small electrical drives. Furthermore, the developed methods for fault detection and diagnosis are characterized by a low application effort, drastically reducing the costs for transferring them to other applications. Novel algorithms are presented for determination of the winding resistance, the flux linkage over angle and the equivalent series resistance. Furthermore, a novel approach for determination of the magnet temperature is proposed, utilizing the winding temperature, which is derived from the winding resistance without requiring an additional temperature sensor. A method is presented for detection of a demagnetization event based on the flux linkage over angle. Besides that, detection of an aged DC-link capacitor and of winding faults is demonstrated. Furthermore, a novel approach is presented for detection and diagnosis of unusual load conditions, caused for example, by a blockage or dirt on the fan blade. |
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URN: | urn:nbn:de:tuda-tuprints-80898 | ||||
Classification DDC: | 000 Generalities, computers, information > 000 Generalities 000 Generalities, computers, information > 004 Computer science 500 Science and mathematics > 500 Science 500 Science and mathematics > 510 Mathematics 500 Science and mathematics > 530 Physics 600 Technology, medicine, applied sciences > 600 Technology 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering |
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Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institut für Automatisierungstechnik und Mechatronik |
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Date Deposited: | 21 Nov 2018 14:11 | ||||
Last Modified: | 09 Jul 2020 02:22 | ||||
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/8089 | ||||
PPN: | 439113156 | ||||
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