Deusinger, Björn (2021):
Indirect Efficiency Determination and Parameter Identification of Permanent-Magnet Synchronous Machines. (Publisher's Version)
Darmstadt, Technische Universität Darmstadt,
DOI: 10.26083/tuprints-00018915,
[Ph.D. Thesis]
Abstract
This thesis presents a method for efficiency determination of inverter-fed permanent-magnet synchronous machines by summation of the individual losses. For electrically excited synchronous machines there are already standardized methods, as for high efficiency values the direct procedure of input/output measurement is too inaccurate. With the novel method for machines in the base speed range, the individual losses are determined at the no-load experiment and the removed rotor test and recalculated for rated operation. The prerequisites and the analysis of the experiments are described. To evaluate the procedure, measurement series are performed on five different permanent-magnet synchronous machines with a rated power of 45 kW ... 160 kW. The indirect efficiency is compared with a direct measurement. Also for four of the five test machines finite element simulations are carried out to prove the assumptions of the proposed method. The result is, that for four of the test machines a good accordance with deviations below 0.5 % at rated operation conditions is reached. But because of the special design of the fifth test machine the losses and thus the efficiency show deviations of about 1 %. In total, the indirect procedure is usable as an adequate replacement for typical kinds of permanent-magnet synchronous machines with distributed windings and especially for big rated powers, where the direct method is too imprecise. In addition to the efficiency determination the thesis also shows, how to determine the no-load voltage, the short-circuit current, and the synchronous inductance by using the described experiments.
Item Type: | Ph.D. Thesis | ||||
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Erschienen: | 2021 | ||||
Creators: | Deusinger, Björn | ||||
Status: | Publisher's Version | ||||
Title: | Indirect Efficiency Determination and Parameter Identification of Permanent-Magnet Synchronous Machines | ||||
Language: | English | ||||
Abstract: | This thesis presents a method for efficiency determination of inverter-fed permanent-magnet synchronous machines by summation of the individual losses. For electrically excited synchronous machines there are already standardized methods, as for high efficiency values the direct procedure of input/output measurement is too inaccurate. With the novel method for machines in the base speed range, the individual losses are determined at the no-load experiment and the removed rotor test and recalculated for rated operation. The prerequisites and the analysis of the experiments are described. To evaluate the procedure, measurement series are performed on five different permanent-magnet synchronous machines with a rated power of 45 kW ... 160 kW. The indirect efficiency is compared with a direct measurement. Also for four of the five test machines finite element simulations are carried out to prove the assumptions of the proposed method. The result is, that for four of the test machines a good accordance with deviations below 0.5 % at rated operation conditions is reached. But because of the special design of the fifth test machine the losses and thus the efficiency show deviations of about 1 %. In total, the indirect procedure is usable as an adequate replacement for typical kinds of permanent-magnet synchronous machines with distributed windings and especially for big rated powers, where the direct method is too imprecise. In addition to the efficiency determination the thesis also shows, how to determine the no-load voltage, the short-circuit current, and the synchronous inductance by using the described experiments. |
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Place of Publication: | Darmstadt | ||||
Collation: | xiii, 207 Seiten | ||||
Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Electrical Energy Conversion |
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Date Deposited: | 29 Jun 2021 13:35 | ||||
DOI: | 10.26083/tuprints-00018915 | ||||
URL / URN: | https://tuprints.ulb.tu-darmstadt.de/18915 | ||||
URN: | urn:nbn:de:tuda-tuprints-189155 | ||||
PPN: | |||||
Referees: | Binder, Prof. Dr. Andreas ; Doppelbauer, Prof. Dr. Martin | ||||
Refereed / Verteidigung / mdl. Prüfung: | 9 November 2020 | ||||
Alternative Abstract: |
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