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Post rotor-fault operation of a Ferrite Magnet assisted Synchronous Reluctance

Neusüs, Sascha ; Binder, Andreas (2020)
Post rotor-fault operation of a Ferrite Magnet assisted Synchronous Reluctance.
2020 International Conference on Electrical Machines. virtual Conference (23.-26.08.2020)
doi: 10.1109/ICEM49940.2020.9271011
Konferenzveröffentlichung, Bibliographie

Kurzbeschreibung (Abstract)

Ferrite magnet assisted synchronous reluctance motors are prone to demagnetization at high overload torque or electric failures (e.g. sudden short-circuits). A four-pole 11 kWprototype motor was partially irreversibly demagnetized by a three-phase sudden short-circuit test on purpose. Here, the remagnetization process of the demagnetized ferrite magnets by transient inrush currents that occur when the motor is externally driven at rated speed (1500 rpm) and suddenly connected to a sinusoidal grid (400V and 50 Hz) is investigated. Measurement results of the original prototype (I) are compared to the partial demagnetized (II) and the partial re-magnetized (III) ferrite magnet assisted synchronous reluctance motors. At rated load operation (1500 rpm, 70 Nm) the efficiency values (IE4: 93.3%) are slightly reduced from 93.6% (I) to 93.2% (II) and 93.5% (III), while the power factor values are 0.83 (II) and 0.86 (III) compared to 0.88 (I).

Typ des Eintrags: Konferenzveröffentlichung
Erschienen: 2020
Autor(en): Neusüs, Sascha ; Binder, Andreas
Art des Eintrags: Bibliographie
Titel: Post rotor-fault operation of a Ferrite Magnet assisted Synchronous Reluctance
Sprache: Englisch
Publikationsjahr: 1 Dezember 2020
Verlag: IEEE
Buchtitel: Proceedings: 2020 International Conference on Eletrical Machines
Veranstaltungstitel: 2020 International Conference on Electrical Machines
Veranstaltungsort: virtual Conference
Veranstaltungsdatum: 23.-26.08.2020
DOI: 10.1109/ICEM49940.2020.9271011
Kurzbeschreibung (Abstract):

Ferrite magnet assisted synchronous reluctance motors are prone to demagnetization at high overload torque or electric failures (e.g. sudden short-circuits). A four-pole 11 kWprototype motor was partially irreversibly demagnetized by a three-phase sudden short-circuit test on purpose. Here, the remagnetization process of the demagnetized ferrite magnets by transient inrush currents that occur when the motor is externally driven at rated speed (1500 rpm) and suddenly connected to a sinusoidal grid (400V and 50 Hz) is investigated. Measurement results of the original prototype (I) are compared to the partial demagnetized (II) and the partial re-magnetized (III) ferrite magnet assisted synchronous reluctance motors. At rated load operation (1500 rpm, 70 Nm) the efficiency values (IE4: 93.3%) are slightly reduced from 93.6% (I) to 93.2% (II) and 93.5% (III), while the power factor values are 0.83 (II) and 0.86 (III) compared to 0.88 (I).

Fachbereich(e)/-gebiet(e): 18 Fachbereich Elektrotechnik und Informationstechnik
18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Elektrische Energiewandlung > Elektrische Energiewandlung
18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Elektrische Energiewandlung
Hinterlegungsdatum: 07 Nov 2022 11:14
Letzte Änderung: 11 Apr 2023 14:33
PPN: 50675748X
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