This paper presents the characterization of the magnetic properties of laminated cores for electrical machines at ambient and cryogenic temperature. Silicon-iron stator cores of different steel grades are characterized experimentally at room temperature and when immersed in a liquid nitrogen atmosphere. The magnetic characterizations involve the measurement of the normal magnetization curve, and the core losses in a wide range of frequencies and magnetic flux densities. The separation of the losses into their physical components is carried out with an energy-based approach aiming at a thorough analysis of each loss contribution. The results show that the cryogenic temperature does not significantly impact the magnetization characteristic of the material, regardless the tested steel grade. The core losses generally increase at cryogenic temperature. The separation of the losses into components shows that the hysteresis contribution is not much affected by the cryogenic temperature; the global dynamic losses increase at a rate that depends on the steel grade instead, at least in the examined frequency and flux density ranges.

Iron Loss Characterization in Laminated Cores at Room and Liquid Nitrogen Temperature / Biasion, Marco; Santos Perdigao Peixoto, Ines; Fernandes, Joao F. P.; Vaschetto, Silvio; Bramerdorfer, Gerd; Cavagnino, Andrea. - ELETTRONICO. - (2022), pp. 1-8. (Intervento presentato al convegno 2022 IEEE Energy Conversion Congress and Exposition (ECCE) tenutosi a Detroit, MI, USA nel 09-13 October 2022) [10.1109/ECCE50734.2022.9948041].

Iron Loss Characterization in Laminated Cores at Room and Liquid Nitrogen Temperature

Biasion, Marco;Santos Perdigao Peixoto, Ines;Vaschetto, Silvio;Cavagnino, Andrea
2022

Abstract

This paper presents the characterization of the magnetic properties of laminated cores for electrical machines at ambient and cryogenic temperature. Silicon-iron stator cores of different steel grades are characterized experimentally at room temperature and when immersed in a liquid nitrogen atmosphere. The magnetic characterizations involve the measurement of the normal magnetization curve, and the core losses in a wide range of frequencies and magnetic flux densities. The separation of the losses into their physical components is carried out with an energy-based approach aiming at a thorough analysis of each loss contribution. The results show that the cryogenic temperature does not significantly impact the magnetization characteristic of the material, regardless the tested steel grade. The core losses generally increase at cryogenic temperature. The separation of the losses into components shows that the hysteresis contribution is not much affected by the cryogenic temperature; the global dynamic losses increase at a rate that depends on the steel grade instead, at least in the examined frequency and flux density ranges.
2022
978-1-7281-9387-8
File in questo prodotto:
File Dimensione Formato  
Iron_Loss_Characterization_in_Laminated_Cores_at_Room_and_Liquid_Nitrogen_Temperature.pdf

accesso riservato

Tipologia: 2a Post-print versione editoriale / Version of Record
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 1.3 MB
Formato Adobe PDF
1.3 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
2022125685.pdf

accesso aperto

Tipologia: 2. Post-print / Author's Accepted Manuscript
Licenza: Pubblico - Tutti i diritti riservati
Dimensione 1.24 MB
Formato Adobe PDF
1.24 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2975807