Modelling and analysis of the effects of cutting of core laminations in electric machines

• Published in: IET electric power applications Vol. 14; no. 12; pp. 2355 - 2361
• Main Authors: Alatawneh, Natheer, Saleem, Aroba, Rahman, Tanvir, Lowther, David A, Chromik, Richard
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 01.12.2020
• Subjects: computation efficiency; core laminations; cutting; cutting lack accuracy; electric machines; electrical machine performances; electrical steel; FE permanent magnet synchronous motor model; finite element analysis; finite element software; iron alloys; laminates; magnetic properties; material properties; multislice technique; permanent magnet motors; permanent magnets; Research Article; synchronous motors; iron alloys; finite element analysis; finite element software; synchronous motors; permanent magnets; core laminations; computation efficiency; material properties; cutting lack accuracy; magnetic properties; FE permanent magnet synchronous motor model; cutting; electric machines; multislice technique; electrical steel; permanent magnet motors; laminates; electrical machine performances
• ISSN: 1751-8660; 1751-8679; 1751-8679
• DOI: 10.1049/iet-epa.2020.0218

Experimental measurements of electrical machine performances reveal a significant difference between simulations and measurements. It is known that the manufacturing processes of machines, particularly, the cutting of core laminations adversely affects material properties. The current techniques for considering the effects of cutting lack accuracy, computation efficiency and applicability for finite element (FE) software. This study proposes a method to model the variation in the magnetic properties of electrical steel due to cutting based on a non-equal multi-slice technique. In this work, the method has been validated and implemented on a FE permanent magnet synchronous motor model. Also, the proposed method has been compared with the single-layer method.