Prediction of angular variation of specific total loss of Goss oriented electrical steel

Electrical steel (ES) is the optimal material for magnetic cores of large electrical machines and transformers. This material is graded according to the value of its specific total loss (PS). The anisotropy of its magnetic properties is also crucial in the selection for applications. This paper presents a new method of modeling angular properties of PS in Goss oriented ES. Additionally, the proposed method can be combined with the three components PS loss model and the angular behavior can be analyzed in a frequency domain. This approach can limit labor-intensive measurements necessary to describe angular properties of PS of ES with Goss texture. It may be also a useful tool for designers of magnetic cores of electrical devices. •The aim of this study is the investigation of angular behaviour of specific total loss in Goss textured electrical steel.•Five grades of Goss steel are investigated at peak flux densities up to 1.8 T and magnetisation frequencies up to 100 Hz.•The specific total loss separation is performed according to three components loss model.•An improved model of angular variation of specific total loss is presented.