Using the Design of Experiment Method to Develop an Energy Loss Model for Non-Oriented Electrical Steel Alloys

Abstract:

The main scope of the paper is to apply the Design of Experiment (DoE) method and to develop a predictive model of energy losses for non-oriented electrical steels. This approach permits us to determine a mathematical model, which is the predicted response (energy losses) as a function of input data (strip width and peak magnetic polarization) and experimental results. The presented DoE model is based on a classical central composite design of type 2ⁿ + 2n + 1 with two-levels (n = 2) and as a consequence only nine experimental points are necessary. The equation system that is associated with the model, generates a surface response equation, which permits the energy loss computation for different values of width strip and peak magnetic polarization. The DoE model was implemented, using different software packages as MathCad, Excel and OriginPro 2018, in the case of two types of electrical steels namely NO20 and M300-35A alloys that are used in small size electrical machines. In this case, the strain hardening phenomena at the cut edge becomes important, due to its negative impact on energy losses. The computed results were compared with the experimental data and errors lower than 5 % were determined.

• Periodical: Key Engineering Materials (Volume 902)
• Pages: 71-77
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.902.71
• Online since: October 2021
• Authors: Veronica Paltanea, Veronika Păltânea*, Horia Gavrila, Iosif Vasile Nemoianu
• Keywords: Design of Experiment Method, Energy Losses, Non-Oriented Alloys, Statistical Analysis

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