Toward including the effect of manufacturing processes in the pre-estimated losses of the switched reluctance motor

• Main Authors: Eyhab El-Kharahi, Maher El-Dessouki, Pia Lindh, J. Pyrhönen
• Format: Article
• Language: English
• Published: Elsevier 2015-03-01
• Series: Ain Shams Engineering Journal
• Subjects: Iron losses; Manufacturing effect; Adaptive finite element; Matlab/Simulink; High non-linear machine; Steinmetz formulas
• Online Access: http://www.sciencedirect.com/science/article/pii/S2090447914001191

The estimation of losses plays a key role in the process of building any electrical machine. How to estimate those losses while designing any machine; by obtaining the characteristic of the electrical steel from the catalogue and calculate the losses. However, this way is inaccurate since the electrical steel performs several manufacturing processes during the process of building any machine, which affects directly the magnetic property of the electrical steel and accordingly the characteristic of the electrical steel will be affected. That means the B–H curve of the steel that was obtained from the catalogue will be changed. Moreover, during loading and rotating the machine, some important changes occur to the B–H characteristic of the electrical steel such as the stress on the laminated iron. Accordingly, the pre-estimated losses are completely far from the actual losses because they were estimated based on the data of the electrical steel obtained from the catalogue. So in order to estimate the losses precisely significant factors of the manufacturing processes must be included. The paper introduces the systematic estimation of the losses including the effect of one of the manufacturing factors. Similarly, any other manufacturing factor can be included in the pre-designed losses estimations.