Contribution to the calculation of iron losses in Doubly-Salient Switched Reluctance Machine (DSSRM)

The classical formulations to calculate iron losses at sinusoidal induction cannot be applied to the Doubly Salient Switched Reluctance Machine (DSSRM) because of the polarized induction due to the operating principle. In the literature, there are not many works carried out in this field, and they do not take into account all data needed to evaluate the DSSRM losses. The classical formulations for the sinusoidal induction have been modified to be usable for the non-sinusoidal induction which can have a non-zero mean value as DSSRM. In 1995, Emmanuel HONG who studied modeling and measurement of magnetic losses in douby salient variable reluctance motors developed an analytical formulation to calculate iron losses. This model takes into account the elements of the machine geometric dimensioning control. The analytical calculation using this formulation is very complex and much time consuming and the results may not be accurate. The objective of our work is to develop programs using the Matlab software to simplify the calculation of the iron losses in different parts of DSSRM and to reduce the calculation time. Our programs are easy to use and give results which are more accurate and closer to reality.