Reluctance and Magductance Calculation of Laminated Core Under Different Frequency for Electrical Machines

It is well known that the magnetic circuit theory can directly reflect the real change of magnetic circuit parameters. In this paper, a new magnetic component - magductance, together with reluctance, is proposed to accurately describe the effect of operating frequency on the parameters of the magnetic circuit. According to the distribution of magnetic flux in the laminated core, the expressions of reluctance and magductance are derived by combining the electromagnetic theory and the vector magnetic circuit theory. The validity of these expressions is demonstrated by an experimental platform with Epstein frame.