Calculation of Leakage Inductance and Induced Voltage of Three-Phase Squirrel Cage Induction Motor

Three-Phase Squirrel Cage Induction Motor is widely used in Industry. In case of induction motor, leakage inductance is important for deciding characteristic of machine. Therefore, if leakage inductance is able to calculate accurately, calculated characteristic and actual characteristic become approximation. As calculation method of leakage inductance, sum of primary and secondary leakage inductance are able to calculate from measurement. However, it is difficult to separate. Leakage inductance can be calculated from calculation formula. And there is the method that calculates it from finite element method (FEM). In addition, Induced voltage of a Rotor is important to calculate leakage inductance. Result is compared with the value that calculated from calculation formula and experiment. The calculated results by FEM agreed well with the experimental values than the conventional calculation results and the effectiveness of the calculation method by FEM was confirmed