کنفرانس بین المللی ماشین و محرکه های الکتریکی

صفحه اصلی / The 5th International Conference on Electrical Machines and Drives

Fast Method for End Winding Leakage Inductance Calculation in Induction Motors

نویسندگان :

Mohamadreza Soleimani¹ Moein Farhadian² Hamed Tahanian³

1- R&D Department, MAPNA Generator Engineering and Manufacturing Co. (PARS) 2- R&D Department, MAPNA Generator Engineering and Manufacturing Co. (PARS) 3- R&D Department, MAPNA Generator Engineering and Manufacturing Co. (PARS) Karaj, Iran

کلمات کلیدی :

End-winding leakage inductance،induction motor،Finite Element Method (FEM)،fast modeling،magnetic energy method

چکیده :

Accurate evaluation of end-winding leakage inductance is crucial for the design and performance prediction of large induction machines, as it directly affects starting current, torque capability, and electromagnetic force estimation. Conventional analytical methods, while computationally efficient, often neglect fringing fluxes and therefore underestimate inductance. In contrast, full-core 3-D Finite Element (FE) models capture the complete electromagnetic behavior but impose prohibitive computational costs, particularly for large machines. This paper proposes a fast FE-based approach that eliminates or simplifies the magnetic core and retains only the coil geometry, thereby drastically reducing model complexity while preserving accuracy. The method explicitly accounts for both fringing and leakage fluxes and eliminates the dependence on nonlinear magnetic material, which enables consistent results across different operating conditions. Validation is carried out under both locked-rotor and rated conditions. The results demonstrate that the proposed approach reduces simulation time from several hours to only a few minutes while maintaining high accuracy compared to conventional FE. Owing to its efficiency and reliability, the method provides a practical and scalable tool for the design optimization and analysis of large electrical machines.