کنفرانس بین المللی ماشین و محرکه های الکتریکی

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

Multiphysics Analysis of Stator and Frame in a Medium-power Induction motor

نویسندگان :

Behzad Bahrami Joo¹ Mohsen Nikfar²

1- Mechanical Design Specialist - R&D Department, MAPNA Generator Engineering and Manufacturing Co. (PARS) 2- Head of Mechanical Design Group - R&D Department, MAPNA Generator Engineering and Manufacturing Co. (PARS)

کلمات کلیدی :

multiphysics،electromagnetic forces،stator،short-circuit fault،induction motor

چکیده :

Multiphysics analysis of rotating electrical machines has become essential for accurately predicting their coupled electromagnetic, thermal, and structural behaviors under real operating conditions. This study presents a comprehensive finite element analysis of a medium-power induction motor designed by MAPNA Generator Engineering and Manufacturing Co. Technical specifications were derived from electromagnetic simulations, while structural evaluations included dimensional assessments of the stator and frame assemblies. The motor was subjected to various loading conditions, including mechanical pretension in bolts, rotor unbalance forces, thermal cycling caused by electrical losses, and electromagnetic stresses under fault scenarios. Specifically, a two-phase short-circuit fault was simulated to investigate its impact on stator integrity, with mapped electromagnetic loads. To improve computational efficiency, localized mesh refinement and torque mapping were implemented. The results demonstrate that maximum stresses occur at bolted joints and critical frame regions, while the composite inner cover and stator core maintain safety margins. These findings validate the reliability of the motor design under severe operating conditions.