Power Factor Calculation by the Finite Element Method

The use of finite element analysis (FEA) to design electrical motors has increased significantly in recent years due to advances in computer performance. This study aims to evaluate a new methodology for calculating the power factor of small single-phase induction motors using FEA. The methodology addresses the challenges that arise from the saturation phenomena, which contribute to a high level of harmonics in the input motor current. Traditional power factor calculations can be complex, often neglecting these harmonics. By utilizing FEA, this work seeks to deliver a more accurate representation of the power factor by simulating the motor's performance under realistic conditions. Results from both simulations and physical tests are compared to validate the proposed methodology. The findings indicate that FEA can effectively delineate the power factor or displacement factor in small single-phase induction motors, making it a valuable tool for motor designers aiming for improved accuracy in performance evaluations.