Abstract
Three-phase induction motors continue to dominate industrial and commercial sectors due to their high efficiency, robustness, and low maintenance requirements. This data article presents a curated dataset of optimized design parameters for three-phase induction motors covering output ratings from 0.5 kW to 100 kW. Motor parameters (stator/rotor dimensions, winding details, air-gap flux, copper/core losses, torque, slip, efficiency, power factor, currents, flux per pole, temperature rise, etc.) were computed by a Python based computational framework implementing standard electromechanical design equations. The original 200 design instances were scientifically expanded to 6000 to represent viable design alternatives. To demonstrate dataset reliability and practical utility, descriptive statistics and tree-based regressors (Decision Tree, Random Forest, Extra Trees) were applied on held out test sets and evaluated with MAE, RMSE, and R². The Extra Trees model yielded the lowest errors (e.g., MAE ≈ 7.31 W and RMSE ≈ 11.62 W for full-load losses; MAE ≈ 0.0073% and RMSE ≈ 0.0232% for efficiency) with R² ≳ 0.9996 and residuals concentrated near zero (≈0.0073-9.1536). These results confirm the internal consistency of the physics-driven dataset and its suitability for simulation, preliminary design studies, controller tuning, and predictive maintenance. However, the current dataset does not incorporate nonlinear magnetic effects, thermal constraints, or experimental validation, which will be addressed in future extended versions.