Investigation of Various Laminating Materials for Interior Permanent Magnet Brushless DC Motor for Cooling Fan Application

Permanent magnet brushless DC motors are used for various low-power applications, namely domestic fans, washing machines, mixer grinders and cooling fan applications. This paper focuses on selecting the best laminating material for the interior permanent magnet brushless DC (IPM BLDC) motor used in the cooling fan of automobiles. Various laminating materials, namely M19-29GA, M800-65A and M43, are tested using finite element analysis. The machine's vital performance metrics, namely the stator current, torque ripple, and hysteresis loss were analyzed in selecting the laminating material. The designed motor is also modelled as a mathematical model from the computed lumped parameters. The performance of the machines was validated through electromagnetic and thermal analysis.