Optimum Design of 75 Nm, 300 rpm rated Transverse Flux Rotary Machine for direct drive motor using penalty method and Kriging with constraint

TFRM(Transverse Flux Rotary Machine) has many defects. This paper develops 3 phase TFRM with high torque and low torque ripple, satisfying demanded speed and nominal torque in direct drive motor and compares optimized 3 phase TFRM with existing prototype TFRM. This paper presents the statistical optimum design of 3 phase TFRM for direct-drive motor system using the penalty method (characteristic function) and Kriging with constraints to control penalty coefficients in discrete design space and continuous design space, ANOM (analysis of means) and table of orthogonal array. The optimized 3 phase TFRM has better performance in torque and speed with satisfaction to required performance for direct-drive motor system (speed [250 rpm], torque [75 Nmm]).