In this study, it is shown that the multiphase IM can be regarded as a superposition of independence, decoupled large-pole and small-pole IM by using the VSD conversion and multiphase IM drive system (IMTS: Induction Motor drive with Transmission System) that actively utilizes pole change is proposed. By deriving a mathematical formula, the factor of torque fluctuation response due to conflict of ...Show More
In this study, it is shown that the multiphase IM can be regarded as a superposition of independent, decoupled large-pole and small-pole IM by using the VSD conversion in a multiphase IM drive system (IMTS) that actively utilizes pole change. By deriving a mathematical formula, the factor of torque fluctuation response due to conflict of voltage limiter during pole number change is identified. In ...Show More
In this paper, a nine-phase induction motor is proposed with a comparison of a three-phase motor. The nature of spatial harmonic reduction in nine-phase motors is described and power losses reduction is presented. Both models are analyzed using finite element analysis (FEA), providing detailed results of power losses, magnetic flux density, torque ripple and current density. Data analysis method a...Show More
