Balancing Torque Loss and Cogging Reduction at PM Transverse Flux Machines with Segmented Stator Phases

摘要

PM Transverse Flux Machines (PMTFMs) can achieve higher torque densities than conventionalPM Longitudinal Flux Machines (PMLFMs). Unfortunately, a general problem ofPMTFMs is their high cogging torque compared to the average torque. One way to solve thisproblem is skewing at segmented stator phases. But this method reduces the average torqueof the machine. The paper deals with this dependence and introduces a suitable compromiserelated to this problem. The investigation is based on analytical and FEM calculations. Thecalculation results were validated by measurements at a prototype.