Optimisation of the magnetic circuit of transverse flux reluctance motors

W artykule przedstawiono optymalizację obwodu magnetycznego silników reluktancyjnych ze strumieniem osiowym, o budowie modułowej z wirnikiem zewnętrznym. Optymalizację przeprowadzono za pomocą algorytmu ewolucyjnego dostępnego w bibliotece programu Matlab oraz programu do obliczeń polowych - Flux3D.The paper presents new construction of the modular reluctance motor (Transverse Flux Motor) with an outer rotor. Due to change of the three-module motor magnetic circuit shape, the torque pulsa-tions are greatly reduced and the average electromagnetic torque is significantly increased. In particular, the main disadvantage of the two-module motor structure, that is a zero starting torque in some rotor positions, is eliminated by construction optimisation. A motor numerical model developed in the Flux3D program is coupled with a Matlab-based evolutionary algorithm used for optimisation of the magnetic circuit construction parameters. In the evolutionary algorithm six or seven parameters were taken into account. The elaborated algorithm is also connected with a database to limit the computation cost. Three objective functions were taken into account for the motor integral parameter improvement. Several computer simulations were carried out and the results were compared with those obtained for the previous prototype version of the motors