4. Conclusion

Finally, the symmetrical nature of the winding makes it possible to condense the information with two parameters: the phase distribution vector (describing the winding pattern) and the circularity index (expressing the mechanical angular offset between two consecutive phases). The winding pattern defines the amplitude and angle of these harmonics, forming the complex winding coefficient. Arithmetic defines the space harmonics reached for a given power supply sequence. In particular, for a machine with a large number of phases, if it is possible to impose a given supply sequence, then the space harmonics of the other sequences are absent from the MMF wave, which reduces design constraints compared to a three-phase winding, for example. Simple to implement, the winding modelling presented here should facilitate the exploration of new distributions, particularly with a large number of phases,...