The paper presents a detailed analysis and comparison of two types of non-axial windings used for slotless permanent magnet (PM) motors: zigzag and rhombic ones. The motor mathematical model is verified by 3D FEM software. Finally, the motor prototype is presented.
Dehez, B., Markovic, M., & Perriard, Y. (2010). Analysis of BLDC motor with zigzag and rhombic winding. Electrical Machines (ICEM), 2010 XIX International Conference on. Published. Proceedings of the XIX International Conference on Electrical Machines - ICEM 2010, Rome, Italy. https://doi.org/10.1109/ICELMACH.2010.5608326