The application of multi – pole bonded magnets in electric motors

Dielectromagnets, also called bonded magnets, are permanent magnets produced by combining hard magnetic powder with dielectric. They have many advantages. One of these for isotropic dielectromagnets is the possibility of multi - pole magnetization in all directions. Dielectromagnets from Nd-Fe-B melt-spun ribbon have good magnetic properties, better than sintered ferrite magnets. Dielectromagnets open new possibilities for the construction of electric machines. The paper presents the advantages of multi - pole dielectromagnets, allowing to replace the multi - pole glued constructions of bipolar permanent magnets. The paper presents the known methods of multi - pole magnetization of permanent magnets, and new solutions for simplification of electric motor designs. Also presented are examples of application of multi - pole Nd-Fe-B dielectromagnets.