Commutatorless direct current motor with a bell-shaped, double cylinder's permanent magnet rotor and an air-core stator winding

摘要

A DC motor having no commutator and having a permanent-magnet rotor and a stator winding with no iron and is arranged in an air gap between rotor iron parts. The three-phase stator winding consists of at least 3n concentric coils, which do not overlap and are distributed equidistantly, and the rotor magnet is provided with 2n poles, n being an integer greater than or equal to 1. IMAGE