Generalized theory of the structures of reluctance step motors

Based on classical machines with regularly displayed stator poles, the authors present methods for designing motors with a dissymmetrical stator, which make it possible to increase considerably the range of the possible numbers, S, of steps by turn. In theory, all the values of S can be obtained except prime numbers. In practice, it is difficult to obtain numbers of the form 2q, where q is a large prime number, since the only possible associate a motor must have two teeth, thus too many phases. The dissymmetrical structure can be of great interest in robotic applications, i.e., when specific and precise moves or when specific synchronous-type speeds are required