Permanent-magnet-less synchronous reluctance system

A synchronous system comprising:

• a stator that generates a magnetic revolving field when sourced by an alternating current;
• an excitation core that comprises two or more magnetically conducting discs positioned apart from the stator, the excitation core includes recessed spaces that receive excitation coils;
• an uncluttered rotor disposed within the magnetic revolving field and spaced apart from the stator to form an air gap relative to an axis of rotation;
• where the uncluttered rotor comprises:
• a plurality of rotor pole stacks having an inner periphery biased by single polarity of a north-pole field and a south-pole field, respectively, and the outer periphery of each of the rotor pole stacks are biased by an alternating polarity;
• and
• a stationary excitation core disposed within and circumferentially separated from the plurality of rotor pole stacks, the stationary excitation core comprising a plurality of recessed ring-shaped spaces for receiving a plurality of excitation conductors, the recessed ring-shaped spaces being disposed adjacent to each other and about an axis of rotation of the uncluttered rotor;
• and
• where each of the inner peripheries of the plurality of rotor pole stacks biased by the single polarity are spaced apart by a spacer ring having an unbiased inner periphery.