Synchronous Reluctance Motor

A synchronous reluctance motor comprising:

• a stator;
• and
• a rotor, the rotor being provided with a number of flux barrier groups each constituted from a plurality of arcuate flux barriers and spaced from each other in a circumferential direction, the number of the flux barrier groups being equal to that of poles, and the flux barriers being disposed in a plurality of layers from an outer periphery toward a center and being convex toward the center, wherein
• when a region surrounded by a polygon with vertexes constituted by circumferential center points of the flux barrier groups on an outer peripheral edge of the rotor as viewed in plan in a direction along a rotary shaft of the rotor is defined as a polygonal region, the plurality of flux barriers in each of the flux barrier groups include arcuate portions formed in the polygonal region,
• an arcuate center of the arcuate portions in each of the flux barrier groups is set to the circumferential center point of the flux barrier group on the outer peripheral edge of the rotor, and
• when regions of the rotor interposed between two flux barriers that are adjacent to each other in the flux barrier groups are defined as ribs, and portions of the rotor that are close to the outer periphery of the rotor in the regions of the rotor interposed between flux barrier groups that are adjacent to each other are defined as connecting portions, a ratio of a width of the connecting portions to a width of the ribs is 0.53 or more and 0.8 or less.