Rotor for an electrical machine having asymmetric poles and lateral magnets

A rotor for an electrical machine comprising:

• a rotor body, formed by a stack of laminations, placed on a rotor shaft;
• N pairs of magnetic poles with each magnetic pole including at least three magnets which are positioned in axial voids;
• and
• three asymmetric flux barriers which form each magnetic pole, which include one outer flux barrier, one center flux barrier and one inner flux barrier, each flux barrier comprising two inclined voids that are positioned on either side of each axial void, the two inclined voids forming an opening angle between them which corresponds to an angle between two straight lines each passing through the center of the rotor and through a midpoint positioned on an outer face of the respective voids of each flux barrier;
• and wherein
• the rotor comprises:
• magnets in the inclined voids of at least one flux barrier of each magnetic pole;
• N primary magnetic poles which each includes an inner flux barrier comprising an opening angle, a center flux barrier comprising an opening angle and an outer flux barrier comprising an opening angle with the opening angles satisfying at least two of the following three equations:
• θ1=(0.946+/0.014)×P, θ2=(0.711+/0.014)×P, θ3=(0.508+/0.014)×P;
• and
• N secondary magnetic poles each composed of an inner flux barrier comprising an opening angle, a center flux barrier comprising an opening angle and an outer flux barrier comprising an opening angle, such that the opening angles satisfy at least two of the following three equations:
• θ1=(0.776+/0.014)×P, θ2=(0.564+10.014)×P, θ3=(0.348+/0.014)×P, each secondary pole alternating with a primary pole;
• and wherein
• P is the pole pitch of rotor defined in degrees by
• P
• =
• 3
• ⁢
• 6
• ⁢
• 0
• 2
• ×
• N
• .