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AssigneeABB Schweiz AG
InventorsPietro Savio Termini, Alessandro Castagnini, Giovanni Tartaglino, Michele Maggi, Jere Kolehmainen, Tero Kansakangas
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A rotor for a synchronous reluctance machine including a rotor core having a plurality of magnetically conductive laminations stacked in a rotor axial direction. The magnetically conductive laminations include cut-out portions forming a plurality of flux barriers radially alternated by flux paths portions, at least one of the flux barriers including a bridge connecting two flux paths portions adjacent to the at least one flux barrier. The at least one flux barrier has a first, barrier, mid-line which is the line that is equidistant from both sides of the at least one flux barrier, and the bridge has a second, bridge, mid-line which is the line that is equidistant from both sides of the bridge, the first and second mid-lines intersecting at an intersection point. The bridge has a first symmetry axis and a second symmetry axis and is non-symmetrical with respect to at least one of the first and second symmetry axis. The first symmetry axis is defined as the straight line tangential to the first, barrier, mid-line and passing through the intersection point, and the second symmetry axis is defined as the straight line orthogonal to the first symmetry axis and passing through the intersection point.
A rotor for a synchronous reluctance machine comprising a rotor core having a plurality of magnetically conductive laminations stacked in a rotor axial direction, wherein said magnetically conductive laminations comprising cut-out portions forming a plurality of flux barriers FB radially alternated by flux paths FP portions, at least one of said flux barriers FB comprising a bridge connecting two flux paths FP portions adjacent to said at least one flux barrier FB, said at least one flux barrier FB having a first, barrier, mid-line which is a line that is equidistant from both sides of said at least one flux barrier FB, said bridge having a second, bridge, mid-line which is a line that is equidistant from both sides of said bridge, said first and second mid-lines intersecting at an intersection point IC, said bridge having a first symmetry axis and a second symmetry axis, said first symmetry axis being defined as the straight line tangential to said first, barrier, mid-line and passing through said intersection point, said second symmetry axis being defined as the straight line orthogonal to said first symmetry axis and passing through said intersection point, said bridge being non-symmetrical with respect to at least one of said first and second symmetry axis.
Dependencies are inferred from the claim text.