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公开(公告)号：US10910893B2
公开(公告)日：2021-02-02
申请号：US15750394
申请日：2016-06-24
Applicant: ABB Schweiz AG
Inventor： Jere Kolehmainen , Tero Kansakangas , Pietro Savio Termini
Abstract: A rotor for a synchronous reluctance machine having an even number 2 p of poles circumferentially spaced at an angle α, with α=2 π/2 p, the rotor comprising a substantially cylindrical laminate stack having a plurality of magnetically conductive laminations. One or more of the magnetically conductive laminations includes non-magnetic flux barriers which are spaced from each other in the radial direction, one or more of the non-magnetic flux barriers having a first and second bridge transversally positioned in correspondence of their lateral ends and defining a first and a second air-gap with the outer rim of the magnetically conductive lamination, and further including a third and a fourth bridge transversally positioned and respectively defining together with the first and second bridge a first and a second internal space which are filled with an electrically conductive and non-magnetically conductive material.
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公开(公告)号：US11362574B2
公开(公告)日：2022-06-14
申请号：US16471948
申请日：2016-12-21
Applicant: ABB Schweiz AG
Inventor： Pietro Savio Termini , Alessandro Castagnini , Giovanni Tartaglino , Michele Maggi , Jere Kolehmainen , Tero Kansakangas
Abstract: A rotor for a synchronous reluctance machine includes 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, where at least one of the flux barriers includes a ridge 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 a line that is equidistant from both sides of the at least one flux barrier. 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 intersect. The bridge has a first and second symmetry axis and is non-symmetrical with respect to at least one of the first and second symmetry axis.
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公开(公告)号：US20190319522A1
公开(公告)日：2019-10-17
申请号：US16471948
申请日：2016-12-21
Applicant: ABB Schweiz AG
Inventor： Pietro Savio Termini , Alessandro Castagnini , Giovanni Tartaglino , Michele Maggi , Jere Kolehmainen , Tero Kansakangas
Abstract: 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.
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公开(公告)号：US20180226848A1
公开(公告)日：2018-08-09
申请号：US15750394
申请日：2016-06-24
Applicant: ABB Schweiz AG
Inventor： Jere Kolehmainen , Tero Kansakangas , Pietro Savio Termini
CPC classification number: H02K1/246 , H02K1/276 , H02K19/14 , H02K2213/03
Abstract: A rotor for a synchronous reluctance machine having an even number 2 p of poles circumferentially spaced at an angle α, with α=2 π/2 p, the rotor comprising a substantially cylindrical laminate stack having a plurality of magnetically conductive laminations. One or more of the magnetically conductive laminations includes non-magnetic flux barriers which are spaced from each other in the radial direction, one or more of the non-magnetic flux barriers having a first and second bridge transversally positioned in correspondence of their lateral ends and defining a first and a second air-gap with the outer rim of the magnetically conductive lamination, and further including a third and a fourth bridge transversally positioned and respectively defining together with the first and second bridge a first and a second internal space which are filled with an electrically conductive and non-magnetically conductive material.
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