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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：US20180351424A1
公开(公告)日：2018-12-06
申请号：US15608398
申请日：2017-05-30
Applicant: ABB Schweiz AG
Inventor： Lorenzo Mazza , Alessandro Castagnini , Giulio Secondo
CPC classification number: H02K1/2766
Abstract: A rotor for an electric motor is provided. The rotor is constructed of a stack of first and second laminations. The laminations include segments and insulated regions between the segments. The first laminations include interconnections such that the first laminations are self-supporting. The second laminations are affixed to the first laminations to support the segments of the second laminations.
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3.发明授权公开(公告)号：US10804758B2
公开(公告)日：2020-10-13
申请号：US15770439
申请日：2016-09-14
Applicant: ABB Schweiz AG
Inventor： Pietro Savio Termini , Alessandro Castagnini , Giovanni Tartaglino , Michele Maggi
Abstract: A rotor for an interior permanent magnet machine (IPM), comprising a rotor core having a plurality of magnetically conductive laminations stacked in a rotor axial direction. The magnetically conductive laminations comprise cut-out portions forming a plurality of flux barriers (FB) radially alternated by flux paths (FP), at least a first part of the flux barriers (FB) housing permanent magnets, at least a second part of the flux barriers (FB) being filled with an electrically conductive and magnetically non-conductive material creating a cage inside the rotor core. The rotor further includes a first and a second short circuit ring positioned at the opposite ends of the rotor core, the first short circuit ring being different from the second short circuit ring.
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Patent Agency Ranking
公开(公告)号：US10476328B2
公开(公告)日：2019-11-12
申请号：US15608398
申请日：2017-05-30
Applicant: ABB Schweiz AG
Inventor： Lorenzo Mazza , Alessandro Castagnini , Giulio Secondo
IPC: H02K1/27
Abstract: A rotor for an electric motor is provided. The rotor is constructed of a stack of first and second laminations. The laminations include segments and insulated regions between the segments. The first laminations include interconnections such that the first laminations are self-supporting. The second laminations are affixed to the first laminations to support the segments of the second laminations.
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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：US10574174B2
公开(公告)日：2020-02-25
申请号：US15859463
申请日：2017-12-30
Applicant: ABB Schweiz AG
Inventor： Alessandro Castagnini , Darren Tremelling , Elio Alberto Perigo , Giulio Secondo , Liming Liu
Abstract: A method for operating an electrical machine having a stator and having a rotor with permanent magnets, includes: running the electrical machine; determining, while performing the running of the electrical machine, whether the permanent magnets have been demagnetized; finding, while running the electrical machine, the q-axis responsive to a determination that the permanent magnets have been demagnetized; firing a current pulse through the stator, while running the electrical machine, when the q-axis reaches a desired position relative to a selected stator phase, wherein the current pulse is constructed to remagnetize the permanent magnets; and continuing to run the electrical machine.
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公开(公告)号：US20190207550A1
公开(公告)日：2019-07-04
申请号：US15859463
申请日：2017-12-30
Applicant: ABB Schweiz AG
Inventor： Alessandro Castagnini , Darren Tremelling , Elio Alberto Perigo , Giulio Secondo , Liming Liu
Abstract: A method for operating an electrical machine having a stator and having a rotor with permanent magnets, includes: running the electrical machine; determining, while performing the running of the electrical machine, whether the permanent magnets have been demagnetized; finding, while running the electrical machine, the q-axis responsive to a determination that the permanent magnets have been demagnetized; firing a current pulse through the stator, while running the electrical machine, when the q-axis reaches a desired position relative to a selected stator phase, wherein the current pulse is constructed to remagnetize the permanent magnets; and continuing to run the electrical machine.
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8.发明申请公开(公告)号：US20180316232A1
公开(公告)日：2018-11-01
申请号：US15770439
申请日：2016-09-14
Applicant: ABB Schweiz AG
Inventor： Pietro Savio Termini , Alessandro Castagnini , Giovanni Tartaglino , Michele Maggi
Abstract: A rotor for an interior permanent magnet machine (IPM), comprising a rotor core having a plurality of magnetically conductive laminations stacked in a rotor axial direction. The magnetically conductive laminations comprise cut-out portions forming a plurality of flux barriers (FB) radially alternated by flux paths (FP), at least a first part of the flux barriers (FB) housing permanent magnets, at least a second part of the flux barriers (FB) being filled with an electrically conductive and magnetically non-conductive material creating a cage inside the rotor core. The rotor further includes a first and a second short circuit ring positioned at the opposite ends of the rotor core, the first short circuit ring being different from the second short circuit ring.
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