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公开(公告)号：US20240061029A1
公开(公告)日：2024-02-22
申请号：US18488648
申请日：2023-10-17
摘要： The present application relates to apparatus (400, 500) for measuring an impedance of an electrical load (300) that is configured to be coupled to a controlled current source (200). The apparatus (400, 500) comprises a first coupling node (402) configured to be coupled to a first terminal (302) of the load (300) and a second coupling node (404) configured to be coupled to a second terminal (304) of the load (300). The apparatus further comprises a transformer (406) having a primary winding (408) and a secondary winding (410) and a capacitance (412) connected in series between a first terminal (414) of the secondary winding (410) and the first coupling node (402). A second terminal (416) of the secondary winding (410) is connected to the second coupling node (404). The apparatus further comprises a processing unit (424) is configured to control an excitation signal that is applied to the primary winding (408) so as to cause a variation, corresponding to the excitation signal, in an input current of the load (300), measure the input current and an input voltage of the load (300), and, based on the measured input current and input voltage, determining the impedance of the load (300).
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公开(公告)号：US11859667B2
公开(公告)日：2024-01-02
申请号：US17879465
申请日：2022-08-02
CPC分类号： F16C32/0474 , G01D5/2046 , H02K1/30 , H02K3/524 , H02K7/09 , H02K11/225 , H02K2203/03 , H02K2203/12
摘要： A position sensor includes a plurality of E-shaped ferromagnetic cores arranged to define a circular opening therethrough to receive a shaft. Each E-shaped ferromagnetic core has a plurality of teeth, wherein adjacent E-shaped ferromagnetic cores of the arranged plurality of E-shaped ferromagnetic cores have an overlapping tooth. The position sensor further includes a frame surrounding the arranged plurality of E-shaped ferromagnetic cores, with the E-shaped ferromagnetic cores coupled to the frame.
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公开(公告)号：US20230235785A1
公开(公告)日：2023-07-27
申请号：US18115138
申请日：2023-02-28
发明人： Esa Heikki Matias Vikman , Fredrik Boxberg , Juha T. Saari , Petri J. Maki-Ontto , Lauri Juhani Salmia
CPC分类号： F16C32/0485 , H02K11/21 , F16C32/0474 , H02K7/09 , H02K9/16 , H02K9/18 , H02K11/0141
摘要： An active magnetic bearing apparatus for supporting a rotor of a rotary machine comprises an axial magnetic bearing unit and a radial magnetic bearing unit mounted directly to one another. One of the axial magnetic bearing unit and the radial magnetic bearing unit is mounted to a support for attachment to a housing of the rotary machine.
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公开(公告)号：US20220229100A1
公开(公告)日：2022-07-21
申请号：US17712466
申请日：2022-04-04
摘要： The present application relates to apparatus (400, 500) for measuring an impedance of an electrical load (300) that is configured to be coupled to a controlled current source (200). The apparatus (400, 500) comprises a first coupling node (402) configured to be coupled to a first terminal (302) of the load (300) and a second coupling node (404) configured to be coupled to a second terminal (304) of the load (300). The apparatus further comprises a transformer (406) having a primary winding (408) and a secondary winding (410) and a capacitance (412) connected in series between a first terminal (414) of the secondary winding (410) and the first coupling node (402). A second terminal (416) of the secondary winding (410) is connected to the second coupling node (404). The apparatus further comprises a processing unit (424) is configured to control an excitation signal that is applied to the primary winding (408) so as to cause a variation, corresponding to the excitation signal, in an input current of the load (300), measure the input current and an input voltage of the load (300), and, based on the measured input current and input voltage, determining the impedance of the load (300).
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公开(公告)号：US20240344559A1
公开(公告)日：2024-10-17
申请号：US18751796
申请日：2024-06-24
发明人： Esa Heikki Matias Vikman , Fredrik Boxberg , Juha T. Saari , Petri J. Maki-Ontto , Lauri Juhani Salmia
CPC分类号： F16C32/0485 , F16C32/0474 , H02K7/09 , H02K9/16 , H02K9/18 , H02K11/0141 , H02K11/21
摘要： An active magnetic bearing apparatus for supporting a rotor of a rotary machine comprises an axial magnetic bearing unit and a radial magnetic bearing unit mounted directly to one another. One of the axial magnetic bearing unit and the radial magnetic bearing unit is mounted to a support for attachment to a housing of the rotary machine.
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公开(公告)号：US12018718B2
公开(公告)日：2024-06-25
申请号：US18115138
申请日：2023-02-28
发明人： Esa Heikki Matias Vikman , Fredrik Boxberg , Juha T. Saari , Petri J. Maki-Ontto , Lauri Juhani Salmia
CPC分类号： F16C32/0485 , F16C32/0474 , H02K7/09 , H02K9/16 , H02K9/18 , H02K11/0141 , H02K11/21
摘要： An active magnetic bearing apparatus for supporting a rotor of a rotary machine comprises an axial magnetic bearing unit and a radial magnetic bearing unit mounted directly to one another. One of the axial magnetic bearing unit and the radial magnetic bearing unit is mounted to a support for attachment to a housing of the rotary machine.
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公开(公告)号：US11592060B2
公开(公告)日：2023-02-28
申请号：US17563324
申请日：2021-12-28
发明人： Esa Heikki Matias Vikman , Fredrik Boxberg , Juha T. Saari , Petri J. Maki-Ontto , Lauri Juhani Salmia
摘要： An active magnetic bearing apparatus for supporting a rotor of a rotary machine comprises an axial magnetic bearing unit and a radial magnetic bearing unit mounted directly to one another. One of the axial magnetic bearing unit and the radial magnetic bearing unit is mounted to a support for attachment to a housing of the rotary machine.
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公开(公告)号：US20230055707A1
公开(公告)日：2023-02-23
申请号：US17879465
申请日：2022-08-02
摘要： A position sensor includes a plurality of E-shaped ferromagnetic cores arranged to define a circular opening therethrough to receive a shaft. Each E-shaped ferromagnetic core has a plurality of teeth, wherein adjacent E-shaped ferromagnetic cores of the arranged plurality of E-shaped ferromagnetic cores have an overlapping tooth. The position sensor further includes a frame surrounding the arranged plurality of E-shaped ferromagnetic cores, with the E-shaped ferromagnetic cores coupled to the frame.
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公开(公告)号：US11293960B2
公开(公告)日：2022-04-05
申请号：US16777476
申请日：2020-01-30
摘要： The present application relates to apparatus (400, 500) for measuring an impedance of an electrical load (300) that is configured to be coupled to a controlled current source (200). The apparatus (400, 500) comprises a first coupling node (402) configured to be coupled to a first terminal (302) of the load (300) and a second coupling node (404) configured to be coupled to a second terminal (304) of the load (300). The apparatus further comprises a transformer (406) having a primary winding (408) and a secondary winding (410) and a capacitance (412) connected in series between a first terminal (414) of the secondary winding (410) and the first coupling node (402). A second terminal (416) of the secondary winding (410) is connected to the second coupling node (404). The apparatus further comprises a processing unit (424) is configured to control an excitation signal that is applied to the primary winding (408) so as to cause a variation, corresponding to the excitation signal, in an input current of the load (300), measure the input current and an input voltage of the load (300), and, based on the measured input current and input voltage, determining the impedance of the load (300).
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公开(公告)号：US11209046B2
公开(公告)日：2021-12-28
申请号：US16748343
申请日：2020-01-21
发明人： Esa Heikki Matias Vikman , Fredrik Boxberg , Juha T. Saari , Petri J. Mäki-Ontto , Lauri Juhani Salmia
摘要： An active magnetic bearing apparatus for supporting a rotor of a rotary machine comprises an axial magnetic bearing unit and a radial magnetic bearing unit mounted directly to one another. One of the axial magnetic bearing unit and the radial magnetic bearing unit is mounted to a support for attachment to a housing of the rotary machine.
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