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公开(公告)号：US20190356260A1
公开(公告)日：2019-11-21
申请号：US16414880
申请日：2019-05-17
Applicant: Wisconsin Alumni Research Foundation
Inventor： Eric Loren Severson
Abstract: A machine drive includes a suspension force inverter, a torque inverter, and a capacitor. The suspension force inverter provides suspension force electrical signals to suspension force electrical terminals. Each suspension force electrical terminal connects to a suspension coil of a stator winding. Each suspension force electrical signal provides a phase to a single suspension force electrical terminal. A single stator winding is associated with each phase. The torque inverter provides torque electrical signals to torque electrical terminals. Each torque electrical signal provides the phase to a single torque electrical terminal. Each torque electrical terminal connects to both the suspension coil and a torque coil of the single stator winding of the associated phase. The capacitor connected in parallel across the suspension force inverter. The torque inverter is connected to a voltage source. The capacitor is connected to the voltage source through the torque invertor and the suspension force inverter.
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公开(公告)号：US11018552B2
公开(公告)日：2021-05-25
申请号：US16387959
申请日：2019-04-18
Applicant: Wisconsin Alumni Research Foundation
Inventor： Eric Loren Severson , Nicholas Robert Hemenway
Abstract: A first radial force value and a second radial force value is received by a radial magnetic bearing controller. Coefficients are computed for a first equation using the first and second radial force values. The first equation is solved to define first solution values. A second solution value paired with each first solution value is computed using the first radial force value and a respective first solution value to define second solution values. Control current sets are computed for each unique paired solution of the second solution values and the first solution values. Each control current set includes a control current value for each of three control currents. A control current value for each of the three control currents is selected from the control current sets. The control current value for each of the three control currents is output to a respective radial winding of a three-pole radial magnetic bearing.
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Patent Agency Ranking
公开(公告)号：US12126223B2
公开(公告)日：2024-10-22
申请号：US17734519
申请日：2022-05-02
Applicant: Wisconsin Alumni Research Foundation
Inventor： Eric Loren Severson , Zhouzhou Wang
IPC: H02K1/2796 , H02K3/28 , H02K7/09
CPC classification number: H02K1/2796 , H02K3/28 , H02K7/09
Abstract: A machine system includes a shaft, a first rotor, a first stator, a second rotor, a second stator, a first, first-phase coil and a second, first-phase coil of a first stator winding, a first, second-phase coil and a second, second-phase coil of a second stator winding, and a first, third-phase coil and a second, third-phase coil of a third stator winding wound about the first stator, a first, first-phase coil and a second, first-phase coil of a fourth stator winding, a first, second-phase coil and a second, second-phase coil of a fifth stator winding, and a first, third-phase coil and a second, third-phase coil of a sixth stator winding wound about the second stator, and an inverter drive system. The stator windings are configured to provide a torque and a suspension force under control of an inverter drive system consisting of only three inverters.
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公开(公告)号：US20210184550A1
公开(公告)日：2021-06-17
申请号：US17117185
申请日：2020-12-10
Applicant: Wisconsin Alumni Research Foundation
Inventor： Eric Loren Severson , Jiahao Chen
IPC: H02K17/16
Abstract: A rotor for a bearingless induction motor is provided. A rotor core defines rotor slots. A rotor winding includes a common connector plate, a plurality of rotor connector plates, and a slot conductor mounted within each rotor slot. The common connector plate is mounted adjacent a first end of the rotor core. The plurality of rotor connector plates is mounted adjacent a second end of the rotor core. Each slot conductor is electrically connected to the common connector plate and to one rotor connector plate of the plurality of rotor connector plates. Each rotor connector plate of the plurality of rotor connector plates is configured to connect a group of slot conductors that includes at least two slot conductors. A number of slot conductors included in the group of slot conductors is defined based on a predefined number of suspension pole pairs selected to provide a radial suspension force.
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公开(公告)号：US20230352997A1
公开(公告)日：2023-11-02
申请号：US17734519
申请日：2022-05-02
Applicant: Wisconsin Alumni Research Foundation
Inventor： Eric Loren Severson , Zhouzhou Wang
IPC: H02K1/2796 , H02K3/28
CPC classification number: H02K1/2796 , H02K3/28 , H02K7/09
Abstract: A machine system includes a shaft, a first rotor, a first stator, a second rotor, a second stator, a first, first-phase coil and a second, first-phase coil of a first stator winding, a first, second-phase coil and a second, second-phase coil of a second stator winding, and a first, third-phase coil and a second, third-phase coil of a third stator winding wound about the first stator, a first, first-phase coil and a second, first-phase coil of a fourth stator winding, a first, second-phase coil and a second, second-phase coil of a fifth stator winding, and a first, third-phase coil and a second, third-phase coil of a sixth stator winding wound about the second stator, and an inverter drive system. The stator windings are configured to provide a torque and a suspension force under control of an inverter drive system consisting of only three inverters.
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公开(公告)号：US11621620B2
公开(公告)日：2023-04-04
申请号：US17117185
申请日：2020-12-10
Applicant: Wisconsin Alumni Research Foundation
Inventor： Eric Loren Severson , Jiahao Chen
IPC: H02K17/16
Abstract: A rotor for a bearingless induction motor is provided. A rotor core defines rotor slots. A rotor winding includes a common connector plate, a plurality of rotor connector plates, and a slot conductor mounted within each rotor slot. The common connector plate is mounted adjacent a first end of the rotor core. The plurality of rotor connector plates is mounted adjacent a second end of the rotor core. Each slot conductor is electrically connected to the common connector plate and to one rotor connector plate of the plurality of rotor connector plates. Each rotor connector plate of the plurality of rotor connector plates is configured to connect a group of slot conductors that includes at least two slot conductors. A number of slot conductors included in the group of slot conductors is defined based on a predefined number of suspension pole pairs selected to provide a radial suspension force.
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公开(公告)号：US20200336041A1
公开(公告)日：2020-10-22
申请号：US16387959
申请日：2019-04-18
Applicant: Wisconsin Alumni Research Foundation
Inventor： Eric Loren Severson , Nicholas Robert Hemenway
Abstract: A first radial force value and a second radial force value is received by a radial magnetic bearing controller. Coefficients are computed for a first equation using the first and second radial force values. The first equation is solved to define first solution values. A second solution value paired with each first solution value is computed using the first radial force value and a respective first solution value to define second solution values. Control current sets are computed for each unique paired solution of the second solution values and the first solution values. Each control current set includes a control current value for each of three control currents. A control current value for each of the three control currents is selected from the control current sets. The control current value for each of the three control currents is output to a respective radial winding of a three-pole radial magnetic bearing.
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