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公开(公告)号：US11183322B2
公开(公告)日：2021-11-23
申请号：US15958220
申请日：2018-04-20
Applicant: ABB Schweiz Ag
Inventor： Harish Suryanarayana , Jiaqi Liang , Jukka Pekka Kittila , Wen Ouyang
Abstract: Unique systems, methods, techniques and apparatuses for a ZVT ZCT resonant converter with a variable resonant tank are disclosed. One exemplary embodiment is a system comprising a bidirectional resonant converter comprising an input/output terminal, a switching device coupled with the input/output terminal, a resonant circuit coupled with the switching device and including a variable inductor, an output/input terminal coupled with the resonant circuit, and a DC biasing circuit operatively coupled with the variable inductor. The variable inductor comprises a toroidal core, a first winding wound around the toroidal core and coupled with the switching device and the output/input terminal, a second core structured to overlap a portion of the toroidal core, and a second winding wound around the second core and coupled with the DC biasing circuit. The DC biasing circuit is controllable to vary the inductance of the variable inductor by saturating a portion of the toroidal core.
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公开(公告)号：US10097123B2
公开(公告)日：2018-10-09
申请号：US15726443
申请日：2017-10-06
Applicant: ABB Schweiz AG
Inventor： Ghanshyam Shrestha , Darren Tremeling , Waqas Arshad , Wen Ouyang , Jan Westerlund
IPC: H02P9/30 , H02K3/28 , H02K3/20 , H02K11/042 , H02K19/12
Abstract: A synchronous machine and related systems include a stator and rotor separated by an air gap. The rotor includes a rotating DC power supply coupled to exciter windings disposed adjacent the air gap. Power from air gap harmonics, including air gap slot harmonics induce current in the exciter windings, which is rectified and supplied to the rotor field windings. In operation, a desired current level in the rotor field windings can be achieved through control of the DC power supply or superposition of harmonics into the stator winding current which induces the prescribed current in exciter windings.
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Patent Agency Ranking
公开(公告)号：US10804781B2
公开(公告)日：2020-10-13
申请号：US16231098
申请日：2018-12-21
Applicant: ABB Schweiz AG
Inventor： Wen Ouyang , Colin Tschida
Abstract: An electrical machine includes a stator and a rotor in magnetic communication with the stator. The rotor has a cage construction, the rotor having a plurality of passages extending therethrough from a first end of the rotor to a second end of the rotor. A rotor cage has two end rings, one of the end rings disposed at each of the first end and the second end of the rotor, and having a plurality of conductor bars extending through the rotor from the first end to the second end and coupled with the end rings. The conductor bars each include a transition region adjacent to each end ring, and a central region disposed between the two transition regions. Each transition region includes at least one conductor bar dimension that increases proximate the end rings.
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公开(公告)号：US20180241300A1
公开(公告)日：2018-08-23
申请号：US15958220
申请日：2018-04-20
Applicant: ABB Schweiz Ag
Inventor： Harish Suryanarayana , Jiaqi Liang , Jukka Pekka Kittila , Wen Ouyang
IPC: H02M1/088 , H02M3/335 , H01F3/14 , H01F29/14 , H01F27/24 , H01F27/28 , H02J50/12 , H02M7/537 , H02M1/00 , H01F21/08
CPC classification number: H02M1/088 , H01F3/14 , H01F21/08 , H01F27/24 , H01F27/28 , H01F27/2895 , H01F29/14 , H01F2029/143 , H02J50/12 , H02M3/33507 , H02M3/33584 , H02M7/537 , H02M7/5387 , H02M2001/0003 , H02M2001/0058 , H02M2007/4815 , Y02B70/1441 , Y02B70/1491
Abstract: Unique systems, methods, techniques and apparatuses for a ZVT ZCT resonant converter with a variable resonant tank are disclosed. One exemplary embodiment is a system comprising a bidirectional resonant converter comprising an input/output terminal, a switching device coupled with the input/output terminal, a resonant circuit coupled with the switching device and including a variable inductor, an output/input terminal coupled with the resonant circuit, and a DC biasing circuit operatively coupled with the variable inductor. The variable inductor comprises a toroidal core, a first winding wound around the toroidal core and coupled with the switching device and the output/input terminal, a second core structured to overlap a portion of the toroidal core, and a second winding wound around the second core and coupled with the DC biasing circuit. The DC biasing circuit is controllable to vary the inductance of the variable inductor by saturating a portion of the toroidal core.
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公开(公告)号：US20190238034A1
公开(公告)日：2019-08-01
申请号：US16231098
申请日：2018-12-21
Applicant: ABB Schweiz AG
Inventor： Wen Ouyang , Colin Tschida
Abstract: An electrical machine includes a stator and a rotor in magnetic communication with the stator. The rotor has a cage construction, the rotor having a plurality of passages extending therethrough from a first end of the rotor to a second end of the rotor. A rotor cage has two end rings, one of the end rings disposed at each of the first end and the second end of the rotor, and having a plurality of conductor bars extending through the rotor from the first end to the second end and coupled with the end rings. The conductor bars each include a transition region adjacent to each end ring, and a central region disposed between the two transition regions. Each transition region includes at least one conductor bar dimension that increases proximate the end rings.
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公开(公告)号：US20180034396A1
公开(公告)日：2018-02-01
申请号：US15726443
申请日：2017-10-06
Applicant: ABB Schweiz AG
Inventor： Ghanshyam Shrestha , Darren Tremeling , Waqas Arshad , Wen Ouyang , Jan Westerlund
IPC: H02P9/30 , H02K3/28 , H02K19/12 , H02K11/042
CPC classification number: H02P9/302 , H02K3/20 , H02K3/28 , H02K11/042 , H02K19/12
Abstract: A synchronous machine and related systems include a stator and rotor separated by an air gap. The rotor includes a rotating DC power supply coupled to exciter windings disposed adjacent the air gap. Power from air gap harmonics, including air gap slot harmonics induce current in the exciter windings, which is rectified and supplied to the rotor field windings. In operation, a desired current level in the rotor field windings can be achieved through control of the DC power supply or superposition of harmonics into the stator winding current which induces the prescribed current in exciter windings.
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公开(公告)号：US09608551B2
公开(公告)日：2017-03-28
申请号：US14828079
申请日：2015-08-17
Applicant: ABB Schweiz AG
Inventor： Wen Ouyang , Jiaqi Liang , Li Qi
CPC classification number: H02P9/006 , H02K3/16 , H02K3/20 , H02K11/046 , H02K19/10 , H02M1/081 , H02M7/1557
Abstract: Technologies for reducing peak fault output current in a DC power generation system include a generator having a reduced damper winding and a controller to control a rectifier array to generate a DC power output. In some embodiments, the generator may have no damper windings, may have damper windings including a reduced number of damper bars, and/or may have damper windings having separated end ring mounts for each damper bar. The controller is configured to control the rectifier array so as to reduce oscillations of the DC output that may be due to the reduced damper windings. To do so, the controller is configured to generate the control signal based on an oscillation component of the DC power output. For example, the controller may generate an oscillation correction signal based on the DC power output and adjust a firing angle set point of the rectifier array based on the oscillation correction signal.
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