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公开(公告)号：US20240413680A1
公开(公告)日：2024-12-12
申请号：US18330412
申请日：2023-06-07
Applicant: Hamilton Sundstrand Corporation
Inventor： Jeffrey P. King , Zaffir A. Chaudhry , Andrzej E. Kuczek , Wenping Zhao , Huan Zhang , Jagadeesh K. Tangudu
Abstract: A rotor is provided and includes a central hub, an outer ring assembly comprising magnetic elements and back-to-back curved webs radially interposed between the central hub and the outer ring assembly.
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公开(公告)号：US20240171052A1
公开(公告)日：2024-05-23
申请号：US17989277
申请日：2022-11-17
Applicant: Hamilton Sundstrand Corporation
Inventor： Zhentao Stephen Du , Andrzej E. Kuczek , Jagadeesh K. Tangudu
CPC classification number: H02K16/02 , B64D27/24 , H02K1/28 , B64D2221/00
Abstract: Aircraft and aircraft electric motors include a rotor assembly comprising a plurality of magnets arranged on a magnet support, an output shaft operably coupled to the rotor assembly, and a stator comprising a support structure and at least one winding wrapped about a plurality of stator teeth, the stator configured to generate an electromagnetic field to cause rotation of the rotor assembly. The magnets are configured in sets arranged circumferentially about the rotor assembly, with each set having a cut-out notch at opposite ends of each set in the circumferential direction and wherein the cut-out notch is at least partially formed in an in-pole magnetization magnet having a radial orientation magnetization.
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公开(公告)号：US20230326648A1
公开(公告)日：2023-10-12
申请号：US17714292
申请日：2022-04-06
Applicant: Hamilton Sundstrand Corporation
Inventor： Stephen H. Taylor , Yasmin Khakpour , Jagadeesh K. Tangudu , Lei Xing
CPC classification number: H01F27/008 , H01F27/24
Abstract: A transformer bobbin includes a first bobbin member including a first end defining a first opening, a second end defining a second opening, an inner surface defining the first opening and an outer surface. The inner surface includes a first plurality of fins that extend between the first end and the second end. A second bobbin member is disposed about and spaced from the first bobbin member. The second bobbin member includes a first end portion defining a first opening portion, a second end portion, an inner surface portion and an outer surface portion. One of the outer surface of the first bobbin member and the outer surface portion of the second bobbin member includes a second plurality of fins that extend between the first end portion and the second end portion.
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公开(公告)号：US12261491B2
公开(公告)日：2025-03-25
申请号：US17718929
申请日：2022-04-12
Applicant: Hamilton Sundstrand Corporation
Inventor： Jagadeesh K. Tangudu , Beata I. Wawrzyniak
Abstract: Aircraft electric motors include a rotor comprising a plurality of magnet segments arranged on a frame of the rotor, the rotor defining an internal cavity radially inward from the plurality of magnet segments, an output shaft operably coupled to the rotor, a stator comprising at least one winding wrapped about a support structure, the stator arranged within the internal cavity of the rotor, and a stator support configured to supply at least a current into the at least one winding, wherein the support structure is structurally supported on the stator support. The magnet segments are symmetrically arranged about the stator to balance axial forces applied to the rotor when a current is induced within the at least one winding and maintain a gap between the plurality of magnet segments and the at least one winding.
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公开(公告)号：US20240097593A1
公开(公告)日：2024-03-21
申请号：US18352343
申请日：2023-07-14
Applicant: Hamilton Sundstrand Corporation
Inventor： Boran Fan , Jagadeesh K. Tangudu , Rolando Burgos , Vladimir Blasko , Dong Dong
CPC classification number: H02P27/06 , H02K11/33 , H02P29/50 , H02K2213/03
Abstract: A multi-three-phase motor drive system includes a power distribution network, a motor drive unit, and a motor network. The power distribution network includes a partitioned direct current (DC) link connected between a positive voltage rail and a negative voltage rail. A connection between the positive voltage rail and a mid-point node defines an upper portion of the partitioned DC link and a connection between negative voltage rail and the mid-point node defines a lower portion of the partitioned DC link. The motor drive unit includes a plurality of inverter units, and the motor network includes a plurality of motor windings which are each connected to a respective inverter unit. A first group of the inverter units is connected in parallel with the upper portion of the portioned DC link, and a second group of the inverter units is connected in parallel with the lower portion of the partitioned DC link.
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Patent Agency Ranking
公开(公告)号：US12283903B2
公开(公告)日：2025-04-22
申请号：US18352343
申请日：2023-07-14
Applicant: Hamilton Sundstrand Corporation
Inventor： Boran Fan , Jagadeesh K. Tangudu , Rolando Burgos , Vladimir Blasko , Dong Dong
Abstract: A multi-three-phase motor drive system includes a power distribution network, a motor drive unit, and a motor network. The power distribution network includes a partitioned direct current (DC) link connected between a positive voltage rail and a negative voltage rail. A connection between the positive voltage rail and a mid-point node defines an upper portion of the partitioned DC link and a connection between negative voltage rail and the mid-point node defines a lower portion of the partitioned DC link. The motor drive unit includes a plurality of inverter units, and the motor network includes a plurality of motor windings which are each connected to a respective inverter unit. A first group of the inverter units is connected in parallel with the upper portion of the portioned DC link, and a second group of the inverter units is connected in parallel with the lower portion of the partitioned DC link.
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公开(公告)号：US20250079920A1
公开(公告)日：2025-03-06
申请号：US18615537
申请日：2024-03-25
Applicant: Hamilton Sundstrand Corporation
Inventor： Jagadeesh K. Tangudu , Andreas C. Koenig , Suman Dwari , Todd A. Spierling
Abstract: Aircraft electric machines are described. The aircraft electric machines include a laminated rotor operably connected to a shaft, the laminated rotor comprising a plurality of rotor teeth and air gaps defined between adjacent rotor teeth about a circumference of the laminated rotor, a modular stator assembly comprising at least one stator segment having a winding wrapped about a center body of the at least one stator segment, a cooling element arranged at least one of adjacent to or within the winding, and at least one power module system comprising an active rectifier and wherein the laminated rotor and modular stator are arranged as a switched reluctance rotor-stator assembly.
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公开(公告)号：US20240195233A1
公开(公告)日：2024-06-13
申请号：US18486912
申请日：2023-10-13
Inventor： Jagadeesh K. Tangudu , Jun Cui
IPC: H02K1/02 , B64D27/24 , H02K1/16 , H02K1/2786
CPC classification number: H02K1/02 , B64D27/24 , H02K1/16 , H02K1/2786
Abstract: Aircraft electric motors include a rotor having a plurality of magnet segments arranged on a frame of the rotor, the rotor defining an internal cavity radially inward from the plurality of magnet segments, an output shaft operably coupled to the rotor, and a stator having a support structure and at least one winding wrapped about a plurality of stator teeth. The stator teeth include inner teeth arranged on a radially inward side of the support structure and outer teeth arranged on a radially outward side of the support structure and the stator is arranged within the internal cavity of the rotor. At least one of the inner teeth, the outer teeth, or the support structure is formed from a non-magnetic material with embedded magnetic wires.
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公开(公告)号：US20230361638A1
公开(公告)日：2023-11-09
申请号：US17739495
申请日：2022-05-09
Applicant: Hamilton Sundstrand Corporation
Inventor： Jagadeesh K. Tangudu , Joseph K. Coldwate , Zhentao Stephen Du
IPC: H02K1/2795 , H02K1/16 , H02K7/00 , B64D27/24
CPC classification number: H02K1/2795 , H02K1/16 , H02K7/003 , B64D27/24
Abstract: Aircraft electric motors include a rotor having magnet segments arranged on a frame of the rotor, the rotor defining an internal cavity radially inward from the magnet segments. An output shaft is operably coupled to the rotor and a stator, having a yoke and at least one winding wrapped about stator teeth, is arranged within the internal cavity of the rotor. The stator defines a radial span as a distance from the yoke to a radial outward edge of the at least one winding. The plurality of stator teeth have at least one tooth formed from a magnetic material with the tooth having an engagement end configured to engaged with the yoke, a distal end opposite the engagement end, and a shaped end at the distal end of the tooth, with a portion of the tooth at the shaped end being closer to the yoke than the radial span.
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公开(公告)号：US12294246B2
公开(公告)日：2025-05-06
申请号：US17739495
申请日：2022-05-09
Applicant: Hamilton Sundstrand Corporation
Inventor： Jagadeesh K. Tangudu , Joseph K. Coldwate , Zhentao Stephen Du
IPC: H02K1/2795 , B64D27/24 , H02K1/16 , H02K7/00
Abstract: Aircraft electric motors include a rotor having magnet segments arranged on a frame of the rotor, the rotor defining an internal cavity radially inward from the magnet segments. An output shaft is operably coupled to the rotor and a stator, having a yoke and at least one winding wrapped about stator teeth, is arranged within the internal cavity of the rotor. The stator defines a radial span as a distance from the yoke to a radial outward edge of the at least one winding. The plurality of stator teeth have at least one tooth formed from a magnetic material with the tooth having an engagement end configured to engaged with the yoke, a distal end opposite the engagement end, and a shaped end at the distal end of the tooth, with a portion of the tooth at the shaped end being closer to the yoke than the radial span.
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