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公开(公告)号：US20230304895A1
公开(公告)日：2023-09-28
申请号：US18125717
申请日：2023-03-23
IPC分类号： G01M15/14 , G01M13/028
CPC分类号： G01M15/14 , G01M13/028
摘要： A system includes a machine that is operable in a defined condition described by at least one operating parameter, and a controller. The controller is configured to control at least one actuator so as to exert an excitation of at least a part of the system and/or detect a predetermined excitation of at least a part of the system. The excitation is superimposed to the defined condition of the machine. The system also includes at least one sensor configured to measure at least one response indicator of a response of at least a part of the system to the excitation. The system includes a diagnosis system configured to receive the at least one measured response indicator and the at least one operating parameter.
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公开(公告)号：US20240088729A1
公开(公告)日：2024-03-14
申请号：US18210210
申请日：2023-06-15
IPC分类号： H02K1/04 , C09D5/00 , C09D127/18 , H02K21/24
CPC分类号： H02K1/04 , B64D27/30 , C09D5/00 , C09D127/18 , H02K21/24 , H02K2201/03
摘要： An electric machine, (e.g., for an aircraft), includes a stator and a rotor that is rotatable relative to the stator, wherein a gap by way of which magnetic forces act between the stator and the rotor is configured between a gap face of the stator and a gap face of the rotor. The electric machine further includes a bearing installation by which the rotor is mounted so as to be rotatable relative to the stator in such a manner that the gap face of the rotor in a normal operation of the electric machine is spaced apart from the gap face of the stator. The stator and/or the rotor have/has a friction-reducing layer that at least partially forms the respective gap face and, along which the respective other gap face, is configured to slide in the event of a defect.
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3.发明公开公开(公告)号：US20240243646A1
公开(公告)日：2024-07-18
申请号：US18201590
申请日：2023-05-24
摘要： A vertical take-off and landing (VTOL) aircraft includes at least one electrical propulsion unit (EPU). An EPU of the at least one EPU includes a propeller or a fan and a transverse flux electric motor. The electric motor includes a stator having coils configured to carry current and a rotor arranged to interact with the stator, such that a torque for driving rotation of the propeller or the fan is generated. The rotor is configured to supply a flow of air to the coils, such that heat is removed from the coils. The coils are directly exposed to the flow of air, such that heat is exchanged directly from the coils to the flow of air. Each coil includes an effective cooling surface area directly exposed to the flow of air. An effective cooling surface area is at least 20% of a total surface area of the respective coil.
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公开(公告)号：US20230307974A1
公开(公告)日：2023-09-28
申请号：US18032560
申请日：2021-10-05
CPC分类号： H02K3/28 , H02K16/02 , H02K2213/06
摘要： The invention relates to an electric machine with a protection against inter-turn short circuits, comprising a rotor with one or more permanent magnets and a stator which comprises a plurality of stator poles that are concentrically arranged about the rotor and a plurality of grooves that space the stator poles apart in the circumferential direction, wherein a yoke is arranged in each groove, said yoke forming a bridge-like connection between the stator poles in the circumferential direction, and at least one yoke winding is arranged on each yoke, said yoke winding forming an electric coil. The coil axis direction corresponds to the circumferential direction, and each pair of adjacent yoke windings surrounds a stator pole.
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公开(公告)号：US20240250594A1
公开(公告)日：2024-07-25
申请号：US18491033
申请日：2023-10-20
CPC分类号： H02K21/24 , B64C29/0033 , B64D27/24 , H02K1/145 , H02K3/24 , H02K2201/12 , H02K2213/03
摘要： A transverse flux electrical machine for coupling to a rotating shaft of a propulsor of an aircraft is provided. The transverse flux electrical machine includes a rotor having a plurality of circumferentially distributed permanent magnets that form a number, NP, of rotor poles, wherein the rotor poles have a pole pitch angle, Pθ, equal to 2π divided by the number of rotor poles, NP. The transverse flux electrical machine further includes a stator having a plurality of current-carrying coils configured to interact with the rotor poles of the rotor to produce a torque. The transverse flux electrical machine further includes an air gap separating the rotor from the stator by an air gap distance, GAir, wherein a machine parameter, Υ, defined as: Υ=Pθ×GAir is less than 100 micro radian-meters.
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公开(公告)号：US20240239499A1
公开(公告)日：2024-07-18
申请号：US18491076
申请日：2023-10-20
CPC分类号： B64D27/24 , H02K1/274 , H02K7/006 , H02K2201/12
摘要： An electrical machine for an aircraft electrical power system includes a stator having current-carrying coils and flux guiding stator iron defining one or more stator slots that house the current-carrying coils. The electrical machine further includes a rotor having a plurality of permanent magnets configured to interact with the stator to produce a torque. The electrical machine has an active parts mass, mact, which is a cumulated mass of components of the electrical machine that contribute to producing the torque. The electrical machine is configured to produce a peak rated torque, τpeak. The electrical machine has a slot current density, Jslot,peak, when producing the peak rated torque, τpeak. A value of a machine parameter, Λ, defined as: Λ=τpeak/(mact×Jslot,peak) is greater than or equal to 5 μNm3 kg−1A−1.
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公开(公告)号：US20230322403A1
公开(公告)日：2023-10-12
申请号：US18124712
申请日：2023-03-22
CPC分类号： B64D45/00 , B64D31/00 , B64F5/60 , B64C29/0008 , B64D2045/0085
摘要： A system includes a frame and a plurality of machines mounted on the frame, wherein each machine of the plurality of machines includes an actuator, and wherein each machine is configured to operate in a defined condition. The system further includes at least one controller configured to control the actuators so as to exert an excitation of each machine of the plurality of machines. The system further includes at least one sensor configured to measure at least one response indicator of a response of the system to the excitations of the plurality of machines. The system further includes a diagnosis system configured to receive the at least one measured response indicator.
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