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公开(公告)号：US20230179064A1
公开(公告)日：2023-06-08
申请号：US17926023
申请日：2021-05-20
CPC分类号： H02K9/19 , G05D16/024
摘要： A coolant system is arranged to be driven by a prime mover of an aircraft. The coolant system comprises a fluid circuit with a fluid therein, the fluid for cooling an electricity generator located in the fluid circuit. The fluid circuit comprises: a cooling path passing via at least one cooled component of the generator; a first fluid flow source configured to deliver a first fluid flow to the cooling path; a second fluid flow source configured to generate a second fluid flow; and a valve arrangement configured to selectively direct at least a proportion of the second fluid flow away from the cooling path in dependence on a measured operational parameter of the generator. An aircraft propulsion system and an aircraft can also include the coolant system.
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公开(公告)号：US11632072B2
公开(公告)日：2023-04-18
申请号：US16981054
申请日：2019-03-15
IPC分类号： H01L29/778 , H02P27/08 , H02P27/04
摘要： The invention relates to a method for controlling a three-phase inverter (3) using a 120° control arrangement associated with a PWM-type control, the inverter (3) being driven by a controller and configured to power a permanent-magnet synchronous motor (5) of a device on board an aircraft. The motor (5) comprises a stator and a rotor that can be rotated relative to the stator when the motor (5) is powered. The inverter (3) comprises three branches (31, 32, 33), each branch comprising two switches (310, 311, 320, 321 and 330, 331) associated with a motor winding sing a 120° control arrangement of a three-phase inverter. The method is characterised in that when one switch on one branch is controlled such as to switch front the on-state to the off-state, the other switch on said branch is controlled such as to be in the on-state for a sufficient amount of time to allow the magnetic discharge of the motor winding associated with said branch.
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公开(公告)号：US20230032870A1
公开(公告)日：2023-02-02
申请号：US17757860
申请日：2020-12-22
发明人： Lionel CIMA
摘要： The invention relates to a device (D) for detecting a fault in an electrical network (1), comprising at least one electrical quipment (E) which is electrically connected to a first power conductor (C1) and to a second power conductor (C2), the electrical network (1) being provided with a common conductor (Cc). The device comprises a first measuring member (O1) of the common mode voltage present on the power conductors (C1, C2) and a second measuring member (O2) of a current flowing in the power conductors (C1, C2). The device also comprises a calculator (UP) configured to determine over a determined observation period a mixed energy (Emix) transported in the measurement region from the first variable (Vres) and the second variable (Inet). The invention also relates to an equipment, a localization system and a method for detecting a fault in an electrical network.
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公开(公告)号：US20220411082A1
公开(公告)日：2022-12-29
申请号：US17756132
申请日：2020-11-12
发明人： Philippe DELBOSC , Clement DUPAYS , Anne LIENHARDT , Benoit MICHAUD , Cyrille GAUTIER , Anthony GIMENO
摘要： The invention relates to an electric architecture for a twin-engined, hybrid thermal/electric propulsion aircraft and, for each turboshaft engine, the architecture comprises: —a high-voltage DC propulsive electric distribution network (32), —a non-propulsive electric distribution network (56) which is connected to loads of the aircraft, and—an electric distribution network (76) which is connected to loads of an electrified control system of the turboshaft engine, and wherein power supply sources are shared for these different networks.
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公开(公告)号：US11467220B2
公开(公告)日：2022-10-11
申请号：US17260885
申请日：2019-07-16
发明人： Marie Sayegh
IPC分类号： G01R31/389 , G01R31/392 , G01R31/3835 , G01R31/367 , G01R31/374 , H01M10/42
摘要： Methods for determining a maximum duration of use of a battery, include: selecting a period of use of the battery; obtaining values of factors of degradation of the battery during the period of use of the battery selected during the selection step; determining at least one indicator of ageing of the battery on the basis of the degradation factor values obtained in the step of obtaining said values; and identifying intervals of variation of the degradation factors during said period of use, each ageing indicator being associated with actual variation intervals which each have a minimum value and a maximum value of said factors used during the determination step; and a step of predicting the maximum duration of use on the basis of the variation intervals obtained in the step of identification, the at least one ageing indicator and the operating limits of the battery.
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公开(公告)号：US11387706B2
公开(公告)日：2022-07-12
申请号：US17041539
申请日：2019-03-26
发明人： Andrew Bloor
IPC分类号： H02K7/18 , H02K7/00 , H02K7/116 , H02K7/108 , B64D41/00 , F02C7/32 , F16D3/06 , F16D11/14 , F16D23/12 , F16D25/00 , F16D125/32 , F16D125/42 , F16D125/64
摘要： A generator for comprising a rotor, an inner shaft, an outer shaft, and an actuation means. The inner shaft is at least partially disposed inside the outer shaft. The inner shaft is coupled to the outer shaft by means of a translatable drive connection. The actuation means is configured to actuate the second shaft towards a retracted position. The translatable drive connection is configured to allow a transfer of torque between the first and second shafts, and enables movement of the second shaft, relative to the first shaft, along its axis of rotation from an extended position to a retracted position, such that an input portion of the second shaft can be at least partially retracted in a retraction direction towards the rotor upon activation of the actuation mechanism. A disconnect mechanism disposed on the second shaft can therefore be disconnected upon retraction of the second shaft.
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公开(公告)号：US11373928B2
公开(公告)日：2022-06-28
申请号：US16981161
申请日：2019-03-18
发明人： Sébastien Heude , Jacques Salat , Rémi Pochet
IPC分类号： H01L23/467 , F28F3/02
摘要： A power assembly that has at least two power modules that each have at least one component to be cooled, for example, an electronic chip mounted on a base from which cooling elements extend. Each power module also has a hollow body with a channel for flow of a coolant fluid Each power module is mounted on each respective body so that the cooling elements extend at least partially into said channel through an opening of the body. At least one deflector is mounted in the channel between the cooling elements of the two modules so as to force the coolant fluid to flow in the zone of the channel comprising the cooling elements.
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公开(公告)号：US20220187166A1
公开(公告)日：2022-06-16
申请号：US17603191
申请日：2020-04-10
摘要： The present invention relates to a device (1) for monitoring the degradation of rolling bearings (15a, 15b) in a rotating machine (10) comprising at least two rolling bearings (15a, 15b) each having two concentric rings (16-18) rotating relative to each other, at least one ring (17, 18) of each bearing (15a) being rotationally connected to a ring (17, 18) of another bearing (15b). The device (1) comprises a member (30) for measuring the speed of rotation (ω1) of the rotationally connected rings (17, 18), and data processing means suitable for detecting a variation in the speed of rotation (ω1) of the rotationally connected rings (17, 18), which variation is representative of degradation of a bearing (15).
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公开(公告)号：US20220140684A1
公开(公告)日：2022-05-05
申请号：US17594221
申请日：2020-04-08
申请人： Centre National De La Recherche Scientifique , Safran Electrical & Power , Safran Landing Systems
发明人： Nadhem Boubaker , Daniel Matt , Florent Nierlich
摘要： An electrical machine for use in an aircraft, including a rotor. The rotor includes a plurality of rotor poles, and a stator including a plurality of phases. Each respective phase occupies at least one elementary block and the at least one elementary block of each phase includes a set of conductors of the respective phase wound around a plurality of slots of the respective elementary block in a concentrated winding configuration. A mechanical shift angle between the respective concentrated windings of each pair of adjacent elementary blocks is greater than a rotor pole pitch. The rotor pole pitch is an angle between adjacent poles of the rotor.
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公开(公告)号：US11293498B2
公开(公告)日：2022-04-05
申请号：US16966175
申请日：2019-01-22
发明人： Paul David Flower
摘要： The present invention relates to a generator drive disconnect device, of a generator arranged to be driven by an aircraft engine. The disconnect device comprises: a drive transfer means (1) having a first, connected configuration, and a second, disconnected configuration; a disconnect biasing means (200), configured to bias the drive transfer means to the disconnected configuration; and a fluid cavity (300), configured such that provision of a pressurised fluid in the fluid cavity biases the drive transfer means to the connected configuration.
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