公开(公告)号：US11500005B2

公开(公告)日：2022-11-15

申请号：US17243675

申请日：2021-04-29

Applicant: X Development LLC

Inventor： Leo Francis Casey ,  Siyuan Xin ,  Peter Evans ,  Shuyu Wang ,  Raymond Daly ,  C. O. Lee Boyce, Jr. ,  Joel Fraser Atwater

IPC: G01R29/18

Abstract: Methods, systems, and apparatus, including computer programs stored on a computer-readable storage medium, for obtaining a reference phase signal that is synchronized with an alternating current (AC) phase of a multi-phase electrical power distribution system. The apparatus obtains output signals from sensors, each output signal representative of an electromagnetic emission detected by a respective sensor. The apparatus identifies, based on comparing respective phases of the output signals to the reference phase signal, a particular AC phase of the multi-phase electrical power distribution system associated with a source of the emissions. The apparatus provides an indication of the particular AC phase to a user.

公开(公告)号：US20220286032A1

公开(公告)日：2022-09-08

申请号：US17724959

申请日：2022-04-20

Applicant: X Development LLC

Inventor： Leo Francis Casey ,  Siyuan Xin

IPC: H02K16/02

Abstract: A compound motor-generator system including a first motor-generator and a second motor-generator. The first motor generator includes a stator having a set of three-phase field windings and a first rotor disposed inside and coaxial with the stator and configured to rotate relative to the stator. The second motor-generator includes a rotational stator and a second rotor coupled to a common shaft with the rotor of the first motor-generator and disposed inside and coaxial to the rotational stator. The rotational stator is configured to rotate relative to the second rotor and at a higher rotational speed than the second rotor.

公开(公告)号：US20210247433A1

公开(公告)日：2021-08-12

申请号：US17243675

申请日：2021-04-29

Applicant: X Development LLC

Inventor： Leo Francis Casey ,  Siyuan Xin ,  Peter Evans ,  Shuyu Wang ,  Raymond Daly ,  C.O. Lee Boyce, JR. ,  Joel Fraser Atwater

IPC: G01R29/18

Abstract: Methods, systems, and apparatus, including computer programs stored on a computer-readable storage medium, for obtaining a reference phase signal that is synchronized with an alternating current (AC) phase of a multi-phase electrical power distribution system. The apparatus obtains output signals from sensors, each output signal representative of an electromagnetic emission detected by a respective sensor. The apparatus identifies, based on comparing respective phases of the output signals to the reference phase signal, a particular AC phase of the multi-phase electrical power distribution system associated with a source of the emissions. The apparatus provides an indication of the particular AC phase to a user.

公开(公告)号：US09948098B1

公开(公告)日：2018-04-17

申请号：US14986251

申请日：2015-12-31

Applicant: X Development LLC

Inventor： Leo Francis Casey ,  Geoff Dolan

IPC: A63H27/04 ,  H02J3/00 ,  H02M7/68

CPC classification number: H02J5/00 ,  B64D2221/00 ,  H02J7/0027

Abstract: A power distribution system includes at least a ground power unit, an aerial vehicle, and a power station. The ground power unit is configured to convert an input AC power into DC power output, wherein the ground power unit includes at least a first bus, second bus, and a third bus, wherein the first bus is configured to operate at a first voltage level referenced to the third bus, and wherein the second bus is configured to operate at a second voltage level referenced to the third bus that is different from the first voltage level. The aerial vehicle may include a plurality of motor-generators coupled to a respective plurality of turbines, wherein the plurality of motor-generators may be configured to be energized by power received from a tether. The power station may be electrically coupled to at least the first bus, the second bus, and the tether and configured to: (i) selectively energize the tether using the first bus; and (ii) responsive to detecting a fault by at least one motor-generator of the plurality of motor-generators, selectively energize the tether using the second bus and not the first bus.