公开(公告)号：US09611835B1

公开(公告)日：2017-04-04

申请号：US14154004

申请日：2014-01-13

Applicant: Google Inc.

Inventor： Damon Vander Lind ,  Geoff Dolan ,  Corwin Hardham

IPC: F03D7/02

CPC classification number: H02P5/46 ,  F03D1/02 ,  F03D7/028 ,  F03D9/25 ,  F03D9/32 ,  F05B2240/921 ,  F05B2240/923 ,  F05B2270/20 ,  F05B2270/30 ,  H02P29/024 ,  Y02E10/723 ,  Y02E10/728

Abstract: A motor control topology relevant to airborne wind turbines and a control process for such a motor control topology is disclosed herein. A system may include an aerial vehicle that may include a plurality of propellers, a plurality of drive units coupled to the plurality of propellers, and a tether. Each drive unit may include a motor/generator and a motor controller. The plurality of drive units may include at least two pairs of drive units that include a first drive-unit pair and a second drive-unit pair. The drive units in each drive pair may be connected in parallel, and the at least two pairs of drive units may be connected in series. The drive units may be configured to operate in a first mode and operate in a second mode.

公开(公告)号：US20150183510A1

公开(公告)日：2015-07-02

申请号：US14143414

申请日：2013-12-30

Applicant: Google Inc.

Inventor： Damon Vander Lind ,  Geoff Dolan

IPC: B64C11/34 ,  B64C11/44

CPC classification number: B64C11/343 ,  F03D5/00 ,  F03D7/0224 ,  F05B2240/917 ,  F05B2240/921 ,  Y02E10/70 ,  Y02E10/723 ,  Y02E10/728

Abstract: Apparatus are disclosed that are configured to passively rotate a propeller blade from a first pitch angle to a second pitch angle. An example apparatus involves: (a) a rotor hub, (b) at least one dual-pitch support coupled to the rotor hub, wherein the dual-pitch support has a first surface, a second surface and a cavity defined there between, and (c) at least one propeller blade rotatably coupled to the rotor hub such that a blade root is disposed within the dual-pitch support's cavity, where the blade root's front face is positioned against the dual-pitch support's first surface in a first position and the blade root's back face is positioned against the dual-pitch support's second surface in a second position, and the propeller blade is oriented at a first pitch angle in the first position and is oriented at a second pitch angle in the second position.

Abstract translation: 公开的装置被配置为将螺旋桨叶片从第一俯仰角被动地旋转到第二俯仰角。 示例性装置包括：（a）转子轮毂，（b）至少一个耦合到转子轮毂的双桨距支撑件，其中双桨距支撑件具有第一表面，第二表面和在其间限定的腔， （c）至少一个螺旋桨叶片，其可旋转地联接到所述转子轮毂，使得叶片根部设置在所述双桨距支撑件的空腔内，其中所述叶片根部的前面在第一位置处抵靠所述双桨距支撑件的第一表面定位， 叶片根部的背面在第二位置处抵靠双节距支撑件的第二表面定位，并且螺旋桨叶片在第一位置以第一桨距角取向并且在第二位置以第二桨距角定向。