A captive leadscrew-type linear actuator assembly has a motor whose rotor has a rearward extending hollow bore shaft. An external nut assembly fixed to the bore shaft to rotate with rotor engages a lead screw. An anti-rotation radial support plate attaches to a front of the motor with a non-circular hole that prevents rotation of a rod or piston attached to the lead screw.

Accordingly, torque applied by the rotor through the nut to the lead screw is converted into linear motion wherein the rod or piston passes through the hole. Replaceable external components lead to greater design flexibility together with improved motion accuracy and durability.

Disclosed rotor assemblies can be configured to address differential thermal expansion in the rotor assembly during ESP motor use. Some rotor assembly embodiments can employ an improved stacking technique to minimize differential thermal expansion issues by removing certain components from the axial stack of supporting components of the rotor assembly. Alternatively, or in conjunction, some rotor assembly embodiments can use a biasing element which is configured to compensate for the differential axial thermal expansion, tolerance stack-up, and/or gravity.

An energy storage unit may include multiple kinetic cells that store kinetic energy by use of a rotating, levitating mass to provide large amounts of electrical energy therefrom. The kinetic cells may use air bearings to support the levitating mass in a frictionless state. In an embodiment, the air bearings may be aerodynamic air bearings that enable the mass to self-levitate when rotating, thereby enabling the energy storage unit to be transported without the kinetic cells being charged.

A module system is configured by positioning a first module in which a first guide device is incorporated and a second module in which a second guide device is incorporated along a guide direction. The module system includes a first positioning portion configured to position the first module and the second module in such a manner that a gap between the first guide device and the second guide device is a predetermined distance. The module system further includes a second positioning portion configured to position the first module and the second module in such a manner that a shift between an axial direction of the first guide device and an axial direction of the second guide device in a direction orthogonal to the guide direction in a plan view is equal to or less than a predetermined amount of shift.

A stator segment for an electric machine, in particular for a wind turbine generator is provided, the stator segment including a support structure, a lamination stack, and at least one fastening member for fastening the lamination stack to the support structure, wherein the lamination stack includes a plurality of lamination packets stacked between a drive end and a non-drive end, each lamination packet including a yoke having a plurality of teeth extending radially outwards on one side of the yoke and a connection structure formed at the side opposite the teeth, the connection structure being shaped to engage with the at least one fastening member in such a way that a part of the fastening member extends within the yoke. Furthermore, a stator, a wind turbine and a method of manufacturing are provided.

Methods, systems, and devices are disclosed for wind power generation. In one aspect, a wind power generator includes a support base; inductors positioned over the support base in a circular array; an annulus ring track fixed to the base support and providing a circular track around which the inductors are located; an annulus ring rotor placed on the annulus ring track and engaged to rollers in the circular track so that the annulus ring rotor can rotate relative to the an annulus ring track, in which the annulus ring rotor include separate magnets to move through the circular array of inductors to cause generation of electric currents; and a wind rotor assembly coupled to the annulus ring rotor and including wind-deflecting blades that rotate with the rotor and a hollow central interior for containing a wind vortex formed from deflecting wind by the blades to convert into the electric energy.

The present technology relates to a solid-state imaging device that can reduce the number of steps and enhance mechanical strength, a method of manufacturing the solid-state imaging device, and an electronic apparatus. The solid-state imaging device includes a laminate including a first semiconductor substrate having a pixel region and at least one second semiconductor substrate having a logic circuit, the at least one second semiconductor substrate being bonded to the first semiconductor substrate such that the first semiconductor substrate becomes an uppermost layer, and a penetration connecting portion that penetrates from the first semiconductor substrate into the second semiconductor substrate and connects a first wiring layer formed in the first semiconductor substrate to a second wiring layer formed in the second semiconductor substrate. The first wiring layer is formed with Al or Cu. The present technology is applicable, for example, to a back-surface irradiation type CMOS image sensor.

A housing for a crankshaft starter generator is designed so as to be divisible and/or a crankshaft starter generator without a housing and with a stator is designed so as to be divisible.

A rotor having rotation salient poles, a stator having fixed salient poles with a plurality of field winding sets, K control signal output sections outputting signals by detecting a plurality of sections to be formed on a cylindrical body or a disk pivoted to the rotor by a plurality of sensors installed to correspond to the fixed salient poles with the plurality of sections to be detected are opposed to a track formed in a circumferential direction, and a power-feeding control section having control circuits operating according to control signals, controlling directions and intensities of excitation currents, where the rotation salient poles are opposed to at least two salient poles, and the excitation currents are controlled with magnetic fields in the same direction occur in rotation salient poles of the salient poles advanced by at least one and magnetic fields disappear in rotation salient poles.

The invention concerns a rotatable transverse flux electrical machine (TFEM) comprising a stator portion; and a rotor portion rotatably located in respect with the stator portion, the rotor portion including an alternate sequence of magnets and concentrators radially disposed about a rotation axis thereof; the stator portion including at least one phase, the at least one phase including a plurality of cores cooperating with a coil disposed about the rotation axis, each core including a skewed pair of poles to progressively electromagnetically engage an electromagnetic field of respective cooperating concentrators. The invention is also concerned with a plurality of elements located in desired positions in the TFEM and also with a linear TFEM.