An electromagnetic actuator includes a coil assembly including a coil; a magnet assembly including a first and a second magnet unit, each magnet unit including a magnetic yoke and a plurality of permanent magnets mounted to the magnetic yoke, the first and second magnet unit forming a magnetic circuit for receiving the coil assembly and, upon energizing the coil, generating a force in a first direction; and a holder for holding the magnet units, wherein a weight ratio of the magnet assembly over the coil assembly is smaller than the weight ratio of the magnet assembly over the coil assembly when the ratio of force over electrical power is maximized.

An electric machine includes a housing for holding a cooling device, wherein the housing is provided for respectively holding a cooling device of different size, where the electric machine also includes an air cooling section that includes a first air guidance element for guiding the cooling air and includes a first positioning element for positioning the first air guidance element at a multiplicity of positions, where brackets are provided for positioning elements and the brackets can be oriented in an axial direction of the electric machine such that housings of similar size can be used for electric machines.

An electric drive includes a rotor and a stator in toothed-coil technology, wherein the stator has a number of individual tooth modules. A respective individual tooth module has a stator winding which is wound around an associated tooth, a control device which is designed to generate an activation signal for the stator winding, and a shielding device which surrounds the stator winding and the control device.

In some embodiments, an electric motor may include a plurality of magnetic circuit modules, where each magnetic circuit module includes a rotor having a first magnetic array and a second magnetic array extending substantially parallel with one another and spaced apart by a channel. The electric motor may further include a stator including a coil assembly configured to fit within the channel and to provide an electromagnetic force within the channel to accelerate the magnetic arrays.

Electrical machine apparatus comprising: a first member comprising a ferromagnetic material and defining a first aperture arranged to provide a coolant to cool an electrical conductor.

Electric machine comprises a rotor and a stator surrounding the rotor. The stator comprises a cylindrical stator core having a laminated structure and slots for a stator winding and a stator frame surrounding the stator core. The stator core is attached with fastening brackets by means of fastening means based on a compression joint to the stator frame. The stator frame comprises two opposite end constructions and a frame plate located between the end constructions. Back beams extending in the axial direction of the stator are attached to an outer surface of the stator core. Each fastening bracket comprises two perpendicular branches, a first branch attached to the stator frame plate and a second branch attached to the back beam by fastening means based on a compression joint. The fastening means passes through openings in each branch. The openings are allow a small movement of the fastening means in the openings so that the stator core can be centralized in a radial direction and in an axial direction in relation to the stator frame before the fastening means are tightened in order to lock the stator core to the stator frame.

To provide an AC generator equipped with a voltage regulation device capable of cost reduction in terms of both of manufacture and device, a voltage regulation device for the AC generator, and a method for manufacturing the same. In an AC generator equipped with a voltage regulation device 16 for regulating the magnitude of output voltage, the voltage regulation device 16 is composed of: a molded body 15 having a plurality of insert conductors; and a circuit component 14 mounted on the molded body 15 and electrically connected to the insert conductors, and in the voltage regulation device 16, an extended-portion-for-jumper 19ae is integrally provided in a part of the insert conductor 19a.

A power generator assembly having a housing with a hollow chamber or shell. Received within the shell is a canister having generator sets. The housing and generators are mounted to a rotatable shaft that is connected to an anchor stand. The anchor stand has a lever with a counter weight that resists anchor torque.

A winding system for a stator and/or a rotor of an electric machine is disclosed. The winding system comprises several conductor sections, two annular conductors (+, ) on a first side of the winding system, to which the conductor sections are coupled by means of half bridges, and at least one half bridge on an opposite side of the winding system, to which at least one conductor section is connected.

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.