A machine having two co-axial and relatively rotatable rotors and a coaxial stator or housing with respect to which both rotors are rotatable is provided wherein two bearing arrangements mutually support the two rotors with respect to each other and with respect to the stator or housing. One of the bearing arrangements comprises multiple support bearings angularly spaced apart with respect to the axis of rotation of the rotors relative to the stator with the support bearings each having an axle or shaft that is fixed relative to one of the rotors or the stator. Each support bearing cooperates with a raceway provided on a concentric adjacent rotor or stator. The machine may be an electromechanical machine such as a wind turbine in which rotational movement of one of the rotors relative to the other and relative to the stator generates electrical energy.

A rotor for a permanent magnet electrical machine that includes a rotor house having a rotor house yoke, the rotor house yoke including for each of plural permanent magnet units, a magnet unit contact face and at least one through hole, at least one permanent magnet unit having a rotor house contact face, a fixing material portion between the magnet unit contact face of the rotor house yoke and the rotor house contact face of the magnet unit for fixing the magnet unit to the rotor house.

A rotating electric machine integrated with a controller includes a rotating electric machine provided with a stator having three phase stator windings, a power converter configuring the control circuit of the rotating electric machine, a control board equipped with electronic components, and a plurality of modules provided with a plurality of switching elements controlled by the control circuit. At least one of the modules is provided with the switching elements controlling the two different sets of stator windings, and a detection element detecting a state of the module.

A number of flywheel units are arranged in a geometric pattern. Each of the flywheel units is enclosed in a containment unit. The containment unit includes a cylindrical tube, a cover, a bottom support, resting on the ground, on which the containment unit is mounted, and a fill medium surrounding each containment unit. The containment unit may also include a horizontal plate, mounted to the base of tube, which extends outward or radially from the base of tube a pre-determined length. In this case, the fill medium rests directly on top of the portion of the plate that extends outward from tube.

A radial flux electric machine includes a rotor configured to rotate about an axis of rotation, a plurality of electromagnetic coils, and a stator. The stator may have an annular stator ring and a plurality of core tooth-portions extending in a radial direction. The annular stator ring and the plurality of core tooth-portions may be integrally formed of a Soft Magnetic Composite (SMC). The SMC may include one or more isotropic ferromagnetic materials, a magnetic saturation induction of greater than or equal to about 1.6 Tesla, and an electrical resistivity greater than 10 micro-ohm/m.

A modularized servo case includes a hollow first barrel and a hollow second barrel, each of which has a lower opening at a bottom end thereof. The first barrel and the second barrel have a first connecting portion and a second connecting portion disposed on outer surfaces thereof, respectively. The first and second barrels can be combined together by engagement between the first connecting portion and the second connecting portion. In this way, the different inner components required for the first and second barrels can be separately installed beforehand by modularization, and then the first and second barrels can be assembled. Therefore, the assembly is preferably convenient and the inner components can be assembled simultaneously, thus enhancing the whole production capacity and efficiency and facilitating the disassembly procedure in the later repair and maintenance operation.

The invention relates to a power supply unit for supplying multiple conductor portions (3) of a stator winding of an electric machine which are inserted in respective slots (2), wherein the power supply unit is configured to supply a first conductor portion and a second conductor portion with at least one different operating parameter of a respective current function and/or the power supply unit is configured to supply a conductor portion with at least two superimposed current functions, which in each case have at least one different operating parameter. Furthermore, the invention relates to an electric machine having such a power supply unit.

A storage assembly includes a first storage body and a second storage body. The first storage body includes a first opening, a first engaging portion, and a first fitting portion. The second storage body includes: a second opening, a second engaging portion, and a second fitting portion. The first opening and the second opening are connected via a sealing. The first engaging portion includes: an extension portion extending from the first storage body toward the second engaging portion across a connection portion of the first opening and the second opening; and a hanging portion provided at a tip portion of the extension portion and configured to hang on the second engaging portion. The first fitting portion is formed as a linear projection inside the extension portion, and the second fitting portion is formed on an outer surface of the second storage body as a groove.

An electric motor is disclosed having a detachable stator tooth. In some implementations, coil windings of the electric motor may be coupled to one or more drivers independently of other coil windings. A method of repairing and manufacturing an electric motor having a detachable stator tooth is also disclosed.

A method for producing a control device for mechanically controlling a component. The control device may have a device housing including a motor accommodating space in which an electric motor is arranged. The electric motor may include a motor housing having a stator and a rotor, the rotor including a rotor shaft. The method may include selecting an electric motor from a plurality of electric motors each suitable for a specified application. Each of the plurality of electric motors may have a different respective axial motor length and may have a same respective motor cross section. Further, the method may include adapting the motor accommodating space to the respective axial motor length of the selected electric motor.