A method for magnetizing a section of one or more permanent magnets arranged substantially in a V-shape, comprising: applying a first magnetic field such that magnetic flux lines are substantially perpendicular to a first leg of the V-shape, and removing the first magnetic field. Then the method comprises applying a second magnetic field such that magnetic flux lines are substantially perpendicular to a second leg of the V-shape, and removing the second magnetic field. Systems and methods for magnetizing sections of permanent magnet modules are also provided.

A segmented secondary part of a linear motor includes at least two segments, each having a plurality of magnets attached to a yoke plate, having alternating polarity, and having a direction of magnetization perpendicular to the yoke plate. The yoke plates include an overlapping region, in which the yoke plates of adjacent segments are superposed in the direction of magnetization but do not touch each other in the overlapping region.

An electric generator that converts mechanical energy to electrical energy includes, among other things, a first axial flow electrical machine that includes a first rotor mounted in rotation about a first axis and surrounding a first stator; a second axial flow electrical machine that includes a second rotor coaxial to the first rotor and surrounding a second stator; and first azimuthal securing means that joins together the first and second rotors so that the first and second rotors can be simultaneously set in rotation about the first axis. The electrical generator may be used as part of a wind turbine.

Embodiments described include a electrical linear motor comprising a stator and an actuation shaft movable in a linear axial direction with respect to the stator. The stator comprising a casing, an electromagnet array mounted in the casing. The electromagnet array comprising a central orifice extending in the linear axial direction within which the actuation shaft extends. The actuation shaft comprising a permanent magnet arrangement comprising a plurality of magnetic pole segments. The electromagnetic array comprising a plurality of electromagnets to generate a magnetic field that in conjunction with the magnetic field of the permanent magnet arrangement generates an electromotive force between the stator and actuation shaft having a component in the axial direction to drive the actuation shaft relative to the stator.

A modular hybrid transmission that provides for an improved support of the rotor as well as an improved cooling layout for the stator. The modular hybrid transmission has a rotating assembly and a housing assembly. The rotating assembly includes a rotor assembly, a rotor carrier hub that supports the rotor, and an input shaft. The rotor carrier is rotationally fixed on the input shaft. The housing assembly houses the rotating assembly, and includes a housing having an outer wall, a stator assembly connected to the outer wall, and a radially extending stationary wall that extends from the outer wall toward the output shaft. The stationary wall includes an axially extending wall portion that extends parallel to an outer surface of the input shaft, and a radial ball bearing supports the input shaft on this axially extending wall portion. Two stator cooling paths are channeled in the housing.

A system including a first drive motor (120) and a second drive motor (20). The drive motors (20, 120) are provided for a suction device (400) or a machine tool in the form of a hand-held power tool (200, 300) or a semi-stationary machine tool or form components of the suction device (400) or the machine tool. Each of the drive motors (20, 120) has a stator (80) with an excitation coil assembly (86) and a rotor (40, 140) with a motor shaft (30, 130) which is rotatably mounted about a rotational axis on the stator or relative to the stator (80) using a bearing assembly (24A) and which passes through a shaft through-opening (42, 142) of a laminated core (41, 141) held on a holding portion (33) of the respective motor shaft (30, 130).

A modular electric power converter includes a plurality of power converter modules, each module comprising a cell of a Modular Multilevel Converter, MMC, to provide a controlled ac output.

A method of constructing a stator for an electric machine includes forming multiple components of the stator as individual elements and assembling the components into a stator structure and mounting the stator into a machine housing. The individual elements can be individually separated from the housing and from the stator structure and replaced with corresponding elements.

A magnetic element holder (1) of an electric motor has a carrier formed as a frame structure. The carrier has at least one receiving section (2) to receive at least one magnetic element (6). The carrier is configured with a holding device (3) for positionally fixed holding the at least one magnetic element (6) inside the at least one receiving section (2). The magnetic element holder (1) is configured to be fastened to a rotor (100) of an electric motor.

A winding system for a stator of an electric machine is specified. The winding system comprises at least two first conductor segments and at least two second conductor segments, at least two half-bridges, at least one first short-circuit means and at least one second short-circuit means. Each half-bridge is connected to least one first conductor segment and one second conductor segment, each first conductor segment is connected to the first short-circuit means, and each second conductor segment is connected to the second short-circuit means. Further, an electric machine having a winding system is specified.