A method and apparatus for forming a rotor for an electric machine includes serially adding layers of material to form a rotor body having a radially-extending post configured to receive a set of electrically-conductive windings, and also having a radially-extending winding end turn support formed contiguously from the rotor body.

A rotor of rotary electric machines includes a rotor core which include first and second core blocks. The first core block is formed by stacking the steel plates in a state where the steel plates are engaged by a first crimping portion and skewed in a first direction in a circumferential direction. The second core block is formed by stacking the steel plates in a state where the steel plates are engaged by a second crimping portion and skewed in a second direction facing the first direction. The first and second core blocks are connected in an axial direction in the rotor core. A hole for inserting the first crimping portion is provided in an intermediate steel plate which is part of the annular steel plates. This intermediate steel plate is provided at a block boundary position of the second core bock and is connected to the first core block.

A communication device includes a device for mechanically generating a rotational movement that includes a drive rod and a pushbutton for generating a linear movement of the drive rod and at least one gear wheel which, in the event of a linear movement of the drive rod, is set in rotational motion. The device further includes a converter module connected to the movement module that converts the rotational movement into electrical energy, an energy management module connected to the converter module that the electrical energy in line with prespecified boundary conditions, and a transmission module for transmitting information.

A three-phase induction motor includes: a stator having a stator slot having an open slot structure for inserting a formed coil; and a rotor having a rotor slot into which a conductor bar is inserted, the rotor being placed on an inner side of the stator with a clearance between the rotor and the stator. The conductor bar has a polygonal cross-sectional shape having six or more angles, and both end portions of an outer-circumference-side edge surface of the conductor bar are rounded.

A ferromagnetic lamination, a magnetic conductive member of an electrical machine, an electrical machine having the magnetic conductive member of the electrical machine, a winding structure of an electrical machine, an electrical machine having the winding structure of the electrical machine, and an electric energy and magnetic energy conversion device are provided. The magnetic conductive member of the electrical machine includes winding slots, and multiple cavities are formed on an inner wall of each of the winding slots. With the magnetic conductive member of the electrical machine, a liquid insulating medium can be effectively retained and fixed by means of a cavity structure when an insulating treatment is performed on the magnetic conductive member of the electrical machine, and a rooted intermediate elastic base is formed at a ferromagnetic boundary after the liquid insulating medium is solidified, thereby effectively preventing the insulating medium from peeling, splitting or falling off.

The invention relates to an electric machine (10) comprising a stator (11) which comprises a plurality of slots (14) and is adjacent to an air gap (17). The electric machine (10) further comprises a first material (15) having a first electrical conductivity, wherein the first material (15) in each case fills the slots (14) partially, and a second material (16) having a second electrical conductivity that is lower than the first electrical conductivity. The second material (16) exclusively fills an edge region (20) of the slots (14) and the edge region (20) is located in the slots (14) on the side facing the air gap (17). The first material (15) in the slots (14) is electrically conductively interconnected on a first side of the stator (11). The invention furthermore provides an electric machine (10) having a rotor (12).

This invention entails the use of fractal shapes as cores for electromagnets, and a concurrent shape of a fractal for the windings which surround it. The novelty of this invention lies not only with the shaping, but the advantage of such shaping, which includes producing a smaller form factor electromagnet for the same desired magnetic field strength, when compared to a conventional electromagnet. It will be appreciated that a range of devices including electromagnets, based on such fractal shaping, are additionally novel and include but are not limited to solenoid switches, relays, and other devices in which the fractal electromagnets are used to make a change in state of some device.

There is provided a rotary electric machine that ensures improving a maximum torque and a rated power factor while reducing an increase in a starting current. In view of this, the rotary electric machine includes a shaft, a rotor, and a stator. The rotor is fixed to an outer periphery of the shaft. The stator is located so as to surround an outer periphery of the rotor. The rotor includes a rotor iron core including a plurality of rotor slots located at predetermined intervals in a circumferential direction and rotor bars inserted into the rotor slots. Rotor slits communicate with outer peripheral sides of the rotor slots. The rotor slits have a width ws in a circumferential direction. The width ws is smaller than a height hs in a radial direction of the rotor slit, and when a rated current is denoted as I1, a turn ratio (primary/secondary) is denoted as Tr, and a magnetic permeability in a vacuum is denoted as μ.sub.0, a relationship of ws>μ.sub.0×I1×Tr/0.6 is met.

Embodiments involve rotors for axial flux induction rotating electric machines that use a soft magnetic composite for the rotor core. A first embodiment is directed to a rotor for a rotating electrical machine that transmits magnetic flux parallel to a shaft of the rotor. The rotor includes a rotor winding and a plurality of cores. The rotor winding consists of a solid piece of conductive material that comprises a plurality of cavities. Each core is placed in a respective cavity and comprises a highly resistive isotropic ferromagnetic powder.

Embodiments involve rotors for axial flux induction rotating electric machines that use a soft magnetic composite for the rotor core. A first embodiment is directed to a rotor for a rotating electrical machine that transmits magnetic flux parallel to a shaft of the rotor. The rotor includes a rotor winding and a plurality of cores. The rotor winding consists of a solid piece of conductive material that comprises a plurality of cavities. Each core is placed in a respective cavity and comprises a highly resistive isotropic ferromagnetic powder.