A method and device for forming corona shielding on a winding bar for high-voltage machines has end corona shielding in a first section and outer corona shielding in a second section that adjoins the first section. The method includes providing a first composition, including a carrier material and a first filler therein and a first electrical resistance; providing a second composition, including the same carrier material and a second filler therein and a second electrical resistance, wherein the first and second fillers contain an identical dopable semiconductor material, doping of which determines electrical resistance of the first and second fillers, and wherein the second resistance differs from the first resistance; applying the first composition in the first section to form the end corona shielding; and applying the second composition in the second section to form the outer corona shielding.

A method and device for forming corona shielding on a winding bar for high-voltage machines has end corona shielding in a first section and outer corona shielding in a second section that adjoins the first section. The method includes providing a first composition, including a carrier material and a first filler therein and a first electrical resistance; providing a second composition, including the same carrier material and a second filler therein and a second electrical resistance, wherein the first and second fillers contain an identical dopable semiconductor material, doping of which determines electrical resistance of the first and second fillers, and wherein the second resistance differs from the first resistance; applying the first composition in the first section to form the end corona shielding; and applying the second composition in the second section to form the outer corona shielding.

An electromagnetic machine for generating force is provided. The electromagnetic machine includes a magnet having opposing sides extending along a longitudinal axis. The electromagnetic machine includes a pair of ferromagnetic bodies respectively extending along the opposing sides of the magnet, and along the longitudinal axis, each of the ferromagnetic bodies comprising: a back-iron portion; and a pole portion extending from the back-iron portion. The magnet and the ferromagnetic bodies include reciprocal retention devices at the opposing sides along the longitudinal axis. The electromagnetic machine includes electrical windings around respective pole portions of the ferromagnetic bodies, the electrical windings around the respective pole portions being independently controllable. The electromagnetic machine includes at least one cold plate configured to thermally isolate the magnet from the electrical windings.

A air pressure adjuster includes: a rotary electric machine; a casing housing the rotary electric machine hermetically; and an in-casing air pressure adjuster for adjusting an internal air pressure using a drive force generated a difference between the internal air pressure and an outer pressure of the casing. The in-casing air pressure adjuster discharges the air from the inside of the casing to the outside of the casing when the internal air pressure is higher than the external air pressure by a first predetermined value.

A air pressure adjuster includes: a rotary electric machine; a casing housing the rotary electric machine hermetically; and an in-casing air pressure adjuster for adjusting an internal air pressure using a drive force generated a difference between the internal air pressure and an outer pressure of the casing. The in-casing air pressure adjuster discharges the air from the inside of the casing to the outside of the casing when the internal air pressure is higher than the external air pressure by a first predetermined value.

An electrical insulation mixture for forming a layer on a conductor surface is provided. The mixture includes an UV curable thermoset resin and a filler. The filler includes UV transparent platelets made of a platelet material. UV transparency is given for light in a wavelength range between 300 and 420 nm. Furthermore, a method for electrically insulating a metallic conductor is provided. The method includes obtaining the electrical insulation mixture, forming a jacketing on a surface of the metallic conductor using the mixture thus obtained, and exposing the mixture to ultraviolet radiation to cure the mixture, thus forming, from the jacketing, an electrical insulation layer on the surface of the metallic conductor. A metallic conductor with an electrical insulation layer can be obtained by using the electrical insulation mixture.

The present disclosure relates to electrical machines. The teachings thereof may be embodied in insulation systems for electrical machines, more particularly in the high-voltage range, for example, in an insulation system for electrical machines including: an insulator comprising a porous insulating material; an impregnator comprising a catalytically or thermally curable resin material having oxirane functionalities, or a mixture of different reactive resin materials having oxirane functionalities; and at least one thermally activatable or encapsulated hardener material.

The present disclosure relates to electrical machines. The teachings thereof may be embodied in a corona shielding system for an electrical machine. For example, a corona shielding system may include: an outer corona shield and an overhang corona shielding. The outer corona shielding and the overhang corona shielding may comprise a first corona shielding material having a nonlinear field strength-dependent electrical resistance.

The present disclosure relates to electrical machines. The teachings thereof may be embodied in a corona shielding system for an electrical machine. For example, a corona shielding system may include: an outer corona shield and an overhang corona shielding. The outer corona shielding and the overhang corona shielding may comprise a first corona shielding material having a nonlinear field strength-dependent electrical resistance.

An article is presented. The article includes one or more ceramic insulators having a plurality of recesses including a first portion having a first set of recesses of the plurality of recesses and a second portion having a second set of recesses of the plurality of recesses. At least a portion of a first conductor and at least a portion of a first cooling channel are overlappingly disposed in a recess of the first set of recesses. At least a portion of a second conductor and at least a portion of a second cooling channel are disposed in at least one recess of the second set of recesses wherein the at least a portion of the second cooling channel offsets from the at least a portion of the second conductor. A system including the article is also presented.