Abstract: An armature winding of an electric rotating machine is provided, which includes at least one armature winding bar composed of a plurality of element wire conductors, wherein the armature winding bar includes an element wire conductor configured to have twisted transposing angles of 180 degrees at one border zone and a middle zone in a winding slot and a twisted transposing angle different from 180 degrees at the other border zone of the winding slot of the element wire conductor.

Abstract: A rotary electric machine includes: a stator, a rotor and rotor fans contained in a closed type frame. The cooling gas is circulated in the frame by the rotor fans and warmed as a result of heat exchange with the stator and the rotor is cooled by a gas cooler. A heat pump is adapted to use cooling water or ambient air as high temperature heat source and liquid coolant as low temperature heat source. A liquid coolant circulation system for supplying liquid coolant to the heat exchange section of the gas cooler is provided. The liquid coolant is cooled by the heat pump and is supplied to the heat exchange section of the gas cooler by means of the coolant circulation system.

Abstract: Sub core sections are arranged at the end portions and the center portion of a stator core, and strand conductors are twisted and transposed by 360 degrees continuously toward the extending direction of winding slot. The length corresponding to transposition pitch 180 degrees of the strand conductors of the stator core is set as one core unit area, the sub core sections including portions whose space factors are different are arranged such that the sum of voltages in the strands induced in the strand conductors in the odd-numbered core unit area from one end portion of the stator core offsets the sum of voltages in the strands induced in the strand conductors in the even-numbered core unit area from the end portion of the core.

Abstract: A mica tape comprising a mica foil, a glass cloth, and an inorganic filler arranged on the glass cloth, wherein the mica tape is wound a plurality of times about an outer circumferential surface of a conductor portion of an electrical rotating machine coil so as to form an insulating layer for the coil, and the inorganic filler has a Mohs hardness falling within a range of 1 to 7 and exhibits a heat conductivity superior to those of the mica foil and the glass cloth, whereby, the inorganic filler is excellent in the heat conductivity and has a Mohs hardness not lower than that of the glass cloth contained in the mica tape, when used together with the inorganic filler.

Abstract: The invention aims to provide a highly heat conductive tape member or sheet member and a method for easily producing a highly heat conductive tape member or sheet member. The mica tape member or mica sheet member of the invention includes a mica-containing layer and a lining material, and the mica-containing layer contains scaly particles, particles having a heat conductivity of 0.5 W/mK or higher and a size of 1 ?m or smaller, and a binder.

Abstract: Sub core sections are arranged at the end portions and the center portion of a stator core, and strand conductors are twisted and transposed by 360 degrees continuously toward the extending direction of winding slot. The length corresponding to transposition pitch 180 degrees of the strand conductors of the stator core is set as one core unit area, the sub core sections including portions whose space factors are different are arranged such that the sum of voltages in the strands induced in the strand conductors in the odd-numbered core unit area from one end portion of the stator core offsets the sum of voltages in the strands induced in the strand conductors in the even-numbered core unit area from the end portion of the core.