Patent application number | Description | Published |
20080252156 | ROTATING ELECTRIC MACHINE AND ROTOR THEREOF - A rotor of a rotating electric machine includes a cylindrical rotor core, a plurality of coil slots provided on an outer periphery of the rotor core along a rotor axis direction, rotor coils disposed in the coil slots by laminating a plurality of field conductors through an insulation material, a rotor wedge disposed at an opening end portion of the coil slot so as to support the rotor coil, a coil ventilation duct formed in the coil slot so as to pass through the rotor coils, the rotor wedge and the insulation material, and sub-slots provided at bottom portions of the coil slots so as to be communicated with rotor core ends and the coil ventilation ducts. In such a rotor of a rotating electric machine, the coil slot, the sub-slots and the coil ventilation duct constitute a cooling gas channel for distributing a cooling gas to thereby cool the rotor coils. A depth in a diameter direction of each sub-slot from the rotor coil end to a nearest coil ventilation duct is larger than a depth of the sub-slot at a portion near a center of the rotor core. | 10-16-2008 |
20080252168 | Rotary electro-dynamic machine and armature winding thereof - 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. | 10-16-2008 |
20080252169 | Rotary electro-dynamic machine and armature winding thereof - 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. | 10-16-2008 |
20080296989 | ROTOR OF ROTARY ELECTRIC MACHINE, AND ROTARY ELECTRONIC MACHINE - The depth from the open end of a rotor slot closest to a magnetic pole of a rotary core to a slot bottom or the bottom of a subslot provided as a coolant ventilation path on a rotor slot bottom is made less than the depth of slots at and after a second slot counted from the magnetic pole side in the direction of internal circumference, and when a shortest distance between the bottoms of the rotor slots opposed to each other through a magnetic pole or a shortest distance between the bottoms of the subslots is assumed to be a magnetic pole width of the slots, a magnetic pole width Wp | 12-04-2008 |
20090096312 | ARMATURE - In an armature, the upper and lower coil pieces in the first and third parallel circuits are located at the 1 | 04-16-2009 |
20090195105 | ARMATURE - In an armature, the upper and lower coil pieces in one half of the parallel circuits are located at the 1st, 4th, 6th, 7th, 9th, 12th and 14th positions, and the upper and lower coil pieces in remaining half of the parallel circuits are located at the 2nd, 3rd, 5th, 8th, 10th, 11th and 13th positions, when relative positions of the upper and lower coil pieces in each phase belt are indicated by positions counted in a direction separating away from a pole center. | 08-06-2009 |
20090289518 | ARMATURE WINDING OF ELECTRIC ROTATING MACHINE, STATOR OF ELECTRIC ROTATING MACHINE AND ELECTRIC ROTATING MACHINE - 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. | 11-26-2009 |
20100270875 | HIGH-VOLTAGE BUSHING OF A ROTATING ELECTRIC MACHINE - According to one embodiment, in a high-voltage bushing of a rotating electric machine, the communicating holes are inclined at least toward a circumferential direction of the hollow conductor or toward a machine external side from a direction vertical to a wall surface of the hollow conductor. | 10-28-2010 |
20100277029 | ARMATURE WINDING OF ROTATING ELECTRICAL MACHINE - There is provided a 3-phase 2-layer armature winding of a rotating electrical machine. The lead-out connection conductor connected to the output terminal is connected to a coil piece positioned at least farther than a first coil piece inside the phase belt counted from the end of the each phase belt, and a coil piece positioned at the end of the phase belt is connected to a coil piece positioned at least farther than the n-th (n is an integer larger than 1) inside the phase belt counted from the other end of the phase belt in the same parallel circuit, by a jumper wire. | 11-04-2010 |
20120242183 | ARMATURE WINDING OF ROTATING ELECTRICAL MACHINE - According to one embodiment, there is provided a 3-phase 4-pole 2-layer armature winding of a rotating electrical machine. A winding of each phase of the armature winding forms a series coil. Each series coil includes upper coil pieces and lower coil pieces which are connected each other at a connection side coil end and a counter-connection side coil end, the upper coil pieces and lower coil pieces being placed in 54 slots provided in an armature core. At least one coil piece of the upper and lower coil pieces, provided in at least one of an innermost position and an outermost position from the center of a phase belt of each phase, is replaced with a coil piece of an adjacent phase. | 09-27-2012 |