High-voltage electric rotating machine

An electric rotating machine comprising:

• a ring-like stator core having a plurality of slot group sets formed in its circumferential directions, each continuously including:
• a first phase slot group composed of n (n≧3) first slots formed in a state adjacent to each other in said circumferential directions;
• and
• a second phase slot group composed of n (n≧3) second slots formed in a state adjacent to each other in said circumferential directions;
• a stator winding including:
• a first phase coil made by connecting n (n≧3) first partial coils in series to each other, with one end of said first phase coil being connected to an input/output terminal;
• and
• a second phase coil made by connecting n (n≧3) second partial coils in series to each other, with one end of said second phase coil being connected to an input/output terminal, the other ends of said first phase coil and said second phase coil being connected to each other;
• and
• a rotor having a plurality of magnetic poles in its circumferential directions,
• wherein each of said first partial coils includes a circling coil accommodated in the corresponding first slots and composed of first inside-slot conductor portions and outside-slot conductor portions for making connections between said first inside-slot conductor portions in the exterior of said slot group sets, with said circling coil approximately circling said stator core in said circumferential directions, and each of said second partial coils includes a circling coil accommodated in the corresponding second slots and composed of second inside-slot conductor portions and outside-slot conductor portions for making connections between said second inside-slot conductor portions in the exterior of said slot group sets, with said circling coil approximately circling said stator core in said circumferential directions, and said inside-slot conductor portions of each of said partial coils to be connected to said input/output terminal are accommodated in slots other than slots existing at end portions of each of said first and second phase slot groups in said circumferential directions.

An electric rotating machine comprising:

• a stator core including phase slot groups each composed of a plurality of slots and made along its inner circumferential surface in its circumferential directions;
• and
• a stator coil including a plurality of phase coils each made by connecting a plurality of segments each composed of inside-slot conductor portions to be accommodated in said slots and outside-slot conductor portions protruding from said slots,
• wherein each of said phase coils is formed by connecting a plurality of concentric circling coils, each generally circling said stator core along said inner circumferential surface, and said inside-slot conductor portions of said segment constituting, of said plurality of circling coils, said circling coil which has an external leader terminal are accommodated in, of said plurality of slots constituting each of said phase slot groups, said slot which does not adjoin said slot group different in phase, and an insulating member is interposed between said outside-slot portions adjacent to each other in a radial direction of said stator core.

An electric rotating machine comprising:

• a stator core including a plurality of slots disposed along its inner circumferential surface;
• and
• a stator coil including a plurality of concentric circling coils each made in a manner such that a plurality of U-shaped segments each composed of inside-slot conductor portions to be accommodated in said slots and outside-slot conductor portions protruding from said slots are connected to each other along said inner circumferential surface of said stator core to approximately circle said inner circumferential surface thereof,
• wherein an insulating member is previously interposed between, of said outside-slot conductor portions adjacent to each other in radial directions of said stator core, said outside-slot conductor portions having the relationship in which said outer circumferential side outside-slot conductor portion is disposed in a state inclined in a radial and outward direction and in a circumferential direction of said stator core with respect to an inner circumferential side protruding end portion to suppress sliding contact therebetween when said inner circumferential side outside-slot conductor portion is inclined in said radial and outward direction and in said circumferential direction.