Stator of rotary machine

A stator of a rotary machine comprising:

• a stator core having a plurality of slots provided along a circumferential direction;
• segments that are composed of rectangular wires and received in the slots;
• and
• a distributed winding wire that is formed by arranging unit coils, each of which is made up of a plurality of the segments disposed along a radial direction, in the circumferential direction of the stator core,
• wherein the unit coil is formed by connecting the segments that are alternately and concentrically arranged in the radial direction with a plurality of slot pitches that are different from each other,
• wherein the unit coils are arranged by a number of 2n (where n is a natural number of 4 or greater and is an even number) in the circumferential direction of the stator core,
• wherein the distributed winding wire is formed such that a unit coil at a start of a winding is determined as a first coil and that a unit coil at an end of the winding is determined as a 2nth coil,
• wherein two of slots for receiving the segments constituting the first coil are identical with two of slots for receiving the segments constituting each of an nth coil, an (n+1)th coil and the 2nth coil,
• wherein other two of the slots for receiving the segments constituting the first coil are identical with two of the slots for receiving the segments constituting each of a second coil, the (n+1)th coil, and a (n+2)th coil,
• wherein two of slots for receiving the segments constituting a (1+2i)th coil (where i is a natural number from 1 to (n/2−1)) are identical with two of slots for receiving the segments constituting each of a 2ith coil, an (n+2i)th coil, and an (n+1+2i)th coil,
• wherein other two of the slots for receiving the segments constituting the (1+2i)th coil are identical with two of slots for receiving the segments constituting each of a (2+2i)th coil, the (n+1+2i)th coil, and an (n+2+2i)th coil.