Rotating electric machine

A rotating electric machine comprising:

• a stator having a stator core and a slot, the stator core comprising a substantially cylindrical back core section and two adjacent teeth each projecting in a radial direction from the substantially cylindrical back core section, wherein the slot is formed between the two adjacent teeth;
• a coil wound around one of the teeth by using concentrated windings, the coil being housed in the slot;
• a projection projecting from a face of said one of the teeth to an inner section of the slot substantially in a circumferential direction;
• a stopper disposed on a lateral face of said one of the teeth between the projection and the substantially cylindrical back core section, the stopper projecting to the inner section of the slot substantially in a circumferential direction, wherein the stopper and the substantially cylindrical back core section define a coiling region through which the coil is wound, whereby the stopper supports the coil in contact with the coil;
• and
• a closing member for closing the opening of the slot to form a cooling passage in the slot, wherein the closing member is supported by a groove formed between the projection and the stopper.