| 摘要 |
<p>The heat radiating properties of the coil end sections of a stator are improved. The coil end sections (54 and 55) are arranged closely to the outer periphery sides of cooling fans (33 and 34) and the coil ends on the outer shell side are in contact with frames (11 and 12) through an insulating film (10a). In the coil end sections (54 and 55), coils ends are separated from each other except their root sections and the ventilation resistance there is made lower than that around the sections (54 and 55). Therefore, a high heat radiating property is obtained, because a cooling air mainly passes through the inside of the sections (54 and 55) and collides against almost all coil ends in the sections (54 and 55).</p> |
