Foley & Lardner LLP
Rotating electrical machine and stator thereof
According to an embodiment, radially extending inner spacers are provided in a stator core at a distance from each other in the circumferential direction at intervals between a prescribed number of stacked magnetic steel plates, and ventilation ducts for cooling gas flow are formed in the radial direction. The perimeter of each ventilation duct is defined by the inner spacers and a magnetic steel plate separated by the inner spacers. The cooling gas, which flows in the rotation direction, is split laterally to both sides of a rotor coil and directed toward the outer circumference. Portions of the shoulder parts of a wedge are cut off such that the width of the shoulder parts of the wedge at positions corresponding to the ventilation ducts matches the slot width.
Kabushiki Kaisha Toshiba
H H H
H02K H02K H02K
additional inventional inventional
Yasuo Masafumi Yuuichiro Koji
Kabata Fujita Gunji Matsuyama