Permanent-magnet direct-drive wind power generator, system and stator thereof

A stator of a permanent magnet direct-drive wind power generator, comprising

• a stator support,
• a stator iron core arranged on an outer peripheral wall of the stator support,
• a blade side tooth pressing plate arranged on an axial end face at a blade side of the stator iron core, and
• a tower side tooth pressing plate arranged on an axial end face at a tower side of the stator iron core, wherein,
• at least one first air hole is provided in the outer peripheral wall of the stator support, at least one second air hole is provided in the blade side tooth pressing plate, and at least one third air hole is provided in the tower side tooth pressing plate, and
• the stator further comprises at least one air flow passage via which the first air hole, the second air hole and the third air hole are in communication with each other, and the air flow passage passes through an interior of the stator iron core.

A stator of a permanent magnet direct-drive wind power generator, comprising

• a stator support,
• a stator iron core arranged around an outer peripheral wall of the stator support, and
• a tower side tooth pressing plate arranged on an axial end face at a tower side of the stator iron core, wherein,
• at least one first air hole is provided in the outer peripheral wall of the stator support, and at least one third air hole is provided in the tower side tooth pressing plate, and
• the stator further comprises at least one air flow passage via which the first air hole and the third air hole are in communication with each other, and the air flow passage passes through the interior of the stator iron core.