Permanent magnet generator

Abstract

The disclosed is a permanent magnet generator, comprising: a base; a stator having an internal ventilation duct, wherein the outer circumference of a clamping ring of the stator is in interference fit with the base using shrink fitting, to form a circumferential air duct between the base and the outer circumference of a stator core; a rotor arranged inside the stator, and provided with a rotor magnetic pole having finned ventilation ducts; and a cooler arranged at a top of the base. The disclosed uses a new air-water cooling method in which cooling water circulates outside the generator, and air circulates inside the generator. The pressure head for circulation inside the generator is provided by means of the rotation of the rotor having finned ventilation ducts. A top drive fan at a top of the cooler provides kinetic energy for an internal-circulation air path.

Dependencies are inferred from the claim text.