COOLING ARRANGEMENT FOR AN ELECTRICAL MACHINE

摘要

The object of the invention is a cooling arrangement for an electrical machine in which the main cooling air circulation (56) within the machine is arranged using a centrifugal blower (38) in at least one of the ends of the machine, making the main cooling air circulation flow through at least an air space (18) in the machine and the outer surface of the stator. According to the invention, a circulating fan (60) is arranged in the immediate vicinity of the centrifugal fan (38) for the purpose of generating a coil end circulation (68) that circulates air at least in the area of the machine's coil ends (28).