Motor and wind generating set

Abstract

The invention relates to a motor and a wind generating set. The motor comprises an active cooling loop and a passive cooling loop which are mutually isolated and both are communicated with an outsideenvironment, wherein the active cooling loop comprises intercommunicated cavities located at two axial ends of the motor, an air gap between a rotor and a stator of the motor, and a radial channel distributed along axial intervals of the stators, and a cooling device communicated with the outside environment is arranged in the active cooling loop; the passive cooling loop comprises an axial channel penetrating through the stator in an axial direction and an external surface of the motor. With the motor and the wind generating set provided by the invention, a problem of insufficient cooling ability of the passive cooling loop in limited layout space is solved, burden on the active cooling loop is reduced, power and self-consumption of the cooling device are reduced, consequently, volume andweight of the cooling device are reduced, and power generation efficiency of the whole machine is improved.

Description

technical field [0001] The invention relates to the technical field of cooling, in particular to a motor and a wind power generating set. Background technique [0002] With the continuous adjustment of the wind power market and national policies, wind turbines are gradually developing in the direction of high power density. Among the many cooling methods used in wind turbines, the air cooling method has been widely used in the field of wind turbine cooling due to its advantages of high reliability, easy maintenance and no pollution. According to whether the cooling medium in the cooling circuit relies on power-driven equipment to maintain the circulating flow in the cooling circuit, it can be divided into passive cooling (no power-driven equipment) and active cooling (power-driven equipment). [0003] Passive cooling in the air cooling method can simplify the structure of the wind turbine, but its cooling capacity in a limited space is insufficient. Active cooling graduall...

AI Technical Summary

Problems solved by technology

With the continuous improvement of the single unit capacity of wind turbines, the power, volume, weight and cost of active cooling equipment have all increased, and at the same time, it is more difficult in layout, installation and maintenance, and its reliability is lower

Therefore, in addition to cost advantages, wind turbines with high power density often mean greater losses and more self-consumption of active cooling equipment, making it difficult to take into account the power generation efficiency of the entire machine

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