Method for cooling a generator
View Patent ↗A method for cooling a generator using cooling air flowing through the generator, wherein a density of the cooling air when the generator is idling and running passively at a mains frequency of a mains network to which the generator is connected is reduced relative to a density of the cooling air when the generator is operating under load.
1. A method for cooling a generator using cooling air flowing through the generator, comprising:
reducing a density of a cooling air in idle mode of the generator, in which the generator rotates passively at a grid frequency of a grid to which the generator is connected, relative to the density of the cooling air in load mode of the generator;
wherein a density of a cooling medium in idle mode is reduced by increasing a moisture of the cooling medium,
wherein the density of the cooling air in idle mode is reduced by at least partially replacing the cooling air with nitrogen;
wherein the density of the cooling air in idle mode is reduced by at least partially replacing the cooling air with hydrogen below a lower ignition threshold.
2. The method as claimed in claim 1 ,
wherein the density of the cooling air in idle mode is reduced by increasing a recooling temperature which is used to recool the cooling air.
3. The method as claimed in claim 2 ,
wherein the density of the cooling air in idle mode is reduced by creating a reduced pressure inside a housing of the generator.
4. The method as claimed in claim 1 ,
wherein the density of the cooling air in idle mode is reduced by creating a reduced pressure inside a housing of the generator.