Title :
Large air-cooled turbogenerators: design features and operating experience
Author :
Joho, Reinhard ; Zimmerli, Beat
Author_Institution :
ABB Power Gen. Ltd., Baden, Switzerland
Abstract :
180 air-cooled units of 150 MVA and more with over 400 accumulated operating years are in operation worldwide. Three units of 300 MVA have been commissioned. Efficiencies of up to 98.8% are witnessed by Lloyds. A clear total cost benefit over hydrogen technology is demonstrated. There is a potential for unit ratings up to 500 MVA. In this paper the cooling principles and design features are discussed
Keywords :
cooling; turbogenerators; 150 to 300 MVA; 98.8 percent; air-cooled turbogenerators; cooling principles; cost benefit; design features; hydrogen cooling; operating experience; Cooling; Copper; Hydrogen; Insulation; Rotors; Stator cores; Temperature; Turbines; Turbogenerators; Voltage;
Conference_Titel :
Electric Machines and Drives, 1999. International Conference IEMD '99
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5293-9
DOI :
10.1109/IEMDC.1999.769233
