New water-cooled turbogenerators in the 400-MVA plus power class

摘要

Highest possible availability and low maintenance were the development goals for a new series of turbogenerators with water-cooled stator and rotor windings which ABB Generation has now brought to the market. Water, like air, is a trouble-free and efficient coolant, and allows reliable and rugged generators to be built. The seals between the rotating and stationary parts are simpler than in the case of hydrogen-cooled generators. Also, fewer auxiliary systems are needed.