Master of Science
Barrett, William Avon
After a generating unit loses synchronism, it is usually disconnected from the system. However, tests have shown that if an unsynchronized round rotor machine is left connected to the system, its speed will increase to some steady state asynchronous value at which the electrical power output of the machine is equal to the turbine mechanical power input. The machine output is due to induced eddy currents in the rotor surface causing the unit to act as an induction generator.
Hecht, William F., "Asynchronous operation of round rotor synchronous machines" (1970). Theses and Dissertations. 3848.