Analysis of the Steady State Performance of the Double Output Induction Generator

The steady-state performance of the variable speed constant frequency double output induction generator (VSCF-DOIG) is investigated. The generator is subjected to a strict control strategy in which the stator current is kept constant and equal to its rated value. This allows the generator to deliver rated power from its stator terminals, while from its rotor terminals a variable power output is obtained that is proportional to its rotor speed. Thus more than rated power can be extracted from the induction machine without overheating. The theoretical results of this investigation are verified experimentally.