Electric Power Generation and Distribution for Islanded or Weakly-Connected Systems

摘要

A dual-voltage power generation system includes a prime mover configured for adjustable speed operation and a doubly-fed induction generator driven by the prime mover and including a multi-phase stator winding and a multi-phase rotor winding. A first output terminal of the dual-voltage power generation system is electrically connected to the multi-phase stator winding, and a second output terminal is electrically connected to the multi-phase rotor winding. The dual-voltage power generation system further includes a first converter having an AC side connected to one of the multi-phase windings and an AC or DC side connected to one of the output terminals. The multi-phase stator winding has a different turns ratio than the multi-phase rotor winding and the first output terminal is electrically isolated from the second output terminal so that the generator has two isolated power supply outputs at different voltage levels in a first configuration.

主权项

1. A dual-voltage power generation system, comprising:
a prime mover configured for adjustable speed operation; a doubly-fed induction generator driven by the prime mover and comprising a multi-phase stator winding and a multi-phase rotor winding; a first output terminal electrically connected to the multi-phase stator winding; a second output terminal electrically connected to the multi-phase rotor winding; and a first converter having an AC side connected to one of the multi-phase windings and an AC or DC side connected to one of the output terminals, wherein the multi-phase stator winding has a different turns ratio than the multi-phase rotor winding and the first output terminal is electrically isolated from the second output terminal so that the generator has two isolated power supply outputs at different voltage levels in a first configuration.