Control system for doubly fed induction generator

Details Control system for doubly fed induction generator Control system for doubly fed induction generator

2004-05-03

2008-08-12

Ponomarenko, Nicholas (Department: 2834)

Prime-mover dynamo plants

Electric control

Fluid-current motors

C290S055000

Reexamination Certificate

active

07411309

ABSTRACT:
A controller (28) for a doubly fed induction generator (12,20) adjusts control signals to a rotor side converter (24) and line side converter (22) to adjust rotor current when a voltage transient on a utility grid (10) occurs, so that the doubly fed induction generator can ride through the transient. The controller can also turn off the transistors of the rotor side converter (24) to reduce rotor current and/or activate a crowbar (42) to reduce the voltage of the DC link (26) connecting the converters (22, 24) when significant voltage transients occur on the grid (10). This permits continued operation of the DFIG system without disconnecting from the grid.

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