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Patent Searching and Data


Title:
CONTROL SYSTEM FOR DOUBLY FED INDUCTION GENERATOR
Document Type and Number:
WIPO Patent Application WO2004098261
Kind Code:
A3
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.

Inventors:
HUDSON RAYMOND M (US)
Application Number:
US2004013561W
Publication Date:
December 22, 2005
Filing Date:
May 03, 2004
Export Citation:
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Assignee:
XANTREX TECHNOLOGY INC.
HUDSON, RAYMOND, M.
International Classes:
H02P7/06; H02P9/00; H02P9/04; H02P9/10; H02P9/46; H02P11/00; (IPC1-7): H02P7/06; H02P11/00; H02P9/00; H02P9/04
Domestic Patent References:
WO2004098261A22004-11-18
Foreign References:
US6856040B22005-02-15
US6856039B22005-02-15
US6856038B22005-02-15
US6847128B22005-01-25
US6784634B22004-08-31
US6700214B22004-03-02
US6566764B22003-05-20
US6281595B12001-08-28
US6072302A2000-06-06
US5798631A1998-08-25
US5239251A1993-08-24
US5028804A1991-07-02
US4994684A1991-02-19
US4982147A1991-01-01
US4366387A1982-12-28
Other References:
See also references of EP 1625457A4
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