Electrical rotating machine control unit and power...

Details Electrical rotating machine control unit and power... Electrical rotating machine control unit and power...

2006-08-22

2006-08-22

Ro, Bentsu (Department: 2837)

Prime-mover dynamo plants

Turbogenerators

C290S044000, C322S059000

Reexamination Certificate

active

07095133

ABSTRACT:
Because of the necessity of resolver for detecting a rotating position, which is very expensive, and noise suppression of the rotating position signal line on a doubly-fed machine, cost increase of the generator and reduced reliability due to possible failures are inevitable. In order to solve such problem, a generation system in the present invention is equipped with an exciter that estimates the slip frequency of the doubly-fed machine from each primary current I1and voltage V1and secondary current I2and voltage V2of the doubly-fed machine and excites the secondary of the doubly-fed machine at the estimated slip frequency.

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patent: 05-284798 (1993-10-01), None

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