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AssigneeHitachi, Ltd.
InventorsMamoru Kimura, Motoo Futami, Masaya Ichinose, Kazumasa Ide, Kazuhiro Imaie
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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 I1 and voltage V1 and secondary current I2 and voltage V2 of the doubly-fed machine and excites the secondary of the doubly-fed machine at the estimated slip frequency.
A rotating machine control unit that controls a rotating machine equipped with a stator, stator winding laid on the stator, rotor, and rotor winding laid on the rotor;
A rotating machine control unit that controls a rotating machine equipped with a stator, stator winding laid on the stator, rotor, and rotor winding laid on the rotor;
A power generation system equipped with a rotating machine, which is equipped with a stator, stator winding laid on the stator, rotor, and rotor winding laid on the rotor, control unit that controls the rotating machine, and power source that drives the rotor;
Dependencies are inferred from the claim text.