초록 ▼

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

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.

대표청구항 ▼

What is claimed is: 1. A power generation system equipped with a stator wound a stator winding, a rotor wound a rotor winding, a stator voltage detector for detecting voltage of the stator winding, a stator current detector for detecting the current of the stator winding, a rotor current detector f

What is claimed is: 1. A power generation system equipped with a stator wound a stator winding, a rotor wound a rotor winding, a stator voltage detector for detecting voltage of the stator winding, a stator current detector for detecting the current of the stator winding, a rotor current detector for detecting the current of the rotor winding, an active power detecting means for detecting an active power based on a voltage obtained from said stator voltage detector, a stator current obtained from said stator current detector, and a rotor current obtained from said rotor current detector, and a calculator for calculating a voltage command value of said rotor winding based on said active power obtained from said active power detecting means. 2. A power generation system equipped with a stator wound a stator winding, a rotor wound a rotor winding, a stator voltage detector for detecting voltage of the stator winding, a stator current detector for detecting the current of the stator winding, a rotor current detector for detecting the current of the rotor winding, a voltage command value calculator for calculating a voltage command value for said rotor winding based on a voltage obtained from said stator voltage detector, a stator current obtained from said stator current detector, and rotor current obtained from said rotor current detector, and a calculator for calculating a control value based on an active power detected by said stator voltage detector so as to obtain said voltage command value.