| 摘要 |
<p>PURPOSE:To widen operating range of generator by performing predictive operation of rotor temperature based on an equivalent reverse phase current and various status amounts and then controlling output, power factor, and the like of the generator based on an allowable rotor temperature, a generator output, external output command values, rotor field winding temperature, and the like. CONSTITUTION:The output controller for generator comprises means 12 for operating an equivalent reverse phase current from a reverse phase current and higher harmonic currents flowing through a generator 4, means 13 for determining a predictive temperature rise of a rotor 5 in the generator 4 due to the equivalent reverse phase current, and means 9 for operating a predictive value of rotor temperature under steady state. Furthermore, an output control means 14 predicts an actual temperature of the rotor 5 based on a predicted rotor temperature under steady state and a predicted temperature rise due to equivalent reverse phase current thus determining a generator output 19 at which the predicted rotor temperature does not exceed an allowable level. Generator output can be controlled while enlarging the operational range thereof according to the relationship between generator output 19 and field winding temperature of rotor 5 at that point of time.</p> |
