| 摘要 |
<p>PURPOSE:To control modes of both a V/F control unit and an exciter field current control unit can be translated to each other smoothly by providing a circuit which gives commands to an exciter voltage regulator by selecting lower one of the control signals of both the V/F control unit and the exciter field current control unit. CONSTITUTION:An adder 15 outputs the deviation between the output of a generator V/f setting unit 13 and that of a V/F detector 14, while an adder 24 outputs deviation between the output of an exciter field current setting unit 19 and that of a current detector 17. The outputs of the adders 15, 24 are given to an exciter voltage setting unit 10 through a lower deviation selective circuit 25. A voltage control unit 11 controls the excitation of an exciter 2 in response to the deviation of the output between the exciter voltage setting unit 10 and a voltage detector 8. In this way it becomes possible to translate the control models smoothly between the generator V/f control and the exciter field current control without giving useless fluctuation to a generator 1.</p> |
