| 摘要 |
<p>PURPOSE:To make a flow controller unnecessary by connecting a first AC to DC converter, a DC circuit and a second AC to DC converter in series between secondary and primary windings of a wound-rotor type induction generator driven by a prime mover. CONSTITUTION:A wound-rotor type induction generator 8 is driven by a water turbine 4 and between its secondary and primary windings, AC to DC converters 9 and 11 and a DC circuit 10 are connected in series. A multiplier 17 multiplies a deviation between an output of a primary voltage detector 14' and a set voltage of a primary voltage setter 16 by a slip frequency f2=f1-fr detected 14 from a primary frequency f1 of the induction generator 8 and an output signal fr of a rotational phase detector 12 and outputs the obtained value to a secondary current controller 18, while a deviation between a voltage of the DC circuit 10 and a set voltage of a DC voltage setter 21 and the primary frequency f1 are inputted to a current controller 22.</p> |
