| 摘要 |
PURPOSE:To reduce a negative-phase current in a generator by controlling a variable capacity capacitor which corresponds to each of the three phases connected to a bus. CONSTITUTION:Variable capacity capacitors 11, 12 are connected to buses 7a, 7b in correspondence with each of the three phases of the buses 7a, 7b. A generator current for each phase detected by current detectors 13, 14 is inputted into a negative-phase current detector 15 to detect a negative-phase current. Then, the negative-phase current is inputted into an unbalanced quantity calculator 16 to find an unbalanced quantity in a power generation system by the magnitude of the negative-phase current. This unbalanced quantity is inputted into a capacitor capacity controlling device 17 to find a capacitor capacity required to dissolve the unbalanced quantity. According to this capacitor capacity, the variable capacity capacitors 11, 12 are controlled. |
