| 摘要 |
PROBLEM TO BE SOLVED: To increase a power saving efficiency and also increase a durability by changing a drop in voltage in succession. SOLUTION: This equipment consists of variable reactors L1 which are serially connected to voltage lines X, Y respectively, a neutral line N, voltage detecting circuits 2 which detect the voltages between the voltage lines and the neutral line, current controlling circuits 3 which are connected to the voltage detecting circuits, and sources of DC 4 which are controlled by the current controlling circuits 3 to output DC exciting currents I1 to the variable reactors L1. The voltage detecting circuits 2 detect the voltage applied to a load and then the current controlling circuits 3 control the currents of the sources of DC 4 and thereby impedances of the variable reactors L1 are changed and then the line voltage is controlled. |
