| 摘要 |
PURPOSE: To provide a system voltage controller which can feed much power under heavy load without having adverse effect on the operational stability of a system. CONSTITUTION: A voltage sustaining circuit 2 sustains the high voltage of a main transformer at a constant level against micro disturbance of power. A decision circuit 4 in a high rate voltage compensation circuit 3 decides whether fluctuation in the high voltage of main transformer is caused by system voltage drop or micro power disturbance. When a decision is made that the fluctuation in the high voltage of main transformer is caused by system voltage drop, a voltage compensation circuit 5 in the high rate voltage compensation circuit 3 operates to increase the system voltage at high rate. |
