| 摘要 |
PURPOSE:To improve the power factor of a primary power source and obtain more economical power source circuit, by operating the optimum charge current in accordance with a power, supplied from a primary power source to a capacitor bank, and controlling the charge current by employing the value of the optimum charge current. CONSTITUTION:A servomotor 5 is driven through a current control means 2, consisting of a three-phase full-wave rectifier 1 and a transistor, a capacitor bank 3 and an inverter 4. When the acceleration and the deceleration of the rotation of the motor are effected periodically, current is controlled with the optimum power factor with respect to current supply from the rectifier 1 to the capacitor bank 3, which stores temporarily a supply energy from the rectifier 1 and a regenerative energy from the servomotor 5 by a current controller 6. |
