| 摘要 |
PURPOSE:To obtain an exciter of an AC generator which can supply continuous current when the generator is shortcircuited or dropped at its voltage by connecting a DC power source to an exciting current supply circuit to the field coil. CONSTITUTION:The output obtained from a transformer 4 is regulated in response to the load voltage during the load operation of an AC generator 1 by controlling by an automatic voltage regulator 6 a controlled rectifier 5, the regulated output is supplied as an exciting current to the exciting coil 2, and the terminal voltage of the generator 1 is maintained at the rated voltage at the load time. On the other hand. When the generator 1 is shortcircuited, the terminal voltage of the generator 1 becomes zero, the power form the rectifier 5 cannot be obtained. At this time, a contact 10 of an insufficient voltage relay is conducted, and the coil 2 is excited through a current limiting resistor 9 from a storage battery 8, thereby flowing a continuous current. |
