| 摘要 |
<p>PROBLEM TO BE SOLVED: To respond to a stable AFC signal that matches the needs of a system, by providing a circuit for controlling a converter for excitation and a governor using the control due to a power deviation and that due to speed deviation, and a circuit for switching the command of an automatic frequency adjustment signal to the converter for excitation and the governor. SOLUTION: When the control system of a converter (EX) 6 for excitation is in power feedback, power is increased in response to a voltage-setting equipment 31. On the other hand, in the case of a rotary speed feedback, the rotary speed increases according to optimum function output. When following the AFC signal of an AFC device 68 by combining both, a power command value is given to the EX6. On the other hand, when the system is unstable and the speed is not stable, a power command value is given to the governor 36. The speed command value is switched by switching contacts 71a and 71b. Then, the value can be switched and controlled according to an operational need and a system condition, thus responding to a stable automatic frequency adjustment signal that matches the system need.</p> |
