| 摘要 |
<p>PURPOSE:To improve the responding property of electrical input and mechanical output to load fluctuation, by controlling a servo-circuit for driving a guide vane with the output of a guide vane opening arithmetic controlling circuit, directly. CONSTITUTION:From a rotational speed and guide vane opening arithmetic controlling circuit 23, based on the output of a load setting unit 21 and a head setting unit 22, the output of desired guide vane opening signal GV0 and desired rotational speed signal N0 is generated. The desired guide vane opening signal GV0 is applied to a main servo 18 after the signal is directly applied to an auxiliary servo 17. Besides, by an adder P6, a deviation between the desired rotational frequency signal N0 and actual rotational frequency signal N is applied to a cyclo-converter 6 connected to the secondary side of a dynamotor G/M. Then, the sum of the electrical input PE of output generated from the cyclo-converter 6 and mechanical output PM from a channel system 19 is applied to the generator motor G/M.</p> |
