PURPOSE: To obtain a simplified and low-priced further efficient flow and rotary speed control devices, by controlling a rotary speed quite separating from control of a flow control means through adjustment of a variable load separately provided for controlling the rotary speed.
CONSTITUTION: The control method, supplying an amount subtracting a load required for a power system L from the output of a water turbine T to a variable load VR, controls a rotary speed to a fixed value together with the output of the water turbine and the total load. Under this condition, if the load for the power system L decreases, the rotary speed increases, and the method, increasing a load value of the variable load VR in accordance with the increase amount of said rotary speed, controls the rotary speed to a fixed value together with the total load. Reversely, when the power system load increases, the rotary speed decreases, and the method, decreasing the load value of the variable load VR in accordance with the decrease amount of said rotary speed, controls the rotary speed.
OOTA JIRO
MORI CHIHARU
