公开(公告)号：US20170268477A1

公开(公告)日：2017-09-21

申请号：US15500057

申请日：2015-07-24

Applicant: ALSTOM Renewable Technologies

Inventor： Quentin Alloin ,  Nicolas PERRISSIN-FABERT ,  RENAUD GUILLAUME

IPC: F03B3/18 ,  F03B15/14

Abstract: A method for stabilizing the rotation speed of a machine with S-characteristics is provided. The method includes calculating a target net head and a target opening to affect guide vanes of the machine, the target net head and the target opening being calculated so that the torque exerted by water flow on the turbine is null and that the machine rotates at a target rotation speed; determining a real net head to which the machine is subjected; comparing the target net head with the real net head; and adjusting the opening of the guide vanes so as to converge towards the target opening and reduce a height difference between the target net head and the real net head.