公开(公告)号：US10598145B2

公开(公告)日：2020-03-24

申请号：US15511351

申请日：2015-08-18

Applicant: ALSTOM Renewable Technologies

Inventor： Quentin Alloin ,  Nicolas Perrissin-Fabert ,  Renaud Guillaume

IPC: F03B3/18 ,  F03B3/02 ,  F03B15/06 ,  G01B21/00

Abstract: This method allows determining the operating point of a hydraulic machine in a considered operating range, such as turbine mode, and comprises steps that consist in a) determining two coordinates (N′11, T′11) of a first series of potential operating points of the hydraulic machine for the orientation affected to guide vanes of the machine, b) measuring the rotation speed of the machine, and c) determining the torque exerted by water flow on the machine. The method further includes steps consisting in d) calculating two coordinates (N11, T11) of a second series of potential operating points of the machine in function of the rotation speed (N) measured at step b) and the torque determined at step c), and e) deducing the two coordinates (N11_real, T11_real) of operating point that belongs both to the first and the second series in the said considered operating range of the machine.

公开(公告)号：US10415540B2

公开(公告)日：2019-09-17

申请号：US15532108

申请日：2015-12-01

Applicant: Alstom Renewable Technologies

Inventor： Quentin Alloin ,  Nicolas Perrissin-Fabert ,  Renaud Guillaume

IPC: G06F19/00 ,  F03B15/10 ,  F03B3/02 ,  F03B3/10 ,  F03B15/00 ,  F03B15/08 ,  F03B3/06

Abstract: The method allows stabilizing the rotation speed of a hydraulic machine with S-characteristics. It is implemented by means of a control loop feedback system having a controller for calculating an orientation to affect guide vanes of the machine. It includes steps of calculating a set of internal states associated with the operating point of the machine, establishing a linearized transfer function in function of the set of internal states, calculating characteristics parameters of the controller in function of the established transfer function so that the control loop feedback system is stable, measuring the rotation speed of the hydraulic machine, comparing the measured rotation speed with a target rotation speed, and adjusting the orientation affected to the guide vanes so as to reduce the speed difference between the calculated rotation speed and the target rotation speed.

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.