公开(公告)号：US20180252198A1

公开(公告)日：2018-09-06

申请号：US15759885

申请日：2016-09-09

Applicant: ALSTOM Renewable Technologies

Inventor： Renaud GUILLAUME ,  Pierre Yves LOWYS ,  Arnaud LEGRAND ,  Philippe GIRIN

IPC: F03B3/10 ,  F03B11/00 ,  F03B3/02 ,  F03B11/02 ,  F03B3/18

CPC classification number: F03B3/106 ,  F03B3/02 ,  F03B3/183 ,  F03B11/002 ,  F03B11/02 ,  F05B2270/301 ,  Y02E10/223 ,  Y02E10/226

Abstract: The present invention generally relates to hydraulic machinery, such as hydraulic turbines. More specifically, the invention is directed to optimizing power consumption when the turbine is used in condenser mode. The present invention provides a novel hydraulic installation where the reduction of pressure in the spiral case during condenser mode operations is more efficient, limiting the power consumption if compared to state-of-the-art installations.

公开(公告)号：US20170268478A1

公开(公告)日：2017-09-21

申请号：US15532108

申请日：2015-12-01

Applicant: Alstom Renewable Technologies

Inventor： Quentin ALLOIN ,  Nicolas PERRISSIN-FABERT ,  Renaud GUILLAUME

IPC: F03B15/10 ,  F03B3/10 ,  F03B3/06 ,  F03B3/02

CPC classification number: F03B15/10 ,  F03B3/02 ,  F03B3/06 ,  F03B3/103 ,  F03B15/005 ,  F03B15/08 ,  F05B2270/101 ,  F05B2270/1014 ,  F05B2270/706 ,  Y02E10/223 ,  Y02E10/226

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：US20170254313A1

公开(公告)日：2017-09-07

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 ,  F03B15/06 ,  G01B21/00 ,  F03B3/02

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.