Control system, method and program, and floating wind turbine generator provided therewith

A control system of a floating wind turbine generator, the floating wind turbine generator comprising a pitch angle control section adapted to drive a plurality of wind turbine blades to control a pitch angle of each of the wind turbine blades, and having a tilt angle, which is an angle between a horizontal plane and a main shaft, wherein

• the control system controls the pitch angle control section according to a pitch angle instruction value for controlling the pitch angle of each of the wind turbine blades so as to keep a signal indicating an angle within a predetermined range, the signal being detected by a fourth sensor for detecting a turbine pitch angle, which is an angle between a vertical axis of the horizontal plane and a tower provided with a nacelle at the upper end of the tower, the nacelle being provided with a rotor head that rotates by the wind turbine blades receiving wind power.

A control program for a floating wind turbine generator, the floating wind turbine generator comprising:

• a yaw driving device adapted to cause a nacelle to perform turning in a yaw direction relative to a tower provided with the nacelle at the upper end thereof, the nacelle being provided with a rotor head that rotates by a plurality of wind turbine blades receiving wind power;
• and a pitch angle control section adapted to drive the wind turbine blades to control a pitch angle thereof, wherein
• the control program controls the pitch angle control section according to a pitch angle instruction value calculated on the basis of a signal detected by a second sensor for detecting a relative angle between the nacelle and the tower and a signal detected by a third sensor for detecting a yaw angle from a reference position of the tower so as to keep a signal indicating an angle within a predetermined range relative to a vertical direction of a rotation plane of the wind turbine blades, the signal being detected by a first sensor for detecting a wind direction deviation relative to the vertical direction of the rotation plane of the wind turbine blades, and controls the yaw driving device according to a yaw driving instruction value calculated on the basis of the signals detected by the second sensor and the third sensor.

A control method for a floating wind turbine generator, the floating wind turbine generator comprising a pitch angle control section adapted to drive a plurality of wind turbine blades to control a pitch angle of each of the wind turbine blades, and having a tilt angle, which is an angle between a horizontal plane and a main shaft, the control method comprising:

• controlling the pitch angle control section according to a pitch angle instruction value for controlling the pitch angle of each of the wind turbine blades so as to keep a signal indicating an angle within a predetermined range, the signal being detected by a fourth sensor for detecting a turbine pitch angle, which is an angle between a vertical axis of the horizontal plane and a tower provided with a nacelle at the upper end of the tower, the nacelle being provided with a rotor head that rotates by the wind turbine blades receiving wind power.

A control program for a floating wind turbine generator, the floating wind turbine generator comprising a pitch angle control section adapted to drive a plurality of wind turbine blades to control a pitch angle of each of the wind turbine blades, and having a tilt angle, which is an angle between a horizontal plane and a main shaft, wherein

• the control program controls the pitch angle control section according to a pitch angle instruction value for controlling the pitch angle of each of the wind turbine blades so as to keep a signal indicating an angle within a predetermined range, the signal being detected by a fourth sensor for detecting a turbine pitch angle, which is an angle between a vertical axis of the horizontal plane and a tower provided with a nacelle at the upper end of the tower, the nacelle being provided with a rotor head that rotates by the wind turbine blades receiving wind power.