Method and system for adjusting mass and torque of a spool rotor in a wave power plant

Abstract

The invention relates to a method and a system for adjusting the mass and the torque of the spool rotor in a wave power plant. The torque of the rotor turning around the vertical axis is partially or completely compensated by the compensating torque generated by the electric machine. Acceleration component (ACC x and ACC y ) are measured in directions perpendicular to each other for a given point of the buoyant body (1) of the wave power plant. Establish the acceleration component with magnitude (A) and direction (α ACC ) vector (V xy ), monitor the orientation or angular position (α) of the rotor (2) and determine its direction from the acceleration vector (α ACC ) lag (α LAG ). According to its subfactor is the acceleration vector of the body (V xy ) and the sine of the lag angle (sinα LAG ) to adjust the compensation torque by the compensation factor (B). This is supplemented with a compensation factor based on the spin wheel force in an otherwise similar manner, except that the acceleration must be replaced by the rotational velocity (AVx-y) of the body tilt obtained from the inertial sensor 821) and must be replaced by The wheel's inertia and rotational velocity are similar except for the gyroscopic force instead of mass.

Description

technical field [0001] The invention relates to a method and a system for adjusting a rotor of a wave power plant with respect to torque. The torque of the rotor rotating about a vertical axis is partially or completely compensated by the torque generated by the electric machine. Background technique [0002] The applicant's earlier international patent application WO 2013 / 156674 A2 discloses a coordinated solution for optimizing the inclination and moment of the buoy. There, buoys are shaped as vertical or sloping walls to be submerged deep enough underwater. By utilizing the internal flow of the waves, a phase in the inclination of the buoyant body is created which can also utilize the moment caused by the horizontal acceleration. This is not possible with buoys that float in a manner that conforms to the direction of the wave surface. The moments generated by tilt and acceleration are now summed up as dead mass torque. In the case of a spinning wheel, the torque gener...

AI Technical Summary

Problems solved by technology

However, the torque to be compensated fluctuates nonlinearly and in unpredictable ways

This makes compensation adjustments challenging, and adjustment equipment complex and expensive

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