A wave power apparatus having a float and means for locking the float in a position above the ocean surface

摘要

A wave power apparatus includes at least one arm (122), supported by and mounted on a shaft about which it rotates, and which carries a float (124) at its free end, so that a translational movement of the float caused by a wave results in rotation of the arm. The apparatus comprises energy conversion means for converting energy transmitted from the wave to the arms into electric power, e.g. a hydraulic system, in which a hydraulic medium is displaced by the movement of the arm, the hydraulic system being coupled to an electric generator. The apparatus comprises a hydraulic lifting system for lifting the float out of the ocean and for locking the float in an upper position above the ocean surface, e.g. during extreme sea wave conditions, such as a storm. The lifting system may comprise at least one pump for pumping hydraulic fluid to cylinders for lifting the arm out of the ocean.