Patent ID: 9709021
Date: 2017-07-18
CPC Classifications: F03B,F05B,H02K,H02P,Y02E

Claim:
1. A wave power generator comprising: a buoyant casing intended to float in a body of water; an electric machine located within the casing comprising an armature and a field source, the electric machine having a fixed part coupled to the casing and a moving part; a counterweight assembly that is movable within the casing, comprising the moving part of the electric machine and wherein a relative movement of the counterweight assembly and the fixed part of the electric machine generates electric power; power storage that stores power generated by the electric machine; a control system that determines a bi-directional energy flow between the power storage and the armature, wherein energy is returned to the electric machine to drive a motion of the counterweight assembly anti-symmetrically to a motion of the casing such that the motion of the counterweight assembly is in antiphase with and has the same amplitude as the motion of the casing.