Abstract
Hydraulic systems have been applied as a power take-off device in wave energy converter because the systems have high robustness and controllability under severe load conditions. To maximize power generation, optimization of the combination of pendulum dimensions, hydraulic parts and generator is required under various sea states. Moreover, from the viewpoint of grid connection, maximization of output power and smoothing have to be satisfied simultaneously. In this research, to optimize the pendulum wave energy converter, the power conversion simulation which considered from the wave to the generator rotation was created.