HYDRAULIC SYSTEM, WIND TURBINE GENERATOR, AND METHODS FOR CONTROLLING HYDRAULIC SYSTEM AND WIND TURBINE GENERATOR

摘要

A hydraulic system is provided with a radial piston-type first hydraulic machine mounted on a structure and also with a radial piston-type second hydraulic machine mounted on the structure. Each of the first hydraulic machine and the second hydraulic machine has a rotating shaft, cylinders which are arranged in at least the circumferential direction of the rotating shaft, and pistons which, together with the cylinders, form operating chambers. The phases of the reciprocating movements of the pistons of both the first hydraulic machine and the second hydraulic machine are set so as to suppress the vibration of the structure.