Abstract: A power generating apparatus of renewable energy type includes a rotating shaft rotated by the renewable energy received via a blade, a hydraulic pump driven by the rotating shaft to generate pressurized oil, hydraulic motors driven by the pressurized oil, and synchronous generators connected to a grid without an intervening frequency-conversion circuit and respectively coupled to the hydraulic motors. The displacements of the hydraulic motors are adjusted independently by a motor control unit. A synchronizer supplies a command value of the displacement of each hydraulic motor to the motor control unit so that before the synchronous generators are connected to the grid, a frequency and a phase of a terminal voltage of each synchronous generator are synchronized with the grid.