ELECTRICITY GENERATION SYSTEM AND WIND-POWERED ELECTRICITY GENERATION SYSTEM

摘要

The present invention provides a wind-powered electricity generation system with which a generator and an electrical grid can be linked in a stable manner even when the wind speed is low, and with which the operational range of the electricity generation system when the wind speed is low can be expanded, thereby improving the utilization ratio for an electricity generation facility. This wind-powered electricity generation system is characterized by being equipped with a wind-powered generator, which is driven by a windmill that rotates when wind is received, and multiple power conversion devices, one end of each of which is connected to the wind-powered generator, and the other end of each of which is connected to an electrical grid, and which have a power storage device, with the stator of the wind-powered generator and the multiple power conversion devices being connected in series, and when a difference in voltage occurs between the wind-powered generator and the electrical grid the power conversion devices are controlled, thereby charging or discharging the power storage devices and decreasing or increasing the output voltage to the electrical grid from the power conversion devices so as to eliminate the difference in voltage.