| 摘要 |
A photovoltaic power generation system and a control method thereof are provided. The photovoltaic power generation system includes a photovoltaic power generation system, a photovoltaic inverter, a bidirectional DC/DC converter, a storage battery and a control device. The photovoltaic inverter performs MPPT control on the photovoltaic power generation device, so that the generation power of the photovoltaic power generation device is maximized (S22). In a case that the generation power of the photovoltaic power generation device is greater than the limited generation power of the power grid, the bidirectional DC/DC converter is controlled to run in the forward direction to charge the storage battery, so that the output power of the photovoltaic inverter is smaller than or equal to the limited generation power of the power grid (S24 and S25). Therefore, the generation power of the photovoltaic power generation system does not need to be limited, which ensures that the photovoltaic power generation system runs at full power, and improves the utilization rate of the system. In a case that the generation power of the photovoltaic power generation device is smaller than the limited generation power of the power grid, the bidirectional DC/DC converter is controlled to run in the reverse direction to discharge the storage battery, so that the total quantity of the electric energy fed into the power grid is increased within the limited generation power of the power grid (S24 and S26). Further, a similar wind power generation system and a control method thereof are provided. |
